

  <!--mss_data={"linklists":[{"handle":"main-menu","title":"Main Menu","links":[{"url":"/pages/about-blue-light","title":"About blue light","type":"page_link","active":false},{"url":"/collections/all","title":"Anti-Blue Light Screen Protectors","type":"catalog_link","active":false},{"url":"/pages/anti-blue-light-tempered-glass-screen-protector","title":"Tempered Glass Screen Protectors","type":"page_link","active":false},{"url":"/collections/anti-glare-ant-blue-light-screen-protectors","title":"ANTI-GLARE + ANT-BLUE LIGHT","type":"collection_link","active":false},{"url":"/blogs/news","title":"Blog","type":"blog_link","active":true},{"url":"/pages/instruction","title":"Instructions","type":"page_link","active":false}]},{"handle":"footer","title":"Footer","links":[{"url":"/search","title":"Search","type":"search_link","active":false},{"url":"/pages/about-us","title":"About Us","type":"page_link","active":false},{"url":"/pages/customer-service","title":"Customer Service","type":"page_link","active":false},{"url":"/pages/track-order-status","title":"Track Order Status","type":"page_link","active":false},{"url":"/pages/contact-us","title":"Contact us","type":"page_link","active":false}]},{"handle":"iphones","title":"Main menu>ANTI-BLUE LIGHT SCREEN PROTECTORS>iPhones","links":[{"url":"/collections/pet-iphone-12-mini-12-12-pro-12-pro-max","title":"iPhone 12 ‧ 12 mini ‧ 12 Pro ‧ 12 Pro Max","type":"collection_link","active":false},{"url":"/collections/pet-iphone-x-xr-xs-xs-max-1","title":"iPhone 11 ‧ 11Pro ‧ 11 Pro Max","type":"collection_link","active":false},{"url":"/collections/pet-iphone-x-xr-xs-xs-max","title":"iPhone X ‧ XR ‧ Xs ‧ Xs Max","type":"collection_link","active":false},{"url":"/collections/pet-iphone-8-8-plus","title":"iPhone SE ‧ 2020 iPhone 8 ‧ 8 Plus","type":"collection_link","active":false},{"url":"/collections/nintendo-switch","title":"Nintendo Switch","type":"collection_link","active":false}]},{"handle":"ipads","title":"iPads","links":[{"url":"/collections/pet-2021-ipad-pro","title":"2021 iPad Pro","type":"collection_link","active":false},{"url":"/collections/pet-2020-ipad-air-4","title":"2020 iPad Air 4","type":"collection_link","active":false},{"url":"/collections/ipad-pro","title":"2020 iPad Pro ‧ 2018 iPad Pro ","type":"collection_link","active":false},{"url":"/collections/ipad-air","title":"2019 iPad Air 3 ‧ Air 2 ‧ Air ","type":"collection_link","active":false},{"url":"/collections/2019-ipad","title":"2020 iPad 8th Gen ‧ 2019 iPad 7th Gen","type":"collection_link","active":false},{"url":"/products/anti-blue-light-screen-protector-black-border","title":"2019 iPad mini 5 / iPad mini 4","type":"product_link","active":false},{"url":"/collections/ipad-mini-retina","title":"iPad mini ‧ mini 2 ‧ mini 3","type":"collection_link","active":false},{"url":"/collections/ipad-4-new-ipad","title":"iPad 4 ‧ New iPad","type":"collection_link","active":false}]},{"handle":"macbooks","title":"Main menu>ANTI-BLUE LIGHT SCREEN PROTECTORS>MacBooks","links":[{"url":"/collections/macbook-pro-15-13","title":"Macbook Pro","type":"collection_link","active":false},{"url":"/collections/macbook-air","title":"Macbook Air","type":"collection_link","active":false}]},{"handle":"about-blue-light","title":"About blue light","links":[{"url":"/pages/over-view","title":"Overview","type":"page_link","active":false},{"url":"/pages/insomnia","title":"Insomnia","type":"page_link","active":false},{"url":"/pages/vision-loss","title":"Vision Loss","type":"page_link","active":false},{"url":"/pages/children-elderly","title":"Children & Elderly","type":"page_link","active":false},{"url":"/pages/present-media","title":"Press & Media","type":"page_link","active":false}]},{"handle":"tempered-glass-screen-protectors","title":"Tempered Glass Screen Protectors","links":[{"url":"https://retinaguard.com/collections/current-models/products/anti-blue-light-tempered-glass-screen-protectors-for-iphone-15","title":"iPhone 15‧ 15 Plus ‧ 15 Pro ‧ 15 Pro Max","type":"http_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-iphone-14-14-plus-14-pro-14-pro-max","title":"iPhone 14 ‧ 14 Plus ‧ 14 Pro ‧ 14 Pro Max","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-iphone-13-13-mini-13-pro-13-pro-max","title":"iPhone 13 ‧ 13 mini ‧ 13 Pro ‧ 13 Pro Max","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-iphone-12-12-mini-12-pro-12-pro-max","title":"iPhone 12 ‧ 12 mini ‧ 12 Pro ‧ 12 Pro Max","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max","title":"iPhone 11 ‧ 11 Pro ‧ 11 Pro Max","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-iphone-x-xr-xs-xs-max","title":"iPhone X ‧ XR ‧ Xs ‧ Xs Max","type":"collection_link","active":false},{"url":"/collections/iphone-8-iphone-8-plus-iphone-x","title":"iPhone SE 2020 ‧ iPhone 8 ‧ 8 Plus","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-pro","title":"iPad Pro","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-air","title":"iPad Air","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-mini","title":"iPad mini","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad","title":"iPad","type":"collection_link","active":false}]},{"handle":"vehicles","title":"Vehicles","links":[{"url":"/collections/vehicles","title":"Windshield","type":"collection_link","active":false}]},{"handle":"apple","title":"apple","links":[{"url":"#","title":"iPhones","type":"http_link","active":false},{"url":"#","title":"iPads","type":"http_link","active":false},{"url":"#","title":"Macbooks","type":"http_link","active":false}]},{"handle":"anti-blue-light-screen-protectors","title":"Main menu>ANTI-BLUE LIGHT SCREEN PROTECTORS","links":[{"url":"#","title":"iPads","type":"http_link","active":false},{"url":"#","title":"iPhones","type":"http_link","active":false},{"url":"#","title":"Macbooks","type":"http_link","active":false},{"url":"/collections/anti-blue-light-screen-protector-for-pc","title":"PC","type":"collection_link","active":false}]},{"handle":"customer-account-main-menu","title":"Customer account main menu","links":[{"url":"/","title":"Shop","type":"frontpage_link","active":false},{"url":"https://shopify.com/6820971/account/orders?locale=en&region_country=US","title":"Orders","type":"customer_account_page_link","active":false}]}]}-->

  <script>
    var mss_page = "article";
    
    mss_selected_locale = "en";
  </script>
<!doctype html>
<!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7" lang="en"> <![endif]-->
<!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8" lang="en"> <![endif]-->
<!--[if IE 8]> <html class="no-js lt-ie9" lang="en"> <![endif]-->
<!--[if IE 9]> <html class="ie9 no-js"> <![endif]-->
<!--[if (gt IE 9)|!(IE)]><!--> <html class="no-js"> <!--<![endif]-->

<head>


 <!-- SEO Manager 5.0.3 -->
<meta name='seomanager' content='5.0' />
<title>What is Blue Light?</title>
<meta name='description' content='What is Blue Light? As laptops, tablets and smartphones have become more and more integrated into our daily lives, it makes sense to be aware of any potential negative effects they might have on our health. You’ve likely heard the term ‘blue light’ being bandied about, with suggestions it contributes to all kinds of na' /> 
<meta name="robots" content="index"> 
<meta name="robots" content="follow">
<script type="application/ld+json">
	{
		"@context": "https://schema.org",
		"@type": "Article",
		"url": "https:\/\/retinaguard.com\/blogs\/news\/what-is-blue-light",
		"mainEntityOfPage": "https:\/\/retinaguard.com\/blogs\/news\/what-is-blue-light",
		"name": "What is Blue Light?",
		"headline": "What is Blue Light?",
		"author": {
			"@type": "Person",
			"name": "Heidi Green"
		},
		"publisher": {
			"@type": "Organization",
			"name": "RetinaGuard Store "
,"logo":
				{
					"@type": "ImageObject",
					"url": "https://customers.seometamanager.com/knowledgegraph/logo/retinaguard-store_myshopify_com_logo.png"
				}},
		"image": {
			"@type": "ImageObject","url": "https://cdn.shopify.com/s/images/admin/no-image-grande.gif","height": "1024",
					"width": "1024"
				},
				"datePublished": "2019-10-03 11:28:28 +0800",
				"dateModified": "2019-10-03 11:28:00 +0800",
				"description": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nWhat is Blue Light?\n\n\nAs laptops, tablets and smartphones have become more and more integrated into our daily lives, it makes sense to be aware of any potential negative effects they might have on our health. You’ve likely heard the term ‘blue light’ being bandied about, with suggestions it contributes to all kinds of nasties; from headaches and eye strain to straight-up insomnia. But - we hear you ask - what exactly is blue light, and how is it connected to our use of digital devices? Say no more, as we’ve got the lowdown…\n\nThe Light Spectrum\nTo understand blue light and its various effects, we need to take a look at the bigger picture, also known as the ‘electromagnetic spectrum’. When you step outside into sunshine (rare enough in Ireland, we know), you’re actually basking in a whole host of electromagnetic particles, all of which travel in waves. Some of these waves are visible to the human eye, others - like the ultra-violet or UV rays that tan or burn our skin - aren’t. These waves also vary in terms of their length and strength, as well as how much energy they emit, with shorter wavelengths emitting higher energy. The electromagnetic spectrum is made up of red, orange, yellow, green and blue light, with blue being both visible to the human eye and emitting a high amount of energy. Therefore it’s known as HEV (high-energy visible) light..... READ MOREMore information from ambreyewear-\n\nRetinaGuard Anti Blue Light Tempered Glass Screen Protectors :\n\niPhone XS \/ iPhone XS MAX \/ iPhone XR \/ iPhone X\niPhone 8 \/ iPhone 8 plus\niPhone 7 \/ iPhone 7 plus\niPhone 6 \/ iPhone 6 plus\niPad pro．iPad air． iPad mini\nMacbook Pro．Macbook Air．iMac\nSAMSUNG．HTC．SONY．ASUS．LG．Xiaomi．VEHICLES\n \n\n\n\n\n\n\n",
				"articleBody": "\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\nWhat is Blue Light?\n\n\nAs laptops, tablets and smartphones have become more and more integrated into our daily lives, it makes sense to be aware of any potential negative effects they might have on our health. You’ve likely heard the term ‘blue light’ being bandied about, with suggestions it contributes to all kinds of nasties; from headaches and eye strain to straight-up insomnia. But - we hear you ask - what exactly is blue light, and how is it connected to our use of digital devices? Say no more, as we’ve got the lowdown…\n\nThe Light Spectrum\nTo understand blue light and its various effects, we need to take a look at the bigger picture, also known as the ‘electromagnetic spectrum’. When you step outside into sunshine (rare enough in Ireland, we know), you’re actually basking in a whole host of electromagnetic particles, all of which travel in waves. Some of these waves are visible to the human eye, others - like the ultra-violet or UV rays that tan or burn our skin - aren’t. These waves also vary in terms of their length and strength, as well as how much energy they emit, with shorter wavelengths emitting higher energy. The electromagnetic spectrum is made up of red, orange, yellow, green and blue light, with blue being both visible to the human eye and emitting a high amount of energy. Therefore it’s known as HEV (high-energy visible) light..... READ MOREMore information from ambreyewear-\n\nRetinaGuard Anti Blue Light Tempered Glass Screen Protectors :\n\niPhone XS \/ iPhone XS MAX \/ iPhone XR \/ iPhone X\niPhone 8 \/ iPhone 8 plus\niPhone 7 \/ iPhone 7 plus\niPhone 6 \/ iPhone 6 plus\niPad pro．iPad air． iPad mini\nMacbook Pro．Macbook Air．iMac\nSAMSUNG．HTC．SONY．ASUS．LG．Xiaomi．VEHICLES\n \n\n\n\n\n\n\n"
			}
			</script>
<!-- end: SEO Manager 5.0.3 -->


