

  <!--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":"/blogs/news","title":"Blog","type":"blog_link","active":true},{"url":"/pages/instruction","title":"Instruction","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-x-xr-xs-xs-max-1","title":"iPhone 11 ‧ 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 8 ‧ 8 Plus","type":"collection_link","active":false},{"url":"/collections/pet-iphone-7-7-plus","title":"iPhone 7 ‧ 7 Plus","type":"collection_link","active":false},{"url":"/collections/iphones-6-plus-6","title":"iPhone 6 ‧ 6 Plus / 6S ‧ 6S Plus","type":"collection_link","active":false},{"url":"/collections/iphone-5s-5c-5","title":"iPhone 5 ‧ 5C ‧ 5S","type":"collection_link","active":false},{"url":"/collections/iphone-4s-4","title":"iPhone 4 ‧ 4S","type":"collection_link","active":false},{"url":"/collections/nintendo-switch","title":"Nintendo Switch","type":"collection_link","active":false}]},{"handle":"ipads","title":"iPads","links":[{"url":"/collections/2019-ipad","title":"2019 iPad 10.2"","type":"collection_link","active":false},{"url":"/collections/ipad-pro","title":"2018 iPad Pro ","type":"collection_link","active":false},{"url":"/collections/ipad-air","title":"iPad Air ‧ Air 2 ‧ Air 3","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},{"url":"/collections/imac-21-5","title":"iMac 21.5"","type":"collection_link","active":false}]},{"handle":"other-devices","title":"Main menu>ANTI-BLUE LIGHT SCREEN PROTECTORS>Other devices","links":[{"url":"/products/anti-blue-light-screen-protector-surface-pro-6-12-3","title":"SURFACE PRO 6 - 12.3"","type":"product_link","active":false},{"url":"/collections/samsung","title":"SAMSUNG","type":"collection_link","active":false},{"url":"/collections/vehicles","title":"VEHICLES","type":"collection_link","active":false},{"url":"/collections/htc","title":"HTC","type":"collection_link","active":false},{"url":"/collections/sony-1","title":"SONY","type":"collection_link","active":false},{"url":"/collections/asus","title":"ASUS","type":"collection_link","active":false},{"url":"/collections/lg","title":"LG","type":"collection_link","active":false},{"url":"/collections/xiaomi-1","title":"Xiaomi","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":"/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max","title":"iPhone 11 ‧ 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 8 ‧ 8 Plus","type":"collection_link","active":false},{"url":"/collections/iphone-7-7-pluss","title":"iPhone 7 ‧ 7 Plus","type":"collection_link","active":false},{"url":"/collections/tempered-glass-screen-protector-1","title":"iPhone 6 ‧ 6 Plus / 6S ‧ 6S Plus","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-iphone-5-5s","title":"iPhone 5 ‧ 5C ‧ 5S","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-2019-ipad","title":"2019 iPad 10.2"","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-pro","title":"iPad Pro 9.7" / 10.5" / 12.9"","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-air-air2","title":"2019 iPad Air 3 / Air 2 / 2017 iPad","type":"collection_link","active":false},{"url":"/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-mini-mini2-mini3-mini4","title":"2019 iPad mini 5 / iPad mini 4 / mini 3, 2 & 1","type":"collection_link","active":false},{"url":"/collections/nintendo-switch","title":"Nintendo Switch","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},{"url":"#","title":"Android","type":"http_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>Blue lights affect not only your vision but also the quality of your s</title>
<meta name='description' content='    Now you can find RetinaGuard anti- blue light screen protectorson Amazon US！' /> 
<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\/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep",
		"mainEntityOfPage": "https:\/\/retinaguard.com\/blogs\/news\/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep",
		"name": "Blue lights affect not only your vision but also the quality of your sleep.",
		"headline": "Blue lights affect not only your vision but also the quality of your sleep.",
		"author": {
			"@type": "Person",
			"name": "William Chen"
		},
		"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": "2016-07-29 15:16:47 +0800",
				"dateModified": "2016-07-29 15:16:00 +0800",
				"description": "\n\n\n\n\n\n\n\n\n\n\n    Now you can find RetinaGuard anti- blue light screen protectorson Amazon US！\n",
				"articleBody": "\n\n\n\n\n\n\n\n\n\n\n    Now you can find RetinaGuard anti- blue light screen protectorson Amazon US！\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="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/favicon.png?v=10452524685309501832" />
  