  <!-- Blockshop Theme Version 2.0.4 by Troop Digital - http://troop.ws/ -->
<meta name="google-site-verification" content="gFRlzRmVVuQnyZX3TeoLZW7-A09jD_MMgIhWT8hfw8s" />
  <meta charset="UTF-8" />
  <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
  
    <link rel="shortcut icon" type="image/png" href="//retinaguard.com/cdn/shop/t/37/assets/favicon.png?v=104525246853095018321421635180" />
  

  <link rel="canonical" href="https://retinaguard.com/blogs/news/what-is-blue-light" />
  
  
  <meta property="og:url" content="https://retinaguard.com/blogs/news/what-is-blue-light" />
  <meta property="og:title" content="What is Blue Light?" />
  <meta property="og:description" content="&quot;&gt; &quot;&gt; featured_collections clearfix across-1 image-align--right&quot;&gt; What is Blue Light? As laptops, tablets and smartphones have become more and more integrated into our daily lives, it makes sense to be aware of any potential negative effects they might have on our health. You’ve likely heard the term ‘blue light’ being bandied about, with suggestions it contributes to all kinds of nasties; from headaches and eye strain to straight-up insomnia. But - we hear you ask - what exactly is blue light, and how is it connected to our use of digital devices? Say no more, as we’ve got the lowdown…" />
  

<script>
  WebFontConfig = {
    
    
    google: { families: ['Open Sans:400,700', 'Droid Serif:400,700', ] }
    
  };
</script>
<script src="//ajax.googleapis.com/ajax/libs/webfont/1.4.7/webfont.js"></script>


  <script>window.performance && window.performance.mark && window.performance.mark('shopify.content_for_header.start');</script><meta id="shopify-digital-wallet" name="shopify-digital-wallet" content="/6820971/digital_wallets/dialog">
<meta name="shopify-checkout-api-token" content="50f88d83e2baa36684d9ffa123f961e5">
<meta id="in-context-paypal-metadata" data-shop-id="6820971" data-venmo-supported="false" data-environment="production" data-locale="en_US" data-paypal-v4="true" data-currency="USD">
<link rel="alternate" type="application/atom+xml" title="Feed" href="/blogs/news.atom" />
<script async="async" src="/checkouts/internal/preloads.js?locale=en-US"></script>
<script id="shopify-features" type="application/json">{"accessToken":"50f88d83e2baa36684d9ffa123f961e5","betas":["rich-media-storefront-analytics"],"domain":"retinaguard.com","predictiveSearch":true,"shopId":6820971,"smart_payment_buttons_url":"https:\/\/retinaguard.com\/cdn\/shopifycloud\/payment-sheet\/assets\/latest\/spb.en.js","dynamic_checkout_cart_url":"https:\/\/retinaguard.com\/cdn\/shopifycloud\/payment-sheet\/assets\/latest\/dynamic-checkout-cart.en.js","locale":"en"}</script>
<script>var Shopify = Shopify || {};
Shopify.shop = "retinaguard-store.myshopify.com";
Shopify.locale = "en";
Shopify.currency = {"active":"USD","rate":"1.0"};
Shopify.country = "US";
Shopify.theme = {"name":"Blockshop","id":12322459,"schema_name":null,"schema_version":null,"theme_store_id":null,"role":"main"};
Shopify.theme.handle = "null";
Shopify.theme.style = {"id":null,"handle":null};
Shopify.cdnHost = "retinaguard.com/cdn";
Shopify.routes = Shopify.routes || {};
Shopify.routes.root = "/";</script>
<script type="module">!function(o){(o.Shopify=o.Shopify||{}).modules=!0}(window);</script>
<script>!function(o){function n(){var o=[];function n(){o.push(Array.prototype.slice.apply(arguments))}return n.q=o,n}var t=o.Shopify=o.Shopify||{};t.loadFeatures=n(),t.autoloadFeatures=n()}(window);</script>
<script id="shop-js-analytics" type="application/json">{"pageType":"article"}</script>
<script>(function() {
  function asyncLoad() {
    var urls = ["\/\/www.powr.io\/powr.js?powr-token=retinaguard-store.myshopify.com\u0026external-type=shopify\u0026shop=retinaguard-store.myshopify.com","https:\/\/cdn-loyalty.yotpo.com\/loader\/u_ayi6tQrE-ZA7o_lOIkyA.js?shop=retinaguard-store.myshopify.com","https:\/\/www.improvedcontactform.com\/icf.js?shop=retinaguard-store.myshopify.com","\/\/open-signin.okasconcepts.com\/js\/resource.js?shop=retinaguard-store.myshopify.com","https:\/\/cdn.refersion.com\/pixel.js?shop=retinaguard-store.myshopify.com\u0026client_id=6314\u0026pk=pub_5303a2ad02502ad715cf\u0026shop=retinaguard-store.myshopify.com","https:\/\/cdn.hextom.com\/js\/quickannouncementbar.js?shop=retinaguard-store.myshopify.com","https:\/\/cdn.hextom.com\/js\/freeshippingbar.js?shop=retinaguard-store.myshopify.com"];
    for (var i = 0; i < urls.length; i++) {
      var s = document.createElement('script');
      s.type = 'text/javascript';
      s.async = true;
      s.src = urls[i];
      var x = document.getElementsByTagName('script')[0];
      x.parentNode.insertBefore(s, x);
    }
  };
  if(window.attachEvent) {
    window.attachEvent('onload', asyncLoad);
  } else {
    window.addEventListener('load', asyncLoad, false);
  }
})();</script>
<script id="__st">var __st={"a":6820971,"offset":28800,"reqid":"9f222fe7-1399-43c5-b8e7-9e4c55326812-1735252298","pageurl":"retinaguard.com\/blogs\/news\/what-is-blue-light","s":"articles-35766501463","u":"f0cf99925dce","p":"article","rtyp":"article","rid":35766501463};</script>
<script>window.ShopifyPaypalV4VisibilityTracking = true;</script>
<script id="captcha-bootstrap">!function(){'use strict';const t='contact',e='account',n='new_comment',o=[[t,t],['blogs',n],['comments',n],[t,'customer']],c=[[e,'customer_login'],[e,'guest_login'],[e,'recover_customer_password'],[e,'create_customer']],r=t=>t.map((([t,e])=>`form[action*='/${t}']:not([data-nocaptcha='true']) input[name='form_type'][value='${e}']`)).join(','),a=t=>()=>t?[...document.querySelectorAll(t)].map((t=>t.form)):[];function s(){const t=[...o],e=r(t);return a(e)}function i(t,e,n=!1){try{const o=window.sessionStorage,c=JSON.parse(o.getItem(e)),{data:r}=c.action?c:{data:c};for(const[e,n]of Object.entries(r))t.elements[e]&&(t.elements[e].value=n);n&&o.removeItem(e)}catch{}}const u='password',m='form_key',f=['recaptcha-v3-token','g-recaptcha-response','h-captcha-response',u],d=()=>{try{return window.sessionStorage}catch{return}},p=t=>t.elements[m],l='form_type',h='cptcha';function _(t){t.dataset[h]=!0}const y=window,E=y.document,v='Shopify',g='ce_forms',T='captcha';let S=!1;((t,e)=>{const n=(w='f06e6c50-85a8-45c8-87d0-21a2b65856fe','https://cdn.shopify.com/shopifycloud/storefront-forms-hcaptcha/ce_storefront_forms_captcha_hcaptcha.v1.5.0.iife.js',A={infoText:'Protected by hCaptcha',privacyText:'Privacy',termsText:'Terms'},(t,e,n)=>{const o=y[v][g],c=o.bindForm;if(c)return c(t,w,e,A).then(n);o.q.push([[t,w,e,A],n]),S||(E.body.append(Object.assign(E.createElement('script'),{id:'captcha-provider',async:!0,src:'https://cdn.shopify.com/shopifycloud/storefront-forms-hcaptcha/ce_storefront_forms_captcha_hcaptcha.v1.5.0.iife.js'})),S=!0)});var w,A;y[v]=y[v]||{},y[v][g]=y[v][g]||{},y[v][g].q=[],y[v][T]=y[v][T]||{},y[v][T].protect=function(t,e){n(t,void 0,e),_(t)},Object.freeze(y[v][T]),function(t,e,n,y,E,v){const[g,T,S,w]=function(t,e,n){const i=e?o:[],u=t?c:[],m=[...i,...u],f=r(m),d=r(i),p=n&&r(m.filter((([t,e])=>n.includes(e))));return[a(f),a(d),a(p),s()]}(y,E,v),A=t=>{const e=t.target;return e instanceof HTMLFormElement?e:e&&e.form},b=t=>g().includes(t);t.addEventListener('submit',(t=>{const e=A(t);if(!e)return;const n=b(e)&&!e.dataset.hcaptchaBound&&!e.dataset.recaptchaBound,o=p(e),c=w().includes(e)&&(!o||!o.value);(n||c)&&t.preventDefault(),c&&!n&&(function(t){try{if(!d())return;!function(t){const e=d();if(!e)return;const n=p(t);if(!n)return;const o=n.value;o&&e.removeItem(o)}(t);const e=Array.from(Array(32),(()=>Math.random().toString(36)[2])).join('');!function(t,e){p(t)||t.append(Object.assign(document.createElement('input'),{type:'hidden',name:m})),t.elements[m].value=e}(t,e),function(t,e){const n=d();if(!n)return;const o=[...t.querySelectorAll(`input[type='${u}']`)].map((({name:t})=>t)),c=[...f,...o],r={};for(const[a,s]of new FormData(t).entries())c.includes(a)||(r[a]=s);n.setItem(e,JSON.stringify({action:t.action,data:r}))}(t,e)}catch(e){console.error('failed to persist form',e)}}(e),e.submit())}));const I=(t,e)=>{t&&!t.dataset[h]&&(n(t,e.some((e=>e===t))),_(t))};for(const o of['focusin','change'])t.addEventListener(o,(t=>{const e=A(t);b(e)&&I(e,T())}));const O=e.get('form_key'),R=e.get(l),L=O&&R;t.addEventListener('DOMContentLoaded',(()=>{const t=T();if(L)for(const e of t)e.elements[l].value===R&&i(e,O);[...new Set([...S(),...g().filter((t=>'true'===t.dataset.shopifyCaptcha))])].forEach((e=>I(e,t)))}))}(E,new URLSearchParams(y.location.search),n,!0,!0,['guest_login'])})()}();</script>
<script integrity="sha256-EGCDRYTvIEOXsReXgqGwkAR+5Dl8tickSrieA/ZcQwc=" data-source-attribution="shopify.loadfeatures" defer="defer" src="//retinaguard.com/cdn/shopifycloud/shopify/assets/storefront/load_feature-1060834584ef204397b1179782a1b090047ee4397cb627244ab89e03f65c4307.js" crossorigin="anonymous"></script>
<script data-source-attribution="shopify.dynamic_checkout.dynamic.init">var Shopify=Shopify||{};Shopify.PaymentButton=Shopify.PaymentButton||{isStorefrontPortableWallets:!0,init:function(){window.Shopify.PaymentButton.init=function(){};var t=document.createElement("script");t.src="https://retinaguard.com/cdn/shopifycloud/portable-wallets/latest/portable-wallets.en.js",t.type="module",document.head.appendChild(t)}};
</script>
<script data-source-attribution="shopify.dynamic_checkout.buyer_consent">
  function portableWalletsHideBuyerConsent(e){var t=document.getElementById("shopify-buyer-consent"),n=document.getElementById("shopify-subscription-policy-button");t&&n&&(t.classList.add("hidden"),t.setAttribute("aria-hidden","true"),n.removeEventListener("click",e))}function portableWalletsShowBuyerConsent(e){var t=document.getElementById("shopify-buyer-consent"),n=document.getElementById("shopify-subscription-policy-button");t&&n&&(t.classList.remove("hidden"),t.removeAttribute("aria-hidden"),n.addEventListener("click",e))}window.Shopify?.PaymentButton&&(window.Shopify.PaymentButton.hideBuyerConsent=portableWalletsHideBuyerConsent,window.Shopify.PaymentButton.showBuyerConsent=portableWalletsShowBuyerConsent);
</script>
<script data-source-attribution="shopify.dynamic_checkout.cart.bootstrap">document.addEventListener("DOMContentLoaded",(function(){function t(){return document.querySelector("shopify-accelerated-checkout-cart, shopify-accelerated-checkout")}if(t())Shopify.PaymentButton.init();else{new MutationObserver((function(e,n){t()&&(Shopify.PaymentButton.init(),n.disconnect())})).observe(document.body,{childList:!0,subtree:!0})}}));
</script>


<style id="shopify-accelerated-checkout-cart">
        #dynamic-checkout-cart {
  container-type: inline-size;
  container-name: dcc;
  width: 100%;
}

.wallet-cart-grid {
  --wallet-button-height-horizontal: clamp(
    25px,
    var(
      --shopify-accelerated-checkout-button-inline-size,
      42px
    ),
    55px
  );
  --wallet-button-height-vertical: clamp(
    25px,
    var(
      --shopify-accelerated-checkout-button-block-size,
      54px
    ),
    55px
  );
  --wallet-button-width-horizontal: 150px;
  --wallet-button-width-vertical: 100%;
  --wallet-button-border-radius: var(
    --shopify-accelerated-checkout-button-border-radius,
    4px
  );
  --wallet-grid-margin-horizontal: 0 -5px -5px -5px;
  --wallet-button-container-margin-horizontal: 0 5px 5px;
  --wallet-button-container-margin-vertical: var(--shopify-accelerated-checkout-row-gap, 8px) 0 0;
}

@keyframes acceleratedCheckoutLoadingSkeleton {
  50% {opacity: var(--shopify-accelerated-checkout-skeleton-animation-opacity-start, 1);}
  75% {opacity: var(--shopify-accelerated-checkout-skeleton-animation-opacity-end, 0.5);}
  100% {opacity: var(--shopify-accelerated-checkout-skeleton-animation-opacity-start, 1);}
}

.wallet-cart-button__skeleton {
  animation: acceleratedCheckoutLoadingSkeleton var(--shopify-accelerated-checkout-skeleton-animation-duration, 4s) var(--shopify-accelerated-checkout-skeleton-animation-timing-function, ease) infinite;
  animation-delay: -0.168s;
  background-color: var(--shopify-accelerated-checkout-skeleton-background-color, #dedede);
  box-sizing: border-box;
  text-decoration: none !important;
}

.wallet-cart-grid {
  margin: var(--wallet-grid-margin-horizontal);
  padding: 0;
  display: flex;
  flex-direction: row;
  justify-content: var(--shopify-accelerated-checkout-inline-alignment, start);
  gap: 0 !important;
}

.wallet-cart-grid--skeleton {
  justify-content: var(--shopify-accelerated-checkout-inline-alignment, inherit);
}

.wallet-cart-button-container {
  position: relative;
  margin: var(--wallet-button-container-margin-horizontal);
}

.wallet-cart-button-container,
.wallet-cart-button {
  width: var(--wallet-button-width-horizontal);
  height: var(--wallet-button-height-horizontal);
  border-radius: var(--wallet-button-border-radius);
  list-style-type: none !important;
  text-align: center;
  flex-shrink: 0;
  flex-grow: 0;
}

.additional-checkout-buttons--vertical .wallet-cart-grid {
  justify-content: start;
  flex-direction: column;
  margin: 0;
}
.additional-checkout-buttons--vertical .wallet-cart-grid .wallet-cart-button-container {
  width: var(--wallet-button-width-vertical);
  height: var(--wallet-button-height-vertical);
  margin: var(--wallet-button-container-margin-vertical);
}
.additional-checkout-buttons--vertical .wallet-cart-grid .wallet-cart-button-container:first-child {
  margin-top: 0;
}
.additional-checkout-buttons--vertical .wallet-cart-grid .wallet-cart-button {
  width: var(--wallet-button-width-vertical);
  height: var(--wallet-button-height-vertical);
}

.additional-checkout-buttons--horizontal .wallet-cart-grid .wallet-cart-button-container,
.additional-checkout-buttons--horizontal .wallet-cart-grid .wallet-cart-button {
  width: var(--wallet-button-width-horizontal) !important;
  height: var(--wallet-button-height-horizontal) !important;
  border-radius: var(--wallet-button-border-radius) !important;
}

@container dcc (width >= 150px) and (width <= 500px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(1)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(2))) {
    justify-content: start;
    flex-direction: column;
    margin: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(1)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(2))) .wallet-cart-button-container {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
    margin: var(--wallet-button-container-margin-vertical);
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(1)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(2))) .wallet-cart-button-container:first-child {
    margin-top: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(1)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(2))) .wallet-cart-button {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
  }
}

@container dcc (width <= 310px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(2)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(3))) {
    justify-content: start;
    flex-direction: column;
    margin: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(2)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(3))) .wallet-cart-button-container {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
    margin: var(--wallet-button-container-margin-vertical);
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(2)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(3))) .wallet-cart-button-container:first-child {
    margin-top: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(2)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(3))) .wallet-cart-button {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
  }
}

@container dcc (width <= 470px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(3)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(4))) {
    justify-content: start;
    flex-direction: column;
    margin: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(3)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(4))) .wallet-cart-button-container {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
    margin: var(--wallet-button-container-margin-vertical);
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(3)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(4))) .wallet-cart-button-container:first-child {
    margin-top: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(3)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(4))) .wallet-cart-button {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
  }
}

@container dcc (width <= 630px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(4)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(5))) {
    justify-content: start;
    flex-direction: column;
    margin: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(4)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(5))) .wallet-cart-button-container {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
    margin: var(--wallet-button-container-margin-vertical);
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(4)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(5))) .wallet-cart-button-container:first-child {
    margin-top: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(4)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(5))) .wallet-cart-button {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
  }
}

@container dcc (width <= 790px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(5)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(6))) {
    justify-content: start;
    flex-direction: column;
    margin: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(5)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(6))) .wallet-cart-button-container {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
    margin: var(--wallet-button-container-margin-vertical);
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(5)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(6))) .wallet-cart-button-container:first-child {
    margin-top: 0;
  }
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(5)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(6))) .wallet-cart-button {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
  }
}

.wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(6)) {
  justify-content: start;
  flex-direction: column;
  margin: 0;
}
.wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(6)) .wallet-cart-button-container {
  width: var(--wallet-button-width-vertical);
  height: var(--wallet-button-height-vertical);
  margin: var(--wallet-button-container-margin-vertical);
}
.wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(6)) .wallet-cart-button-container:first-child {
  margin-top: 0;
}
.wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(6)) .wallet-cart-button {
  width: var(--wallet-button-width-vertical);
  height: var(--wallet-button-height-vertical);
}

@media screen and (max-width: 750px) {
  .wallet-cart-grid {
    justify-content: start;
    flex-direction: column;
    max-width: none;
    margin: 0;
  }
  .wallet-cart-grid .wallet-cart-button-container {
    max-width: none;
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
    margin: var(--wallet-button-container-margin-vertical);
  }
  .wallet-cart-grid .wallet-cart-button-container:first-child {
    margin-top: 0;
  }
  .wallet-cart-grid .wallet-cart-button {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
  }
}

@supports (not (container-type: inline-size)) or (not (selector(:has(*)))) {
  .wallet-cart-grid {
    justify-content: start;
    flex-direction: column;
    margin: 0;
  }
  .wallet-cart-button-container {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
    margin: var(--wallet-button-container-margin-vertical);
  }
  .wallet-cart-button-container:first-child {
    margin-top: 0;
  }
  .wallet-cart-grid .wallet-cart-button {
    width: var(--wallet-button-width-vertical);
    height: var(--wallet-button-height-vertical);
  }
}

        #shopify-buyer-consent {
  margin-top: 1em;
  display: inline-block;
  width: 100%;
}

#shopify-buyer-consent.hidden {
  display: none;
}

#shopify-subscription-policy-button {
  background: none;
  border: none;
  padding: 0;
  text-decoration: underline;
  font-size: inherit;
  cursor: pointer;
}

#shopify-subscription-policy-button::before {
  box-shadow: none;
}

      </style>

<style id="shopify-accelerated-checkout-cart-grid-with-margin-top">.additional-checkout-buttons--vertical .wallet-cart-grid .wallet-cart-button-container:first-child {
  margin-top: 8px;
}


@container dcc (width >= 150px) and (width <= 500px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(1)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(2))) .wallet-cart-button-container:first-child {
    margin-top: 8px;
  }
}

@container dcc (width <= 310px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(2)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(3))) .wallet-cart-button-container:first-child {
    margin-top: 8px;
  }
}

@container dcc (width <= 470px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(3)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(4))) .wallet-cart-button-container:first-child {
    margin-top: 8px;
  }
}

@container dcc (width <= 630px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(4)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(5))) .wallet-cart-button-container:first-child {
    margin-top: 8px;
  }
}

@container dcc (width <= 790px) {
  .wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(5)).wallet-cart-grid:not(:has(>.wallet-cart-button-container:nth-of-type(6))) .wallet-cart-button-container:first-child {
    margin-top: 8px;
  }
}

.wallet-cart-grid:has(>.wallet-cart-button-container:nth-of-type(6)) .wallet-cart-button-container:first-child {
  margin-top: 8px;
}

@media screen and (max-width: 750px) {
  .wallet-cart-grid .wallet-cart-button-container:first-child {
    margin-top: 8px;
  }
}

@supports (not (container-type: inline-size)) or (not (selector(:has(*)))) {
  .wallet-cart-button-container:first-child {
    margin-top: 8px;
  }
}
</style>
<script>window.performance && window.performance.mark && window.performance.mark('shopify.content_for_header.end');</script>

  <link href="//retinaguard.com/cdn/shop/t/37/assets/style.css?v=40651199957831090061674764578" rel="stylesheet" type="text/css" media="all" />

  <!--[if lt IE 8]>
    <script src="//retinaguard.com/cdn/shop/t/37/assets/json2.js?v=154133857350868653501421635182" type="text/javascript"></script>
  <![endif]-->

  <!--[if lt IE 9]>
  <script type="text/javascript" src="https://getfirebug.com/firebug-lite.js"></script>
  <script src="//html5shim.googlecode.com/svn/trunk/html5.js" type="text/javascript"></script>
  <script src="//retinaguard.com/cdn/shop/t/37/assets/dd_roundies.js?v=75117064764312664521421635179" type="text/javascript"></script>
  <script>
  DD_roundies.addRule('.circle', '45px');
  </script>
  <![endif]-->

  <script src="//retinaguard.com/cdn/shop/t/37/assets/custom.modernizr.js?v=44331738608728928201421635179" type="text/javascript"></script>
  <script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js" type="text/javascript"></script>
  <script src="//ajax.googleapis.com/ajax/libs/jqueryui/1.10.3/jquery-ui.min.js" type="text/javascript"></script>
  <script src="//retinaguard.com/cdn/shopifycloud/shopify/assets/themes_support/api.jquery-b0af070cfe3f5cf7c92f9e2a5da2665ee07ed2aad63bb408f8d6672f894a5996.js" type="text/javascript"></script>
  <script src="//retinaguard.com/cdn/shopifycloud/shopify/assets/themes_support/option_selection-86cdd286ddf3be7e25d68b9fc5965d7798a3ff6228ff79af67b3f4e41d6a34be.js" type="text/javascript"></script>