  <link rel="canonical" href="https://retinaguard.com/blogs/news/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep" />
  
  
  <meta property="og:url" content="https://retinaguard.com/blogs/news/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep" />
  <meta property="og:title" content="Blue lights affect not only your vision but also the quality of your sleep." />
  <meta property="og:description" content="


    Now you can find RetinaGuard anti- blue light screen protectorson Amazon US！
" />
  

<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" />
<link href="https://v.shopify.com" rel="dns-prefetch">
<link href="https://monorail-edge.shopifysvc.com" rel="dns-prefetch">
<style media="all">.additional-checkout-button{border:0 !important;border-radius:5px !important;display:inline-block;margin:0 0 10px;padding:0 24px !important;max-width:100%;min-width:150px !important;line-height:44px !important;text-align:center !important}.additional-checkout-button+.additional-checkout-button{margin-left:10px}.additional-checkout-button:last-child{margin-bottom:0}.additional-checkout-button span{font-size:14px !important}.additional-checkout-button img{display:inline-block !important;height:1.3em !important;margin:0 !important;vertical-align:middle !important;width:auto !important}@media (max-width: 500px){.additional-checkout-button{display:block;margin-left:0 !important;padding:0 10px !important;width:100%}}.additional-checkout-button--apple-pay{background-color:#000 !important;color:#fff !important;display:none;font-family:-apple-system, Helvetica Neue, sans-serif !important;min-width:150px !important;white-space:nowrap !important}.additional-checkout-button--apple-pay:hover,.additional-checkout-button--apple-pay:active,.additional-checkout-button--apple-pay:visited{color:#fff !important;text-decoration:none !important}.additional-checkout-button--apple-pay .additional-checkout-button__logo{background:-webkit-named-image(apple-pay-logo-white) center center no-repeat !important;background-size:auto 100% !important;display:inline-block !important;vertical-align:middle !important;width:3em !important;height:1.3em !important}@media (max-width: 500px){.additional-checkout-button--apple-pay{display:none}}.additional-checkout-button--google-pay{line-height:0 !important;padding:0 !important;border-radius:unset !important;width:80px !important}@media (max-width: 500px){.additional-checkout-button--google-pay{width:100% !important}}.gpay-iframe{height:44px !important;width:100%  !important;cursor:pointer;vertical-align:middle !important}.additional-checkout-button--paypal-express{background-color:#ffc439 !important}.additional-checkout-button--paypal,.additional-checkout-button--venmo{vertical-align:top;line-height:0 !important;padding:0 !important}.additional-checkout-button--amazon{background-color:#fad676 !important;position:relative !important}.additional-checkout-button--amazon .additional-checkout-button__logo{-webkit-transform:translateY(4px) !important;transform:translateY(4px) !important}.additional-checkout-button--amazon .alt-payment-list-amazon-button-image{max-height:none !important;opacity:0 !important;position:absolute !important;top:0 !important;left:0 !important;width:100% !important;height:100% !important}.additional-checkout-button-visually-hidden{border:0 !important;clip:rect(0, 0, 0, 0) !important;clip:rect(0 0 0 0) !important;width:1px !important;height:1px !important;margin:-2px !important;overflow:hidden !important;padding:0 !important;position:absolute !important}
</style>
<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:\/\/cdn.shopify.com\/shopifycloud\/payment-sheet\/assets\/latest\/spb.en.js","dynamic_checkout_cart_url":"https:\/\/cdn.shopify.com\/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.theme = {"name":"Blockshop","id":12322459,"theme_store_id":null,"role":"main"};
Shopify.theme.handle = "null";
Shopify.theme.style = {"id":null,"handle":null};</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>(function() {
  function asyncLoad() {
    var urls = ["\/\/productreviews.shopifycdn.com\/assets\/v4\/spr.js?shop=retinaguard-store.myshopify.com","\/\/www.powr.io\/powr.js?powr-token=retinaguard-store.myshopify.com\u0026external-type=shopify\u0026shop=retinaguard-store.myshopify.com","https:\/\/s3.amazonaws.com\/lastsecondcoupon\/js\/quickannouncementbar.js?shop=retinaguard-store.myshopify.com","https:\/\/s3.amazonaws.com\/lastsecondcoupon\/js\/freeshippingbar.js?shop=retinaguard-store.myshopify.com","\/\/d2so4705rl485y.cloudfront.net\/widgets\/tracker\/tracker.js?shop=retinaguard-store.myshopify.com","\/\/d2so4705rl485y.cloudfront.net\/widgets\/tracker\/tracker.js?shop=retinaguard-store.myshopify.com","https:\/\/s3.amazonaws.com\/maxeffi\/persistent-cart\/retinaguard-store.myshopify.com\/app.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.swellrewards.com\/loader\/u_ayi6tQrE-ZA7o_lOIkyA.js?shop=retinaguard-store.myshopify.com","https:\/\/tracking.finditquick.com\/retargeting_init.php?account=21676\u0026shop=retinaguard-store.myshopify.com","https:\/\/www.improvedcontactform.com\/icf.js?shop=retinaguard-store.myshopify.com","\/\/cdn.codeblackbelt.com\/js\/modules\/currency-converter-plus\/main.min.js?shop=retinaguard-store.myshopify.com","https:\/\/app.retargetapp.com\/pixel\/pixel.min.js?catalog_id=218298818589774\u0026pixel_id=246084436077711\u0026shop=retinaguard-store.myshopify.com","https:\/\/c.retargetapp.com\/pixel.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":"adbaa699-171c-4260-ba22-cfade536bff1","pageurl":"retinaguard.com\/blogs\/news\/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep","s":"articles-142617731","u":"acc90973cc92","p":"article","rtyp":"article","rid":142617731};</script>
<script>window.ShopifyPaypalV4VisibilityTracking = true;</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":142617731}};
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 isDuplicatedThankYouPageView = function() {
    return document.cookie.indexOf('loggedConversion=' + window.location.pathname) !== -1;
  }