  
  <script>
    var twitterID = '',
    general_external_links_enabled = true,
    general_scroll_to_active_item = false,
    shop_url = 'https://retinaguard.com',
    shop_money_format = '${{amount}}',
    home_slider_auto_enabled = true,
    home_slider_rotate_frequency = 10000,
    home_widget_twitter_enabled = true,
    home_widget_blog_enabled = true,
    product_zoom_enabled = true,
    product_modal_enabled = true;
  </script>

<script type="text/javascript"> 
//<![CDATA[
(function(){function a(a){var b,c,d=window.document.createElement("iframe");d.src="javascript:false",(d.frameElement||d).style.cssText="width: 0; height: 0; border: 0";var e=window.document.createElement("div");e.style.display="none";var f=window.document.createElement("div");e.appendChild(f),window.document.body.insertBefore(e,window.document.body.firstChild),f.appendChild(d);try{c=d.contentWindow.document}catch(g){b=document.domain,d.src="javascript:var d=document.open();d.domain='"+b+"';void(0);",c=d.contentWindow.document}return c.open()._l=function(){b&&(this.domain=b);var c=this.createElement("scr".concat("ipt"));c.src=a,this.body.appendChild(c)},c.write("<bo".concat('dy onload="document._l();">')),c.close(),d}var b="nostojs";window[b]=window[b]||function(a){(window[b].q=window[b].q||[]).push(a)},window[b].l=new Date;var c=function(d,e){if(!document.body)return setTimeout(function(){c(d,e)},30);e=e||{},window[b].o=e;var f=document.location.protocol,g=["https:"===f?f:"http:","//",e.host||"connect.nosto.com",e.path||"/include/",d].join("");a(g)};window[b].init=c})();

nostojs.init('shopify-6820971');

//]]> 
</script>
<!-- Hits Analytics tracking code -->

  
<!-- end of Hits Analytics code -->

 
        <script>
        !function(t,n){function o(n){var o=t.getElementsByTagName("script")[0],i=t.createElement("script");i.src=n,i.crossOrigin="",o.parentNode.insertBefore(i,o)}if(!n.isLoyaltyLion){window.loyaltylion=n,void 0===window.lion&&(window.lion=n),n.version=2,n.isLoyaltyLion=!0;var i=new Date,e=i.getFullYear().toString()+i.getMonth().toString()+i.getDate().toString();o("https://sdk.loyaltylion.net/static/2/loader.js?t="+e);var r=!1;n.init=function(t){if(r)throw new Error("Cannot call lion.init more than once");r=!0;var a=n._token=t.token;if(!a)throw new Error("Token must be supplied to lion.init");for(var l=[],s="_push configure bootstrap shutdown on removeListener".split(" "),c=0;c<s.length;c+=1)!function(t,n){t[n]=function(){l.push([n,Array.prototype.slice.call(arguments,0)])}}(n,s[c]);o("https://sdk.loyaltylion.net/sdk/start/"+a+".js?t="+e+i.getHours().toString()),n._initData=t,n._buffer=l}}}(document,window.loyaltylion||[]);
        
  loyaltylion.init({ token: '5a25a39e1c1f8bac1c5f3a2951b05af7' });


      </script>


      <link rel="amphtml" href="//retinaguard.com/apps/fireamp/blogs/news/what-is-blue-light" >
  <!-- BEGIN app block: shopify://apps/currency-converter-plus/blocks/app-embed-block/a56d6bd1-e9df-4a4a-b98e-e9bb5c43a042 --><script src="//cdn.codeblackbelt.com/scripts/currency-converter-plus/main.min.js?version=2024122706+0800" async></script>
<!-- END app app block --><meta property="og:image" content="https://cdn.shopify.com/s/files/1/0682/0971/files/checkout_logo_37.png?height=628&pad_color=fff&v=1613520767&width=1200" />
<meta property="og:image:secure_url" content="https://cdn.shopify.com/s/files/1/0682/0971/files/checkout_logo_37.png?height=628&pad_color=fff&v=1613520767&width=1200" />
<meta property="og:image:width" content="1200" />
<meta property="og:image:height" content="628" />
<link href="https://monorail-edge.shopifysvc.com" rel="dns-prefetch">
<script>(function(){if ("sendBeacon" in navigator && "performance" in window) {var session_token = document.cookie.match(/_shopify_s=([^;]*)/);function handle_abandonment_event(e) {var entries = performance.getEntries().filter(function(entry) {return /monorail-edge.shopifysvc.com/.test(entry.name);});if (!window.abandonment_tracked && entries.length === 0) {window.abandonment_tracked = true;var currentMs = Date.now();var navigation_start = performance.timing.navigationStart;var payload = {shop_id: 6820971,url: window.location.href,navigation_start,duration: currentMs - navigation_start,session_token: session_token && session_token.length === 2 ? session_token[1] : "",page_type: "article"};window.navigator.sendBeacon("https://monorail-edge.shopifysvc.com/v1/produce", JSON.stringify({schema_id: "online_store_buyer_site_abandonment/1.1",payload: payload,metadata: {event_created_at_ms: currentMs,event_sent_at_ms: currentMs}}));}}window.addEventListener('pagehide', handle_abandonment_event);}}());</script>
<script id="web-pixels-manager-setup">(function d(d,e,r,a,n){var o,i,t,s,l=(i=(o={modern:/Edge?\/(1{2}[4-9]|1[2-9]\d|[2-9]\d{2}|\d{4,})\.\d+(\.\d+|)|Firefox\/(1{2}[4-9]|1[2-9]\d|[2-9]\d{2}|\d{4,})\.\d+(\.\d+|)|Chrom(ium|e)\/(9{2}|\d{3,})\.\d+(\.\d+|)|(Maci|X1{2}).+ Version\/(15\.\d+|(1[6-9]|[2-9]\d|\d{3,})\.\d+)([,.]\d+|)( \(\w+\)|)( Mobile\/\w+|) Safari\/|Chrome.+OPR\/(9{2}|\d{3,})\.\d+\.\d+|(CPU[ +]OS|iPhone[ +]OS|CPU[ +]iPhone|CPU IPhone OS|CPU iPad OS)[ +]+(15[._]\d+|(1[6-9]|[2-9]\d|\d{3,})[._]\d+)([._]\d+|)|Android:?[ /-](12[89]|1[3-9]\d|[2-9]\d{2}|\d{4,})(\.\d+|)(\.\d+|)|Android.+Firefox\/(12[7-9]|1[3-9]\d|[2-9]\d{2}|\d{4,})\.\d+(\.\d+|)|Android.+Chrom(ium|e)\/(12[89]|1[3-9]\d|[2-9]\d{2}|\d{4,})\.\d+(\.\d+|)|SamsungBrowser\/([2-9]\d|\d{3,})\.\d+/,legacy:/Edge?\/(1[6-9]|[2-9]\d|\d{3,})\.\d+(\.\d+|)|Firefox\/(5[4-9]|[6-9]\d|\d{3,})\.\d+(\.\d+|)|Chrom(ium|e)\/(5[1-9]|[6-9]\d|\d{3,})\.\d+(\.\d+|)([\d.]+$|.*Safari\/(?![\d.]+ Edge\/[\d.]+$))|(Maci|X1{2}).+ Version\/(10\.\d+|(1[1-9]|[2-9]\d|\d{3,})\.\d+)([,.]\d+|)( \(\w+\)|)( Mobile\/\w+|) Safari\/|Chrome.+OPR\/(3[89]|[4-9]\d|\d{3,})\.\d+\.\d+|(CPU[ +]OS|iPhone[ +]OS|CPU[ +]iPhone|CPU IPhone OS|CPU iPad OS)[ +]+(10[._]\d+|(1[1-9]|[2-9]\d|\d{3,})[._]\d+)([._]\d+|)|Android:?[ /-](12[89]|1[3-9]\d|[2-9]\d{2}|\d{4,})(\.\d+|)(\.\d+|)|Mobile Safari.+OPR\/([89]\d|\d{3,})\.\d+\.\d+|Android.+Firefox\/(12[7-9]|1[3-9]\d|[2-9]\d{2}|\d{4,})\.\d+(\.\d+|)|Android.+Chrom(ium|e)\/(12[89]|1[3-9]\d|[2-9]\d{2}|\d{4,})\.\d+(\.\d+|)|Android.+(UC? ?Browser|UCWEB|U3)[ /]?(15\.([5-9]|\d{2,})|(1[6-9]|[2-9]\d|\d{3,})\.\d+)\.\d+|SamsungBrowser\/(5\.\d+|([6-9]|\d{2,})\.\d+)|Android.+MQ{2}Browser\/(14(\.(9|\d{2,})|)|(1[5-9]|[2-9]\d|\d{3,})(\.\d+|))(\.\d+|)|K[Aa][Ii]OS\/(3\.\d+|([4-9]|\d{2,})\.\d+)(\.\d+|)/}).modern,t=o.legacy,s=navigator.userAgent,i.test(s)?"modern":(t.test(s),"legacy"));window.Shopify=window.Shopify||{};var c=window.Shopify;c.analytics=c.analytics||{};var u=c.analytics;u.replayQueue=[],u.publish=function(d,e,r){return u.replayQueue.push([d,e,r]),!0};try{self.performance.mark("wpm:start")}catch(d){}var h=[r,"/wpm","/b",n,l.substring(0,1),".js"].join("");!function(d){var e=d.src,r=d.async,a=void 0===r||r,n=d.onload,o=d.onerror,i=document.createElement("script"),t=document.head,s=document.body;i.async=a,i.src=e,n&&i.addEventListener("load",n),o&&i.addEventListener("error",o),t?t.appendChild(i):s?s.appendChild(i):console.error("Did not find a head or body element to append the script")}({src:h,async:!0,onload:function(){var r=window.webPixelsManager.init(d);e(r);var a=window.Shopify.analytics;a.replayQueue.forEach((function(d){var e=d[0],a=d[1],n=d[2];r.publishCustomEvent(e,a,n)})),a.replayQueue=[],a.publish=r.publishCustomEvent,a.visitor=r.visitor},onerror:function(){var e=d.storefrontBaseUrl.replace(/\/$/,""),r="".concat(e,"/.well-known/shopify/monorail/unstable/produce_batch"),n=JSON.stringify({metadata:{event_sent_at_ms:(new Date).getTime()},events:[{schema_id:"web_pixels_manager_load/3.1",payload:{version:a||"latest",bundle_target:l,page_url:self.location.href,status:"failed",surface:d.surface,error_msg:"".concat(h," has failed to load")},metadata:{event_created_at_ms:(new Date).getTime()}}]});try{if(self.navigator.sendBeacon.bind(self.navigator)(r,n))return!0}catch(d){}var o=new XMLHttpRequest;try{return o.open("POST",r,!0),o.setRequestHeader("Content-Type","text/plain"),o.send(n),!0}catch(d){console&&console.warn&&console.warn("[Web Pixels Manager] Got an unhandled error while logging a load error.")}return!1}})})({shopId: 6820971,storefrontBaseUrl: "https://retinaguard.com",extensionsBaseUrl: "https://extensions.shopifycdn.com/cdn/shopifycloud/web-pixels-manager",surface: "storefront-renderer",enabledBetaFlags: [],webPixelsConfigList: [{"id":"398131287","configuration":"{\"config\":\"{\\\"pixel_id\\\":\\\"G-2E5JXRYJG2\\\",\\\"gtag_events\\\":[{\\\"type\\\":\\\"purchase\\\",\\\"action_label\\\":\\\"G-2E5JXRYJG2\\\"},{\\\"type\\\":\\\"page_view\\\",\\\"action_label\\\":\\\"G-2E5JXRYJG2\\\"},{\\\"type\\\":\\\"view_item\\\",\\\"action_label\\\":\\\"G-2E5JXRYJG2\\\"},{\\\"type\\\":\\\"search\\\",\\\"action_label\\\":\\\"G-2E5JXRYJG2\\\"},{\\\"type\\\":\\\"add_to_cart\\\",\\\"action_label\\\":\\\"G-2E5JXRYJG2\\\"},{\\\"type\\\":\\\"begin_checkout\\\",\\\"action_label\\\":\\\"G-2E5JXRYJG2\\\"},{\\\"type\\\":\\\"add_payment_info\\\",\\\"action_label\\\":\\\"G-2E5JXRYJG2\\\"}],\\\"enable_monitoring_mode\\\":false}\"}","eventPayloadVersion":"v1","runtimeContext":"OPEN","scriptVersion":"afe7c2de16587d6c6689522527d6c67f","type":"APP","apiClientId":1780363,"privacyPurposes":[]},{"id":"96403543","configuration":"{\"pixel_id\":\"184133892200458\",\"pixel_type\":\"facebook_pixel\",\"metaapp_system_user_token\":\"-\"}","eventPayloadVersion":"v1","runtimeContext":"OPEN","scriptVersion":"8d894c63179843e74a9691414b5ad83d","type":"APP","apiClientId":2329312,"privacyPurposes":["ANALYTICS","MARKETING","SALE_OF_DATA"]},{"id":"shopify-app-pixel","configuration":"{}","eventPayloadVersion":"v1","runtimeContext":"STRICT","scriptVersion":"0220","apiClientId":"shopify-pixel","type":"APP","privacyPurposes":["ANALYTICS","MARKETING"]},{"id":"shopify-custom-pixel","eventPayloadVersion":"v1","runtimeContext":"LAX","scriptVersion":"0220","apiClientId":"shopify-pixel","type":"CUSTOM","privacyPurposes":["ANALYTICS","MARKETING"]}],isMerchantRequest: false,initData: {"shop":{"name":"RetinaGuard Store ","paymentSettings":{"currencyCode":"USD"},"myshopifyDomain":"retinaguard-store.myshopify.com","countryCode":"TW","storefrontUrl":"https:\/\/retinaguard.com"},"customer":null,"cart":null,"checkout":null,"productVariants":[],"purchasingCompany":null},},function pageEvents(webPixelsManagerAPI) {webPixelsManagerAPI.publish("page_viewed", {});},"https://retinaguard.com/cdn","15679e4c73535ffc88c691fec2c57d6b6dd757f6","70383a35w7726c023p4d88ec8dm493e98ec",);</script>  <script>window.ShopifyAnalytics = window.ShopifyAnalytics || {};
window.ShopifyAnalytics.meta = window.ShopifyAnalytics.meta || {};
window.ShopifyAnalytics.meta.currency = 'USD';
var meta = {"page":{"pageType":"article","resourceType":"article","resourceId":35766501463}};
for (var attr in meta) {
  window.ShopifyAnalytics.meta[attr] = meta[attr];
}</script>
<script>window.ShopifyAnalytics.merchantGoogleAnalytics = function() {
  (function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
  (i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
  m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
  })(window,document,'script','https://www.google-analytics.com/analytics.js','ga');

  ga('create', 'UA-79233820-1', 'auto');
  ga('send', 'pageview');
};
</script>
<script class="analytics">(window.gaDevIds=window.gaDevIds||[]).push('BwiEti');


(function () {
    var customDocumentWrite = function(content) {
      var jquery = null;

      if (window.jQuery) {
        jquery = window.jQuery;
      } else if (window.Checkout && window.Checkout.$) {
        jquery = window.Checkout.$;
      }

      if (jquery) {
        jquery('body').append(content);
      }
    };

    var hasLoggedConversion = function(token) {
      if (token) {
        return document.cookie.indexOf('loggedConversion=' + token) !== -1;
      }
      return false;
    }

    var setCookieIfConversion = function(token) {
      if (token) {
        var twoMonthsFromNow = new Date(Date.now());
        twoMonthsFromNow.setMonth(twoMonthsFromNow.getMonth() + 2);

        document.cookie = 'loggedConversion=' + token + '; expires=' + twoMonthsFromNow;
      }
    }

    var trekkie = window.ShopifyAnalytics.lib = window.trekkie = window.trekkie || [];
    if (trekkie.integrations) {
      return;
    }
    trekkie.methods = [
      'identify',
      'page',
      'ready',
      'track',
      'trackForm',
      'trackLink'
    ];
    trekkie.factory = function(method) {
      return function() {
        var args = Array.prototype.slice.call(arguments);
        args.unshift(method);
        trekkie.push(args);
        return trekkie;
      };
    };
    for (var i = 0; i < trekkie.methods.length; i++) {
      var key = trekkie.methods[i];
      trekkie[key] = trekkie.factory(key);
    }
    trekkie.load = function(config) {
      trekkie.config = config || {};
      trekkie.config.initialDocumentCookie = document.cookie;
      var first = document.getElementsByTagName('script')[0];
      var script = document.createElement('script');
      script.type = 'text/javascript';
      script.onerror = function(e) {
        var scriptFallback = document.createElement('script');
        scriptFallback.type = 'text/javascript';
        scriptFallback.onerror = function(error) {
                var Monorail = {
      produce: function produce(monorailDomain, schemaId, payload) {
        var currentMs = new Date().getTime();
        var event = {
          schema_id: schemaId,
          payload: payload,
          metadata: {
            event_created_at_ms: currentMs,
            event_sent_at_ms: currentMs
          }
        };
        return Monorail.sendRequest("https://" + monorailDomain + "/v1/produce", JSON.stringify(event));
      },
      sendRequest: function sendRequest(endpointUrl, payload) {
        // Try the sendBeacon API
        if (window && window.navigator && typeof window.navigator.sendBeacon === 'function' && typeof window.Blob === 'function' && !Monorail.isIos12()) {
          var blobData = new window.Blob([payload], {
            type: 'text/plain'
          });

          if (window.navigator.sendBeacon(endpointUrl, blobData)) {
            return true;
          } // sendBeacon was not successful

        } // XHR beacon

        var xhr = new XMLHttpRequest();

        try {
          xhr.open('POST', endpointUrl);
          xhr.setRequestHeader('Content-Type', 'text/plain');
          xhr.send(payload);
        } catch (e) {
          console.log(e);
        }

        return false;
      },
      isIos12: function isIos12() {
        return window.navigator.userAgent.lastIndexOf('iPhone; CPU iPhone OS 12_') !== -1 || window.navigator.userAgent.lastIndexOf('iPad; CPU OS 12_') !== -1;
      }
    };
    Monorail.produce('monorail-edge.shopifysvc.com',
      'trekkie_storefront_load_errors/1.1',
      {shop_id: 6820971,
      theme_id: 12322459,
      app_name: "storefront",
      context_url: window.location.href,
      source_url: "//retinaguard.com/cdn/s/trekkie.storefront.8b4c16448efd5412843a4e489d8eb4898c09f6d2.min.js"});

        };
        scriptFallback.async = true;
        scriptFallback.src = '//retinaguard.com/cdn/s/trekkie.storefront.8b4c16448efd5412843a4e489d8eb4898c09f6d2.min.js';
        first.parentNode.insertBefore(scriptFallback, first);
      };
      script.async = true;
      script.src = '//retinaguard.com/cdn/s/trekkie.storefront.8b4c16448efd5412843a4e489d8eb4898c09f6d2.min.js';
      first.parentNode.insertBefore(script, first);
    };
    trekkie.load(
      {"Trekkie":{"appName":"storefront","development":false,"defaultAttributes":{"shopId":6820971,"isMerchantRequest":null,"themeId":12322459,"themeCityHash":"2542447832089856812","contentLanguage":"en","currency":"USD"},"isServerSideCookieWritingEnabled":true,"monorailRegion":"shop_domain"},"Google Analytics":{"trackingId":"UA-79166586-1","domain":"auto","siteSpeedSampleRate":"10","enhancedEcommerce":true,"doubleClick":true,"includeSearch":true},"Session Attribution":{},"S2S":{"facebookCapiEnabled":true,"source":"trekkie-storefront-renderer","apiClientId":580111}}
    );

    var loaded = false;
    trekkie.ready(function() {
      if (loaded) return;
      loaded = true;

      window.ShopifyAnalytics.lib = window.trekkie;

        ga('require', 'linker');
      function addListener(element, type, callback) {
        if (element.addEventListener) {
          element.addEventListener(type, callback);
        }
        else if (element.attachEvent) {
          element.attachEvent('on' + type, callback);
        }
      }
      function decorate(event) {
        event = event || window.event;
        var target = event.target || event.srcElement;
        if (target && (target.getAttribute('action') || target.getAttribute('href'))) {
          ga(function (tracker) {
            var linkerParam = tracker.get('linkerParam');
            document.cookie = '_shopify_ga=' + linkerParam + '; ' + 'path=/';
          });
        }
      }
      addListener(window, 'load', function(){
        for (var i=0; i < document.forms.length; i++) {
          var action = document.forms[i].getAttribute('action');
          if(action && action.indexOf('/cart') >= 0) {
            addListener(document.forms[i], 'submit', decorate);
          }
        }
        for (var i=0; i < document.links.length; i++) {
          var href = document.links[i].getAttribute('href');
          if(href && href.indexOf('/checkout') >= 0) {
            addListener(document.links[i], 'click', decorate);
          }
        }
      });
    

      var originalDocumentWrite = document.write;
      document.write = customDocumentWrite;
      try { window.ShopifyAnalytics.merchantGoogleAnalytics.call(this); } catch(error) {};
      document.write = originalDocumentWrite;

      window.ShopifyAnalytics.lib.page(null,{"pageType":"article","resourceType":"article","resourceId":35766501463});

      var match = window.location.pathname.match(/checkouts\/(.+)\/(thank_you|post_purchase)/)
      var token = match? match[1]: undefined;
      if (!hasLoggedConversion(token)) {
        setCookieIfConversion(token);
        
      }
    });


        var eventsListenerScript = document.createElement('script');
        eventsListenerScript.async = true;
        eventsListenerScript.src = "//retinaguard.com/cdn/shopifycloud/shopify/assets/shop_events_listener-61fa9e0a912c675e178777d2b27f6cbd482f8912a6b0aa31fa3515985a8cd626.js";
        document.getElementsByTagName('head')[0].appendChild(eventsListenerScript);

})();</script>
<script class="boomerang">
(function () {
  window.BOOMR = window.BOOMR || {};
  window.BOOMR.themeName = "";
  window.BOOMR.themeVersion = "";
  window.BOOMR.shopId = 6820971;
  window.BOOMR.themeId = 12322459;
})();</script>
<script
  defer
  src="https://retinaguard.com/cdn/shopifycloud/perf-kit/shopify-perf-kit-1.1.0.min.js"
  data-application="storefront-renderer"
  data-shop-id="6820971"
  data-render-region="gcp-us-central1"
  data-page-type="article"
  data-theme-instance-id="12322459"
  data-monorail-region="shop_domain"
  data-resource-timing-sampling-rate="10"
></script>
</head>


<body class="page-what-is-blue-light template-article">

  <header class="main-header">
    <div class="bg"></div>
    <div class="row top">
      <div class="columns logo-center">
        <h1 class="title clearfix" role="banner">
  
    <a href="/" role="banner" title="RetinaGuard Store ">
    <img src="//retinaguard.com/cdn/shop/t/37/assets/checkout_logo_image.png?v=140281021399951171481424918645" data-retina="//retinaguard.com/cdn/shop/t/37/assets/logo-retina.png?v=53183532997655368531424918776" alt="RetinaGuard Store "> 
    </a>
  
</h1>
      </div>

      <div class="search-account columns">
        <div class="menu">
  
    <a class="searchbar-open" href="#">Search<span aria-hidden="true" class="glyph search"></span></a>
  

    <a class="account-open" href="#">Account<span aria-hidden="true" class="glyph account"></span></a>
  
    
</div>

<div class="searchbar-container">
  <form  action="/search" method="get" role="search">
    
    <input name="q" type="text" placeholder="Search store..." class="search-box hint text" />
    
    <button class="glyph search"></button>
  </form>
  <a href="#" aria-hidden="true" class="searchbar-close glyph cross"></a>
</div>