  var setCookieIfThankYouPage = function() {
    if (window.location.pathname.indexOf('/checkouts') !== -1 &&
        window.location.pathname.indexOf('/thank_you') !== -1) {

      var twoMonthsFromNow = new Date(Date.now());
      twoMonthsFromNow.setMonth(twoMonthsFromNow.getMonth() + 2);

      document.cookie = 'loggedConversion=' + window.location.pathname + '; 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;
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.onerror = function(e) {
      (new Image()).src = '//v.shopify.com/internal_errors/track?error=trekkie_load';
    };
    script.async = true;
    script.src = 'https://cdn.shopify.com/s/javascripts/tricorder/trekkie.storefront.min.js?v=2019.11.04.1';
    var first = document.getElementsByTagName('script')[0];
    first.parentNode.insertBefore(script, first);
  };
  trekkie.load(
    {"Trekkie":{"appName":"storefront","development":false,"defaultAttributes":{"shopId":6820971,"isMerchantRequest":null,"themeId":12322459,"themeCityHash":"16964535872908169073","contentLanguage":"en","currency":"USD"}},"Performance":{"navigationTimingApiMeasurementsEnabled":true,"navigationTimingApiMeasurementsSampleRate":1},"Google Analytics":{"trackingId":"UA-79166586-1","domain":"auto","siteSpeedSampleRate":"10","enhancedEcommerce":true,"doubleClick":true,"includeSearch":true},"Facebook Pixel":{"pixelIds":["184133892200458"],"agent":"plshopify1.2"},"Session Attribution":{}}
  );