<div class="account-container">
  
    <a href="/account/login" id="customer_login_link">Log in</a> <span class="font-normal">or</span> <a href="/account/register" id="customer_register_link">Sign Up</a>
  
  <a href="#" aria-hidden="true" class="account-close glyph cross"></a>
</div>


      </div>
      
    </div><!-- .row -->

    <div class="bottom-row">
      <div class="row">
        <div class="columns menu-container text-center">
          <div class="main-menu">
  <nav role="navigation" class="widescreen clearfix">
    <ul class="font-nav">
      
          
            <li class="nav-item dropdown">
              <a class="nav-item-link" href="/pages/about-blue-light">
                About blue light <span aria-hidden="true" class="glyph arrow-down"></span>
              </a>

                <ul class="sub-nav">
                  <li>
                    <div class="columns large-3">
                      <ul>
                      
                        <li class="sub-nav-item"><a href="/pages/over-view" title="">Overview</a></li>
                      
                        <li class="sub-nav-item"><a href="/pages/insomnia" title="">Insomnia</a></li>
                      
                        <li class="sub-nav-item"><a href="/pages/vision-loss" title="">Vision Loss</a></li>
                      
                        <li class="sub-nav-item"><a href="/pages/children-elderly" title="">Children & Elderly</a></li>
                      
                        <li class="sub-nav-item"><a href="/pages/present-media" title="">Press & Media</a></li>
                      
                      </ul>
                    </div>
                  </li>
                </ul>
            </li>

          
            <li class="nav-item dropdown">
              <a class="nav-item-link" href="/collections/all">
                Anti-Blue Light Screen Protectors <span aria-hidden="true" class="glyph arrow-down"></span>
              </a>

              <ul class="sub-nav catalog">              
                <li class="sub-nav-item row">
                  
                    <div class="columns large-3">
                      
                        <h3 class="title">iPhone</h3>
                      
                      <ul>
                        
                           <li><a href="/collections/pet-iphone-12-mini-12-12-pro-12-pro-max" title="">iPhone 12 ‧ 12 mini ‧ 12 Pro ‧ 12 Pro Max</a></li>
                        
                           <li><a href="/collections/pet-iphone-x-xr-xs-xs-max-1" title="">iPhone 11 ‧ 11Pro ‧ 11 Pro Max</a></li>
                        
                           <li><a href="/collections/pet-iphone-x-xr-xs-xs-max" title="">iPhone X ‧ XR ‧ Xs ‧ Xs Max</a></li>
                        
                           <li><a href="/collections/pet-iphone-8-8-plus" title="">iPhone SE ‧ 2020 iPhone 8 ‧ 8 Plus</a></li>
                        
                           <li><a href="/collections/nintendo-switch" title="">Nintendo Switch</a></li>
                        
                      </ul>
                    </div>
                  

                    <div class="columns large-3">
                      
                        <h3 class="title">iPad</h3>
                      
                      <ul>
                        
                           <li><a href="/collections/pet-2021-ipad-pro" title="">2021 iPad Pro</a></li>
                        
                           <li><a href="/collections/pet-2020-ipad-air-4" title="">2020 iPad Air 4</a></li>
                        
                           <li><a href="/collections/ipad-pro" title="">2020 iPad Pro ‧ 2018 iPad Pro </a></li>
                        
                           <li><a href="/collections/ipad-air" title="">2019 iPad Air 3 ‧ Air 2 ‧ Air </a></li>
                        
                           <li><a href="/collections/2019-ipad" title="">2020 iPad 8th Gen ‧ 2019 iPad 7th Gen</a></li>
                        
                           <li><a href="/products/anti-blue-light-screen-protector-black-border" title="">2019 iPad mini 5 / iPad mini 4</a></li>
                        
                           <li><a href="/collections/ipad-mini-retina" title="">iPad mini ‧ mini 2 ‧ mini 3</a></li>
                        
                           <li><a href="/collections/ipad-4-new-ipad" title="">iPad 4 ‧ New iPad</a></li>
                        
                      </ul>
                    </div>
                  

                    <div class="columns large-3">
                      
                        <h3 class="title">Macbook</h3>
                      
                      <ul>
                        
                           <li><a href="/collections/macbook-pro-15-13" title="">Macbook Pro</a></li>
                        
                           <li><a href="/collections/macbook-air" title="">Macbook Air</a></li>
                        
                      </ul>
                    </div>
                  

                    <div class="columns large-3">
                      
                        <h3 class="title">Android</h3>
                      
                      <ul>
                        
                      </ul>
                    </div>
                  

                </li>
              </ul>
            </li>
          

            <li class="nav-item dropdown">
              <a class="nav-item-link" href="/pages/anti-blue-light-tempered-glass-screen-protector">
                Tempered Glass Screen Protectors <span aria-hidden="true" class="glyph arrow-down"></span>
              </a>

                <ul class="sub-nav">
                  <li>
                    <div class="columns large-3">
                      <ul>
                      
                        <li class="sub-nav-item"><a href="https://retinaguard.com/collections/current-models/products/anti-blue-light-tempered-glass-screen-protectors-for-iphone-15" title="">iPhone 15‧ 15 Plus ‧ 15 Pro ‧ 15 Pro Max</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-14-14-plus-14-pro-14-pro-max" title="">iPhone 14 ‧ 14 Plus ‧ 14 Pro ‧ 14 Pro Max</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-13-13-mini-13-pro-13-pro-max" title="">iPhone 13 ‧ 13 mini ‧ 13 Pro ‧ 13 Pro Max</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-12-12-mini-12-pro-12-pro-max" title="">iPhone 12 ‧ 12 mini ‧ 12 Pro ‧ 12 Pro Max</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max" title="">iPhone 11 ‧ 11 Pro ‧ 11 Pro Max</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-x-xr-xs-xs-max" title="">iPhone X ‧ XR ‧ Xs ‧ Xs Max</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/iphone-8-iphone-8-plus-iphone-x" title="">iPhone SE 2020 ‧ iPhone 8 ‧ 8 Plus</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-pro" title="">iPad Pro</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-air" title="">iPad Air</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-mini" title="">iPad mini</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad" title="">iPad</a></li>
                      
                      </ul>
                    </div>
                  </li>
                </ul>
            </li>

          
            <li class="nav-item">
              <a class="nav-item-link" href="/collections/anti-glare-ant-blue-light-screen-protectors">
                ANTI-GLARE + ANT-BLUE LIGHT
              </a>
            </li>
          

            <li class="nav-item">
              <a class="nav-item-link" href="/blogs/news">
                Blog
              </a>
            </li>
          

            <li class="nav-item">
              <a class="nav-item-link" href="/pages/instruction">
                Instructions
              </a>
            </li>
          

    </ul>
  </nav>

</div>

        </div>
        
        <div class="columns cart-container">
           <div class="cart">
 	<div class="show-for-medium-up">
	  <a class="cart-link" href="/cart">Cart <span class="number-wrapper hide">(<span class="number">0</span>)</span><span aria-hidden="true" class="glyph cart"></span></a>

		<div class="recently-added">
		  <table width="100%">
			  <thead>
			    <tr>
			      <td colspan="3">Recently Added</td>
			    </tr>
			  </thead>
			  
			  <tbody>
					

			  </tbody>

			  <tfoot>
			    <tr>
						<td class="items-count"><a href="/cart"><span class="number">0</span> Items</a></td>
						<td colspan="2" class="text-right"><strong>TOTAL <span class="total-price" style="margin-left:5px;">$0.00</span></strong></td>
			    </tr>
			  </tfoot>
			  
			</table>

			<div class="row"> 
			  <div class="checkout columns">
			    <a class="button" href="/cart">Go to Checkout</a>
			  </div><!-- #cart-meta -->
			</div>

			<div class="error">
			  <p>The item you just added is unavailable. Please select another product or variant.</p>
			</div>

		</div>
	</div>

	<div class="show-for-small hide-for-ie9-down">
		<div class="recently-added-mask hide"></div>
		<div class="recently-added mobile">
			<a aria-hidden="true" class="close glyph cross"></a>
			

			<div class="row">
				<div class="columns">
					<p><strong>RECENTLY ADDED</strong></p>
					<p class="mobile-item"></p>
					<p class="items-count"><a href="/cart"><span class="number">0</span> Items</a></p>
					<p><strong>TOTAL <span class="total-price" style="margin-left:5px;">$0.00</span></strong></p>
				</div>
			</div>

			<div class="row">
			  <div class="checkout columns">
			    <a class="button" href="/cart">Go to Checkout</a>
			  </div><!-- #cart-meta -->
			</div>

			<div class="error">
			  <p>The item you just added is unavailable. Please select another product or variant.</p>
			</div>

		</div>
	</div>


</div>


        </div>

        <div class="mobile-tools">
          <a class="glyph menu" href=""></a>
          
          <a href="/search" class="glyph search"></a>
          
          
          <a href="/account" class="glyph account"></a>
          
          <a href="/cart" class="glyph cart"></a>

        </div>
      </div>
    </div>

    <div class="main-menu-dropdown-panel">
      <div class="row text-center">
      
      </div>
    </div>

    <div class="mobile-menu">
      <nav role="navigation">
  <ul class="font-nav">
    
        
          <li class="nav-item dropdown">
            <a class="dropdown-link" href="/pages/about-blue-light">
              About blue light <span aria-hidden="true" class="glyph plus"></span><span aria-hidden="true" class="glyph minus"></span>
            </a>
            <ul class="sub-nav">
              <li class="bg"></li>
              
                <li class="sub-nav-item"><a href="/pages/over-view" title="">Overview</a></li>
              
                <li class="sub-nav-item"><a href="/pages/insomnia" title="">Insomnia</a></li>
              
                <li class="sub-nav-item"><a href="/pages/vision-loss" title="">Vision Loss</a></li>
              
                <li class="sub-nav-item"><a href="/pages/children-elderly" title="">Children & Elderly</a></li>
              
                <li class="sub-nav-item"><a href="/pages/present-media" title="">Press & Media</a></li>
              
            </ul>
          </li>

        
          <li class="nav-item dropdown">
            <a class="dropdown-link" href="/collections/all">
              Anti-Blue Light Screen Protectors <span aria-hidden="true" class="glyph plus"></span><span aria-hidden="true" class="glyph minus"></span>
            </a>

            <ul class="sub-nav catalog">
              <li class="bg"></li>
              
              <li class="sub-nav-item">
                    <a class="dropdown-link" href="">iPhone <span aria-hidden="true" class="glyph plus"></span><span aria-hidden="true" class="glyph minus"></span></a>
                    <ul class="sub-nav">
                      <li class="bg"></li>
                      
                         <li><a href="/collections/pet-iphone-12-mini-12-12-pro-12-pro-max" title="">iPhone 12 ‧ 12 mini ‧ 12 Pro ‧ 12 Pro Max</a></li>
                      
                         <li><a href="/collections/pet-iphone-x-xr-xs-xs-max-1" title="">iPhone 11 ‧ 11Pro ‧ 11 Pro Max</a></li>
                      
                         <li><a href="/collections/pet-iphone-x-xr-xs-xs-max" title="">iPhone X ‧ XR ‧ Xs ‧ Xs Max</a></li>
                      
                         <li><a href="/collections/pet-iphone-8-8-plus" title="">iPhone SE ‧ 2020 iPhone 8 ‧ 8 Plus</a></li>
                      
                         <li><a href="/collections/nintendo-switch" title="">Nintendo Switch</a></li>
                      
                    </ul>
              </li>
              

              <li class="sub-nav-item">
                    <a class="dropdown-link" href="">iPad <span aria-hidden="true" class="glyph plus"></span><span aria-hidden="true" class="glyph minus"></span></a>
                    <ul class="sub-nav">
                      <li class="bg"></li>
                      
                         <li><a href="/collections/pet-2021-ipad-pro" title="">2021 iPad Pro</a></li>
                      
                         <li><a href="/collections/pet-2020-ipad-air-4" title="">2020 iPad Air 4</a></li>
                      
                         <li><a href="/collections/ipad-pro" title="">2020 iPad Pro ‧ 2018 iPad Pro </a></li>
                      