  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;
      (function () {
        if (window.BOOMR && (window.BOOMR.version || window.BOOMR.snippetExecuted)) {
          return;
        }
        window.BOOMR = window.BOOMR || {};
        window.BOOMR.snippetStart = new Date().getTime();
        window.BOOMR.snippetExecuted = true;
        window.BOOMR.snippetVersion = 12;
        window.BOOMR.application = "core";
        window.BOOMR.shopId = 6820971;
        window.BOOMR.themeId = 12322459;
        window.BOOMR.url =
          "https://cdn.shopify.com/shopifycloud/boomerang/shopify-boomerang-1.0.0.min.js";
        var where = document.currentScript || document.getElementsByTagName("script")[0];
        var parentNode = where.parentNode;
        var promoted = false;
        var LOADER_TIMEOUT = 3000;
        function promote() {
          if (promoted) {
            return;
          }
          var script = document.createElement("script");
          script.id = "boomr-scr-as";
          script.src = window.BOOMR.url;
          script.async = true;
          parentNode.appendChild(script);
          promoted = true;
        }
        function iframeLoader(wasFallback) {
          promoted = true;
          var dom, bootstrap, iframe, iframeStyle;
          var doc = document;
          var win = window;
          window.BOOMR.snippetMethod = wasFallback ? "if" : "i";
          bootstrap = function(parent, scriptId) {
            var script = doc.createElement("script");
            script.id = scriptId || "boomr-if-as";
            script.src = window.BOOMR.url;
            BOOMR_lstart = new Date().getTime();
            parent = parent || doc.body;
            parent.appendChild(script);
          };
          if (!window.addEventListener && window.attachEvent && navigator.userAgent.match(/MSIE [67]./)) {
            window.BOOMR.snippetMethod = "s";
            bootstrap(parentNode, "boomr-async");
            return;
          }
          iframe = document.createElement("IFRAME");
          iframe.src = "about:blank";
          iframe.title = "";
          iframe.role = "presentation";
          iframe.loading = "eager";
          iframeStyle = (iframe.frameElement || iframe).style;
          iframeStyle.width = 0;
          iframeStyle.height = 0;
          iframeStyle.border = 0;
          iframeStyle.display = "none";
          parentNode.appendChild(iframe);
          try {
            win = iframe.contentWindow;
            doc = win.document.open();
          } catch (e) {
            dom = document.domain;
            iframe.src = "javascript:var d=document.open();d.domain='" + dom + "';void(0);";
            win = iframe.contentWindow;
            doc = win.document.open();
          }
          if (dom) {
            doc._boomrl = function() {
              this.domain = dom;
              bootstrap();
            };
            doc.write("<body onload='document._boomrl();'>");
          } else {
            win._boomrl = function() {
              bootstrap();
            };
            if (win.addEventListener) {
              win.addEventListener("load", win._boomrl, false);
            } else if (win.attachEvent) {
              win.attachEvent("onload", win._boomrl);
            }
          }
          doc.close();
        }
        var link = document.createElement("link");
        if (link.relList &&
          typeof link.relList.supports === "function" &&
          link.relList.supports("preload") &&
          ("as" in link)) {
          window.BOOMR.snippetMethod = "p";
          link.href = window.BOOMR.url;
          link.rel = "preload";
          link.as = "script";
          link.addEventListener("load", promote);
          link.addEventListener("error", function() {
            iframeLoader(true);
          });
          setTimeout(function() {
            if (!promoted) {
              iframeLoader(true);
            }
          }, LOADER_TIMEOUT);
          BOOMR_lstart = new Date().getTime();
          parentNode.appendChild(link);
        } else {
          iframeLoader(false);
        }
        function boomerangSaveLoadTime(e) {
          window.BOOMR_onload = (e && e.timeStamp) || new Date().getTime();
        }
        if (window.addEventListener) {
          window.addEventListener("load", boomerangSaveLoadTime, false);
        } else if (window.attachEvent) {
          window.attachEvent("onload", boomerangSaveLoadTime);
        }
        if (document.addEventListener) {
          document.addEventListener("onBoomerangLoaded", function(e) {
            e.detail.BOOMR.init({});
            e.detail.BOOMR.t_end = new Date().getTime();
          });
        } else if (document.attachEvent) {
          document.attachEvent("onpropertychange", function(e) {
            if (!e) e=event;
            if (e.propertyName === "onBoomerangLoaded") {
              e.detail.BOOMR.init({});
              e.detail.BOOMR.t_end = new Date().getTime();
            }
          });
        }
      })();
    

    if (!isDuplicatedThankYouPageView()) {
      setCookieIfThankYouPage();
      
        window.ShopifyAnalytics.lib.page(
          null,
          {"pageType":"article","resourceType":"article","resourceId":142617731}
        );
      
      
    }
  });

  
      var eventsListenerScript = document.createElement('script');
      eventsListenerScript.async = true;
      eventsListenerScript.src = "//cdn.shopify.com/s/assets/shop_events_listener-2c6237918c4bbec8783d8ceecd5759edc38afa9b5bef55134462710955517539.js";
      document.getElementsByTagName('head')[0].appendChild(eventsListenerScript);
    
})();</script>
<script integrity="sha256-f6FFDo+K6xVN2lCe7Gwex/21wPD5ADi++haIzgy99/U=" crossorigin="anonymous" data-source-attribution="shopify.loadfeatures" defer="defer" src="//cdn.shopify.com/s/assets/storefront/load_feature-7fa1450e8f8aeb154dda509eec6c1ec7fdb5c0f0f90038befa1688ce0cbdf7f5.js"></script>
<script integrity="sha256-EYppj7RbseKnaugbP4EJXR4sMs7TPdTpPmQ3i163eNA=" data-source-attribution="shopify.dynamic-checkout" defer="defer" src="//cdn.shopify.com/s/assets/storefront/features-118a698fb45bb1e2a76ae81b3f81095d1e2c32ced33dd4e93e64378b5eb778d0.js" crossorigin="anonymous"></script>
<script defer="defer" src="//cdn.shopify.com/s/assets/themes_support/ga_urchin_forms-99e991855b3d8ddc69e625c68ab0579dd9927b611c2ec4943d396c72e3af0849.js"></script>


<style id="shopify-dynamic-checkout-cart">@media screen and (min-width: 750px) {
  #dynamic-checkout-cart {
    min-height: 50px;
  }
}

@media screen and (max-width: 750px) {
  #dynamic-checkout-cart {
    min-height: 60px;
  }
}
</style><script>window.performance && window.performance.mark && window.performance.mark('shopify.content_for_header.end');</script>

  <link href="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/style.css?v=12585615050070255173" rel="stylesheet" type="text/css" media="all" />

  <!--[if lt IE 8]>
    <script src="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/json2.js?v=15413385735086865350" 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="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/dd_roundies.js?v=7511706476431266452" type="text/javascript"></script>
  <script>
  DD_roundies.addRule('.circle', '45px');
  </script>
  <![endif]-->

  <script src="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/custom.modernizr.js?v=4433173860872892820" 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="//cdn.shopify.com/s/assets/themes_support/api.jquery-e94e010e92e659b566dbc436fdfe5242764380e00398907a14955ba301a4749f.js" type="text/javascript"></script>
  <script src="//cdn.shopify.com/s/assets/themes_support/option_selection-fe6b72c2bbdd3369ac0bfefe8648e3c889efca213baefd4cfb0dd9363563831f.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/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep" >
  </head>


<body class="page-blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-s 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="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/checkout_logo_image.png?v=14028102139995117148" data-retina="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/logo-retina.png?v=5318353299765536853" 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-x-xr-xs-xs-max-1" title="">iPhone 11 ‧ 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 8 ‧ 8 Plus</a></li>
                        
                           <li><a href="/collections/pet-iphone-7-7-plus" title="">iPhone 7 ‧ 7 Plus</a></li>
                        
                           <li><a href="/collections/iphones-6-plus-6" title="">iPhone 6 ‧ 6 Plus / 6S ‧ 6S Plus</a></li>
                        
                           <li><a href="/collections/iphone-5s-5c-5" title="">iPhone 5 ‧ 5C ‧ 5S</a></li>
                        
                           <li><a href="/collections/iphone-4s-4" title="">iPhone 4 ‧ 4S</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/2019-ipad" title="">2019 iPad 10.2"</a></li>
                        
                           <li><a href="/collections/ipad-pro" title="">2018 iPad Pro </a></li>
                        
                           <li><a href="/collections/ipad-air" title="">iPad Air ‧ Air 2 ‧ Air 3</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>
                        
                           <li><a href="/collections/imac-21-5" title="">iMac 21.5"</a></li>
                        
                      </ul>
                    </div>
                  

                    <div class="columns large-3">
                      
                        <h3 class="title">Android</h3>
                      
                      <ul>
                        
                           <li><a href="/products/anti-blue-light-screen-protector-surface-pro-6-12-3" title="">SURFACE PRO 6 - 12.3"</a></li>
                        