                         <li><a href="/collections/ipad-air" title="">2019 iPad Air 3 ‧ Air 2 ‧ Air </a></li>
                      
                         <li><a href="/collections/2019-ipad" title="">2020 iPad 8th Gen ‧ 2019 iPad 7th Gen</a></li>
                      
                         <li><a href="/products/anti-blue-light-screen-protector-black-border" title="">2019 iPad mini 5 / iPad mini 4</a></li>
                      
                         <li><a href="/collections/ipad-mini-retina" title="">iPad mini ‧ mini 2 ‧ mini 3</a></li>
                      
                         <li><a href="/collections/ipad-4-new-ipad" title="">iPad 4 ‧ New iPad</a></li>
                      
                    </ul>
              </li>
              

              <li class="sub-nav-item">
                    <a class="dropdown-link" href="">Macbook <span aria-hidden="true" class="glyph plus"></span><span aria-hidden="true" class="glyph minus"></span></a>
                    <ul class="sub-nav">
                      <li class="bg"></li>
                      
                         <li><a href="/collections/macbook-pro-15-13" title="">Macbook Pro</a></li>
                      
                         <li><a href="/collections/macbook-air" title="">Macbook Air</a></li>
                      
                    </ul>
              </li>
              

              <li class="sub-nav-item">
                    <a class="dropdown-link" href="">Android <span aria-hidden="true" class="glyph plus"></span><span aria-hidden="true" class="glyph minus"></span></a>
                    <ul class="sub-nav">
                      <li class="bg"></li>
                      
                    </ul>
              </li>
              

            </ul>
          </li>
        

          <li class="nav-item dropdown">
            <a class="dropdown-link" href="/pages/anti-blue-light-tempered-glass-screen-protector">
              Tempered Glass Screen Protectors <span aria-hidden="true" class="glyph plus"></span><span aria-hidden="true" class="glyph minus"></span>
            </a>
            <ul class="sub-nav">
              <li class="bg"></li>
              
                <li class="sub-nav-item"><a href="https://retinaguard.com/collections/current-models/products/anti-blue-light-tempered-glass-screen-protectors-for-iphone-15" title="">iPhone 15‧ 15 Plus ‧ 15 Pro ‧ 15 Pro Max</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-14-14-plus-14-pro-14-pro-max" title="">iPhone 14 ‧ 14 Plus ‧ 14 Pro ‧ 14 Pro Max</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-13-13-mini-13-pro-13-pro-max" title="">iPhone 13 ‧ 13 mini ‧ 13 Pro ‧ 13 Pro Max</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-12-12-mini-12-pro-12-pro-max" title="">iPhone 12 ‧ 12 mini ‧ 12 Pro ‧ 12 Pro Max</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max" title="">iPhone 11 ‧ 11 Pro ‧ 11 Pro Max</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-x-xr-xs-xs-max" title="">iPhone X ‧ XR ‧ Xs ‧ Xs Max</a></li>
              
                <li class="sub-nav-item"><a href="/collections/iphone-8-iphone-8-plus-iphone-x" title="">iPhone SE 2020 ‧ iPhone 8 ‧ 8 Plus</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-pro" title="">iPad Pro</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-air" title="">iPad Air</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-mini" title="">iPad mini</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad" title="">iPad</a></li>
              
            </ul>
          </li>

        
          <li class="nav-item">
            <a class="nav-item-link" href="/collections/anti-glare-ant-blue-light-screen-protectors">
              ANTI-GLARE + ANT-BLUE LIGHT
            </a>
          </li>
        

          <li class="nav-item">
            <a class="nav-item-link" href="/blogs/news">
              Blog
            </a>
          </li>
        

          <li class="nav-item">
            <a class="nav-item-link" href="/pages/instruction">
              Instructions
            </a>
          </li>
        

  </ul>
</nav>

    </div>

    <div class="row">
      <div class="header-divider"></div>
    </div>

  </header>

  <section class="main-content">
    
      
<div class="row show-for-medium-up">
  <div class="columns large-12">
    <ul class="breadcrumbs colored-links">
   <li><a href="/">Home</a></li>
   
       <li><a href="/blogs/news" title="">News</a></li>
       <li>What is Blue Light?</li>
         
</ul>
  </div> 
</div>

<div class="previous-next row">
  <div class="previous columns large-2 small-6">
    
      
      <span class="left"><a href="/blogs/news/how-does-screen-time-affect-your-brain-anxiety-overall-health" title=""><span aria-hidden="true" class="glyph arrow-left"></span> Previous </a></span>
    
    <div class="border-decoration show-for-large-up"></div>
  </div>

  <div class="next columns large-3 large-offset-7 small-6">
    
      
      <span class="right"><a href="/blogs/news/blue-light-and-your-eyes" title="">Next <span aria-hidden="true" class="glyph arrow-right"></span></a></span>
    
    <div class="border-decoration show-for-large-up"></div>
  </div>
</div>

<div class="left-two-columns-wrapper row"> 
  
  <div class="article columns large-9">
    
    <div class="left-sidebar columns large-3 show-for-large-up">
      <div class="date block">
        <h3 class="title">Date</h3>
        <p class="content">October 03 2019</p>
      </div>
        
      <div class="author block">
        <h3 class="title">Written By</h3>
        <p class="content">Heidi Green</p>
      </div>
      
      <div class="comments block">
        
          <h3 class="title">Comments</h3>
          <p class="content">0 Comments</p>
      </div>

    </div>

    <div class="middle-column columns large-9">
      <h1 class="title"><a href="/blogs/news/what-is-blue-light">What is Blue Light?</a></h1>
      <p class="mobile-meta show-for-medium-down">
        Written by Heidi Green - October 03 2019
      </p>
      <div class="content colored-links rte-content"><meta charset="utf-8">
<div class="block__rich_text_and_image block__1559220419737
    
    ">
<div class="container">
<div class="sixteen columns">
<div class="homepage_content section center clearfix">
<meta charset="utf-8">
<h1 class="ui-title-bar__title"></h1>
</div>
</div>
</div>
</div>
<div class="block__image_with_text block__1559220149811
    
    ">
<div class="container standard--width">
<div class="image-with-text
          featured_collections
          clearfix across-1 image-align--right">
<section class="featured-link--section featured-link--image section-4">
<div class="featured-link--half">
<div class="info text-align--left">
<meta charset="utf-8">
<a class="collection_title">
<h2 class="title">What is Blue Light?</h2>
<div class="feature_divider"></div>
<div class="regular_text">
<p>As laptops, tablets and smartphones have become more and more integrated into our daily lives, it makes sense to be aware of any potential negative effects they might have on our health. You’ve likely heard the term ‘blue light’ being bandied about, with suggestions it contributes to all kinds of nasties; from headaches and eye strain to straight-up insomnia. But - we hear you ask - what exactly is blue light, and how is it connected to our use of digital devices? Say no more, as we’ve got the lowdown…</p>
</div>
<br>The Light Spectrum</a>
<div class="description">To understand blue light and its various effects, we need to take a look at the bigger picture, also known as the ‘electromagnetic spectrum’. When you step outside into sunshine (rare enough in Ireland, we know), you’re actually basking in a whole host of electromagnetic particles, all of which travel in waves. Some of these waves are visible to the human eye, others - like the ultra-violet or UV rays that tan or burn our skin - aren’t. These waves also vary in terms of their length and strength, as well as how much energy they emit, with shorter wavelengths emitting higher energy. The electromagnetic spectrum is made up of red, orange, yellow, green and blue light, with blue being both visible to the human eye<span> </span><i>and</i><span> </span>emitting a high amount of energy. Therefore it’s known as HEV (high-energy visible) light..... <span style="color: #0000ff;"><a href="https://ambreyewear.com/pages/blue-light" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">READ MORE</a><br><br><a href="https://ambreyewear.com/pages/blue-light" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">More information from ambreyewear</a><br><br><span style="color: #000000;">-</span></span>
<h3 class="page-title" itemprop="name">
<a href="https://ambreyewear.com/pages/blue-light" target="_blank" style="color: #0000ff;" rel="noopener noreferrer"><span><strong></strong></span></a><span style="color: #0000ff;"><strong><a href="https://www.iflscience.com/health-and-medicine/nighttime-exposure-to-blue-light-could-encourage-sugary-snack-consumption-in-rats/?fbclid=IwAR0sd0okS2e1QzTeYdMW_rpfazJ_r7AeL7DkQQUOdvXx2vemXwelK8UGlac" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">RetinaGuard Anti Blue Light Tempered Glass Screen Protectors :</a></strong></span>
</h3>
<h3 class="page-title" itemprop="name"><span style="color: #0000ff;"><a href="https://www.iflscience.com/health-and-medicine/nighttime-exposure-to-blue-light-could-encourage-sugary-snack-consumption-in-rats/?fbclid=IwAR0sd0okS2e1QzTeYdMW_rpfazJ_r7AeL7DkQQUOdvXx2vemXwelK8UGlac" target="_blank" rel="noopener noreferrer" style="color: #0000ff;"><em><strong></strong></em></a><em><strong><a href="https://retinaguardstore.com/collections/iphone-8-iphone-8-plus-iphone-x/products/copy-of-anti-blue-light-tempered-glass-screen-protector-iphone-8-iphone-8-plus" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPhone XS</a> / <a href="https://retinaguardstore.com/collections/pet-iphone-x-xr-xs-xs-max/products/anti-blue-light-screen-protector-iphone-xs-max" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPhone XS MAX </a>/ <a href="https://retinaguardstore.com/collections/pet-iphone-x-xr-xs-xs-max/products/anti-blue-light-screen-protector-iphone-xr" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPhone XR</a> / </strong></em><em><strong><a href="https://retinaguardstore.com/collections/pet-iphone-x-xr-xs-xs-max/products/anti-blue-light-screen-protector-iphone-x" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPhone X</a></strong></em></span></h3>
<h3 class="page-title" itemprop="name"><span style="color: #0000ff;"><em><strong><a href="https://retinaguardstore.com/collections/iphone-8-iphone-8-plus-iphone-x/products/anti-blue-light-tempered-glass-screen-protector-iphone-8-iphone-8-plus" style="color: #0000ff;">iPhone 8 / iPhone 8 plus</a></strong></em></span></h3>
<h3 class="page-title" itemprop="name"><span style="color: #0000ff;"><em><strong><a href="https://retinaguardstore.com/collections/iphone-8-iphone-8-plus-iphone-x/products/anti-blue-light-tempered-glass-screen-protectors-for-iphone-5s-se-iphone-6s-iphone-6s-plus-iphone-7-iphone-7-plus" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPhone 7 / iPhone 7 plus</a></strong></em></span></h3>
<h3><span style="color: #0000ff;"><em><strong><a href="https://retinaguardstore.com/collections/iphone-8-iphone-8-plus-iphone-x/products/anti-blue-light-tempered-glass-screen-protectors-for-iphone-5s-se-iphone-6s-iphone-6s-plus-iphone-7-iphone-7-plus" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPhone 6 / iPhone 6 plus</a></strong></em></span></h3>
<h3><span style="color: #0000ff;"><em><strong><a href="https://retinaguardstore.com/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-pro" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPad pro</a>．<a href="https://retinaguardstore.com/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-air-air2" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPad air</a>． <a href="https://retinaguardstore.com/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-mini-mini2-mini3-mini4" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iPad mini</a></strong></em></span></h3>
<h3><span style="color: #0000ff;"><em><b><a href="https://retinaguardstore.com/collections/macbook-pro-15-13" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">Macbook Pro</a>．<a href="https://retinaguardstore.com/collections/macbook-air/products/anti-blue-light-screen-protector-macbook-air-13-2010-2015" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">Macbook Air</a>．<a href="https://retinaguardstore.com/collections/imac-21-5/products/anti-blue-light-screen-guard-protector-imac" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">iMac</a></b></em></span></h3>
<h3><span style="color: #0000ff;"><a href="https://retinaguardstore.com/collections/samsung" target="_blank" rel="noopener noreferrer" style="color: #0000ff;"><span color="#0000ff"><b><i>SAMSUNG</i></b></span></a><em><strong>．<a href="https://retinaguardstore.com/collections/htc" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">HTC</a></strong></em><em><strong>．<a href="https://retinaguardstore.com/collections/sony-1" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">SONY</a></strong></em><em><strong>．<a href="https://retinaguardstore.com/collections/asus" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">ASUS</a></strong></em><em><strong>．<a href="https://retinaguardstore.com/collections/lg" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">LG</a></strong></em><em><strong>．<a href="https://retinaguardstore.com/collections/xiaomi-1" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">Xiaomi</a></strong></em><em><strong>．<a href="https://retinaguardstore.com/collections/vehicles" target="_blank" rel="noopener noreferrer" style="color: #0000ff;">VEHICLES</a></strong></em></span></h3>
<p> </p>
</div>
</div>
</div>
</section>
</div>
</div>
</div></div>