                           <li><a href="/collections/samsung" title="">SAMSUNG</a></li>
                        
                           <li><a href="/collections/vehicles" title="">VEHICLES</a></li>
                        
                           <li><a href="/collections/htc" title="">HTC</a></li>
                        
                           <li><a href="/collections/sony-1" title="">SONY</a></li>
                        
                           <li><a href="/collections/asus" title="">ASUS</a></li>
                        
                           <li><a href="/collections/lg" title="">LG</a></li>
                        
                           <li><a href="/collections/xiaomi-1" title="">Xiaomi</a></li>
                        
                      </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="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max" title="">iPhone 11 ‧ 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 8 ‧ 8 Plus</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/iphone-7-7-pluss" title="">iPhone 7 ‧ 7 Plus</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/tempered-glass-screen-protector-1" title="">iPhone 6 ‧ 6 Plus / 6S ‧ 6S Plus</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-iphone-5-5s" title="">iPhone 5 ‧ 5C ‧ 5S</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-2019-ipad" title="">2019 iPad 10.2"</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-pro" title="">iPad Pro 9.7" / 10.5" / 12.9"</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-air-air2" title="">2019 iPad Air 3 / Air 2 / 2017 iPad</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-mini-mini2-mini3-mini4" title="">2019 iPad mini 5 / iPad mini 4 / mini 3, 2 & 1</a></li>
                      
                        <li class="sub-nav-item"><a href="/collections/nintendo-switch" title="">Nintendo Switch</a></li>
                      
                      </ul>
                    </div>
                  </li>
                </ul>
            </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">
                Instruction
              </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-x-xr-xs-xs-max-1" title="">iPhone 11 ‧ 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 8 ‧ 8 Plus</a></li>
                      
                         <li><a href="/collections/pet-iphone-7-7-plus" title="">iPhone 7 ‧ 7 Plus</a></li>
                      
                         <li><a href="/collections/iphones-6-plus-6" title="">iPhone 6 ‧ 6 Plus / 6S ‧ 6S Plus</a></li>
                      
                         <li><a href="/collections/iphone-5s-5c-5" title="">iPhone 5 ‧ 5C ‧ 5S</a></li>
                      
                         <li><a href="/collections/iphone-4s-4" title="">iPhone 4 ‧ 4S</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/2019-ipad" title="">2019 iPad 10.2"</a></li>
                      
                         <li><a href="/collections/ipad-pro" title="">2018 iPad Pro </a></li>
                      
                         <li><a href="/collections/ipad-air" title="">iPad Air ‧ Air 2 ‧ Air 3</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>
                      
                         <li><a href="/collections/imac-21-5" title="">iMac 21.5"</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>
                      
                         <li><a href="/products/anti-blue-light-screen-protector-surface-pro-6-12-3" title="">SURFACE PRO 6 - 12.3"</a></li>
                      
                         <li><a href="/collections/samsung" title="">SAMSUNG</a></li>
                      
                         <li><a href="/collections/vehicles" title="">VEHICLES</a></li>
                      
                         <li><a href="/collections/htc" title="">HTC</a></li>
                      
                         <li><a href="/collections/sony-1" title="">SONY</a></li>
                      
                         <li><a href="/collections/asus" title="">ASUS</a></li>
                      
                         <li><a href="/collections/lg" title="">LG</a></li>
                      
                         <li><a href="/collections/xiaomi-1" title="">Xiaomi</a></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="/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max" title="">iPhone 11 ‧ 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 8 ‧ 8 Plus</a></li>
              
                <li class="sub-nav-item"><a href="/collections/iphone-7-7-pluss" title="">iPhone 7 ‧ 7 Plus</a></li>
              
                <li class="sub-nav-item"><a href="/collections/tempered-glass-screen-protector-1" title="">iPhone 6 ‧ 6 Plus / 6S ‧ 6S Plus</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-iphone-5-5s" title="">iPhone 5 ‧ 5C ‧ 5S</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-2019-ipad" title="">2019 iPad 10.2"</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-pro" title="">iPad Pro 9.7" / 10.5" / 12.9"</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-air-air2" title="">2019 iPad Air 3 / Air 2 / 2017 iPad</a></li>
              
                <li class="sub-nav-item"><a href="/collections/anti-blue-light-tempered-glass-screen-protector-for-ipad-mini-mini2-mini3-mini4" title="">2019 iPad mini 5 / iPad mini 4 / mini 3, 2 & 1</a></li>
              
                <li class="sub-nav-item"><a href="/collections/nintendo-switch" title="">Nintendo Switch</a></li>
              
            </ul>
          </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">
              Instruction
            </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>Blue lights affect not only your vision but also the quality of your sleep.</li>
         
</ul>
  </div> 
</div>

<div class="previous-next row">
  <div class="previous columns large-2 small-6">
    
      
      <span class="left"><a href="/blogs/news/napping-is-good-for-our-heart-blood-pressure-and-eyes" 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/how-blue-light-affects-our-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">July 29 2016</p>
      </div>
        