       <div class="social-share block clearfix">
        

  <a class="glyph twitter" href="http://twitter.com/home?status=Check%20out%20this%20blog%20post:+https://retinaguard.com/blogs/news/what-is-blue-light"><span>Tweet</span></a>


  <a class="glyph facebook" href="http://www.facebook.com/sharer.php?u=https://retinaguard.com/blogs/news/what-is-blue-light&t="><span>Like</span></a>


  <a class="glyph pinterest" href="http://pinterest.com/pin/create/button/?url=https://retinaguard.com/blogs/news/what-is-blue-light&media=//retinaguard.com/cdn/shopifycloud/shopify/assets/no-image-2048-5e88c1b20e087fb7bbe9a3771824e743c244f437e4f8ba93bbf7b11b53f7824c_1024x1024.gif&description=" count-layout="none"><span>Pin</span></a>


  <a class="glyph tumblr" href="http://www.tumblr.com/share/link?url=https://retinaguard.com/blogs/news/what-is-blue-light"><span>Post</span></a>


  <a class="glyph googleplus" href="https://plus.google.com/share?url=https://retinaguard.com/blogs/news/what-is-blue-light" onclick="javascript:window.open(this.href,  '', 'menubar=no,toolbar=no,resizable=yes,scrollbars=yes,height=600,width=600');return false;"><span>Plus</span></a>

      </div>

      <!-- Begin comments -->
      
      <!-- End comments -->
    </div>
  </div>
    
  <!-- Begin sidebar -->
  <div class="side-bar columns large-3">
  <div class="divider"></div>
  <div class="recent-articles block clearfix colored-links">
    <h3 class="title">Recent Articles</h3>
    <ul>
      
      <li class="item">
        <a href="/blogs/news/what-happens-when-you-give-your-kids-unlimited-screen-time">What Happens When You Give Your Kids Unlimited Screen Time?</a> <br/><em>Posted on October 17, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/4-reasons-why-you-should-think-about-starting-a-digital-curfew">4 Reasons Why You Should Think About Starting a Digital Curfew</a> <br/><em>Posted on October 10, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/how-can-blue-light-affect-your-health">How Can Blue Light Affect Your Health?</a> <br/><em>Posted on October 04, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/implementing-digital-curfew">Implementing Digital Curfew</a> <br/><em>Posted on September 19, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/are-blue-lights-hurting-your-eyes">Are Blue Lights Hurting Your Eyes</a> <br/><em>Posted on September 15, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/tips-for-better-sleep-and-eye-health">Tips for Better Sleep and Eye Health</a> <br/><em>Posted on September 08, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/debunking-the-myths-about-digital-eyestrain-and-blue-light">Debunking The Myths About Digital Eyestrain And Blue Light</a> <br/><em>Posted on August 30, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/blue-lights-and-its-nighttime-exposure">Blue Lights and its Nighttime Exposure</a> <br/><em>Posted on August 23, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/blue-lights-disrupt-your-sleep-at-night-a-myth-or-not">Blue Lights Disrupt Your Sleep At Night: A Myth or Not?</a> <br/><em>Posted on August 15, 2022</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/could-blue-lights-exposure-affect-pregnancy">Could Blue Lights Exposure Affect Pregnancy?</a> <br/><em>Posted on August 08, 2022</em>
      </li>
      
    </ul>
  </div>

  <div class="tags block clearfix colored-links">
    
    <h3 class="title">Tags</h3>
    <ul>
      <li class="item active"><a href="https://retinaguard.com/blogs/news">All</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/apple" title="Narrow search to articles also having tag apple">apple</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/blue-light" title="Narrow search to articles also having tag blue light">blue light</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/blue-light" title="Narrow search to articles also having tag blue-light">blue-light</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/eyes" title="Narrow search to articles also having tag eyes">eyes</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/health-care" title="Narrow search to articles also having tag health care">health care</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/iphone" title="Narrow search to articles also having tag iphone">iphone</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/retinaguard" title="Narrow search to articles also having tag RetinaGuard">RetinaGuard</a></li>
      
      
      <li class="item"><a href="/blogs/news/tagged/screen-protector" title="Narrow search to articles also having tag screen protector">screen protector</a></li>
      
      
    </ul>
    
  </div>
</div>

  <!-- End sidebar -->
  
</div>

  </section>

  <footer class="main-footer">

    <div class="row bottom">
      <div class="column-1 large-4 columns">
        <h2 class="title">RetinaGuard Store</h2>
        <div class="content">
          <p class="text">Worldwide shipping<br />
- Free shipping on orders over  $35 ( US ONLY )<br />
<br />
LCW Fashion Limited (Taipei)<br />
support@retinaguard.com<br />
<br />
Copyright © 2019 RetinaGuard All rights reserved</p>
        </div>

      </div>
      <div class="column-2 large-4 columns">
        <h2 class="title">Info</h2>
        
        <div class="content">
          
          
          <ul class="footer-nav plain-list" role="navigation">
          
            <li><a href="/search" title="Search">Search</a></li>
          
            <li><a href="/pages/about-us" title="About Us">About Us</a></li>
          
            <li><a href="/pages/customer-service" title="Customer Service">Customer Service</a></li>
          
            <li><a href="/pages/track-order-status" title="Track Order Status">Track Order Status</a></li>
          
            <li><a href="/pages/contact-us" title="Contact us">Contact us</a></li>
          
          </ul>
          
        </div>

      </div>


      <div class="column-3 large-4 columns">
        
          
            <h2 class="title">Subscribe Newsletter</h2>
          

          <div class="content" id="mailing-list-module">
            

              <form method="post" action="/contact#contact_form" id="contact_form" accept-charset="UTF-8" class="contact-form"><input type="hidden" name="form_type" value="customer" /><input type="hidden" name="utf8" value="✓" />        
              
                     
            <input type="hidden" id="contact_tags" name="contact[tags]" value="newsletter" />
            <input type="hidden" id="newsletter-first-name" name="contact[first_name]" value="Subscriber" />
            <input type="hidden" id="newsletter-last-name" name="contact[last_name]" value="Newsletter" />

            <div class="row collapse">
              <div class="small-10 large-10 columns" style="padding-right: 10px;">
                <input type="email" placeholder="Your Email" name="contact[email]" />
              </div>
              <div class="small-2 large-2 columns">
                <input type="submit" class="button prefix" value="OK" name="subscribe" id="email-submit" />
              </div>
            </div>
            
            </form> 
            
          
          <div class="social-follow">
            <a title="Facebook" aria-hidden="true" target="_blank" class="glyph facebook" href="https://www.facebook.com/RetinaGuardexpert/"></a>
            
            
            <a title="Youtube" aria-hidden="true" target="_blank" class="glyph youtube" href="https://www.youtube.com/channel/UCiYIu5MgMAFAqw_WFy1ziBQ"></a>
            

          </div>
        </div> 
      </div>
    </div>

    <div class="row">
      <div class="columns">
         
          <ul class="payment-options">
            
            
            <li aria-hidden="true" class="glyph visa"></li>
            <li aria-hidden="true" class="glyph mastercard"></li>
            
            
            <li aria-hidden="true" class="glyph paypal"></li>
            
          </ul>
        
      </div>
    </div>
  </footer>

  <script src="//retinaguard.com/cdn/shop/t/37/assets/plugins.js?v=101110298713918317141421635182" type="text/javascript"></script>
  <script src="//retinaguard.com/cdn/shop/t/37/assets/shop.js?v=182837613790029778151421635183" type="text/javascript"></script>
  
  
<input type="hidden" name="_pc_params" value="retinaguard-store.myshopify.com:" />

 
<!-- Shopping cart -->

<div class="nosto_cart" style="display:none">

</div>

 
<!-- BEEKETINGSCRIPT CODE START --><!-- BEEKETINGSCRIPT CODE END -->

  
 <!-- Google 再营销代码 -->
<!--------------------------------------------------
再营销代码不得与个人身份信息相关联，也不得放置在与敏感类别相关的网页上。有关如何设置代码的详细信息和说明，请访问：http://google.com/ads/remarketingsetup
--------------------------------------------------->
<script type="text/javascript">
var google_tag_params = {
ecomm_prodid: 'REPLACE_WITH_VALUE',
ecomm_pagetype: 'REPLACE_WITH_VALUE',
ecomm_totalvalue: 'REPLACE_WITH_VALUE',
};
</script>
<script type="text/javascript">
/* <![CDATA[ */
var google_conversion_id = 937295644;
var google_custom_params = window.google_tag_params;
var google_remarketing_only = true;
/* ]]> */
</script>
<script type="text/javascript" src="//www.googleadservices.com/pagead/conversion.js">
</script>
<noscript>
<div style="display:inline;">
<img height="1" width="1" style="border-style:none;" alt="" src="//googleads.g.doubleclick.net/pagead/viewthroughconversion/937295644/?value=0&amp;guid=ON&amp;script=0"/>
</div>
</noscript>
  

<script>
    if(!window.PomFirstLoad){
        if(typeof(Spurit) === 'undefined'){
            var Spurit = {};
        }
        if(!Spurit.Preorder2){
            Spurit.Preorder2 = {};
        }
        if(!Spurit.Preorder2.snippet){
        Spurit.Preorder2.snippet = {};
        }
        if(!Spurit.Preorder2.snippet.products){
        Spurit.Preorder2.snippet.products = {};
        }
        Spurit.Preorder2.snippet.shopHash = '9145d9b08cb2dac00b59c009239dc1bd';
        Spurit.Preorder2.snippet.cacheTimestamp = 1698290891;

        if(typeof(Spurit.globalSnippet) === 'undefined'){
            Spurit.globalSnippet = {
                shop_currency: 'USD',
                money_format: '${{amount}}',
                cart: {"note":null,"attributes":{},"original_total_price":0,"total_price":0,"total_discount":0,"total_weight":0.0,"item_count":0,"items":[],"requires_shipping":false,"currency":"USD","items_subtotal_price":0,"cart_level_discount_applications":[],"checkout_charge_amount":0},
                customer_id: ''
            };
        }

        
    }
</script>

<script>
  (function() {
    setTimeout(() => document.querySelector('body').classList.add('spo-loaded'), 5000)
  })();
</script>

    <script>
        if(!window.PomFirstLoad){
            window.PomFirstLoad = true;
            let script = document.createElement("script");  // create a script DOM node
            script.src = "https://amaicdn.com/preorder2/common.js";  // set its src to the provided URL
            document.head.appendChild(script);
        }
    </script>


  <script src="" defer></script>
</body>

<div id="fb-root"></div>
<script>(function(d, s, id) {
  var js, fjs = d.getElementsByTagName(s)[0];
  if (d.getElementById(id)) return;
  js = d.createElement(s); js.id = id;
  js.src = "//connect.facebook.net/en_US/sdk.js#xfbml=1&version=v2.5";
  fjs.parentNode.insertBefore(js, fjs);
}(document, 'script', 'facebook-jssdk'));</script>

</html>