      <div class="author block">
        <h3 class="title">Written By</h3>
        <p class="content">William Chen</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/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep">Blue lights affect not only your vision but also the quality of your sleep.</a></h1>
      <p class="mobile-meta show-for-medium-down">
        Written by William Chen - July 29 2016
      </p>
      <div class="content colored-links rte-content"><div style="text-align: center;"><iframe src="https://www.facebook.com/plugins/video.php?href=https%3A%2F%2Fwww.facebook.com%2FRetinaGuardexpert%2Fvideos%2F824949680938670%2F&amp;show_text=0&amp;width=560" width="560" height="315" style="border: none; overflow: hidden;" scrolling="no" frameborder="0" allowtransparency="true" allowfullscreen="true"></iframe></div>
<div style="text-align: center;"></div>
<div style="text-align: left;"><meta charset="utf-8"></div>
<div style="text-align: left;">
<meta charset="utf-8">
<span><span></span></span>
</div>
<div style="text-align: left;"><span><span></span></span></div>
<div style="text-align: left;"><span><span></span></span></div>
<div style="text-align: left;"><span><span></span></span></div>
<div style="text-align: left;"><span><span></span></span></div>
<div style="text-align: left;"><span>  <br>  <br>Now you can find RetinaGuard anti- blue light screen protectors<br>on <a href="https://www.amazon.com/s/ref=nb_sb_noss_2?url=search-alias%3Daps&amp;field-keywords=RetinaGuard" target="_blank">Amazon US</a>！</span></div>
<div style="text-align: left;"><span><span></span></span></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/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep"><span>Tweet</span></a>


  <a class="glyph facebook" href="http://www.facebook.com/sharer.php?u=https://retinaguard.com/blogs/news/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep&t="><span>Like</span></a>


  <a class="glyph pinterest" href="http://pinterest.com/pin/create/button/?url=https://retinaguard.com/blogs/news/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep&media=//cdn.shopify.com/s/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/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep"><span>Post</span></a>


  <a class="glyph googleplus" href="https://plus.google.com/share?url=https://retinaguard.com/blogs/news/blue-lights-affect-not-only-your-vision-but-also-the-quality-of-your-sleep" 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/10-health-benefits-and-uses-for-turmeric-curcumin-supplements">10 Health Benefits and Uses for Turmeric Curcumin Supplements</a> <br/><em>Posted on March 25, 2020</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/how-blue-light-could-damage-cells-in-your-eyes">How Blue Light Could Damage Cells In Your Eyes</a> <br/><em>Posted on December 27, 2019</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/blue-light-and-your-eyes">Blue Light and Your Eyes</a> <br/><em>Posted on November 25, 2019</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/what-is-blue-light">What is Blue Light?</a> <br/><em>Posted on October 03, 2019</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/how-does-screen-time-affect-your-brain-anxiety-overall-health">How Does Screen Time Affect Your Brain, Anxiety & Overall Health?</a> <br/><em>Posted on September 17, 2019</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/nighttime-exposure-to-blue-light-could-encourage-sugary-snack-consumption-in-rats">Nighttime Exposure To Blue Light Could Encourage Sugary Snack Consumption (In Rats)</a> <br/><em>Posted on July 15, 2019</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/will-blue-light-from-electronic-devices-increase-my-risk-of-macular-degeneration-and-blindness">Will blue light from electronic devices increase my risk of macular degeneration and blindness?</a> <br/><em>Posted on May 24, 2019</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/blue-light-is-there-risk-of-harm">Blue Light – Is there risk of harm?</a> <br/><em>Posted on January 03, 2019</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/q-a-why-is-blue-light-before-bedtime-bad-for-sleep">Q&A: Why Is Blue Light before Bedtime Bad for Sleep?</a> <br/><em>Posted on December 25, 2018</em>
      </li>
      
      <li class="item">
        <a href="/blogs/news/how-blue-light-exposure-late-at-night-sets-you-up-for-disease">How blue light exposure late at night sets you up for disease</a> <br/><em>Posted on December 06, 2018</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/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>
      
      
    </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 )<br />
- Free shipping on orders over  £35 ( UK )<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="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/plugins.js?v=10111029871391831714" type="text/javascript"></script>
  <script src="//cdn.shopify.com/s/files/1/0682/0971/t/37/assets/shop.js?v=18283761379002977815" 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 src="//cdn.codeblackbelt.com/js/modules/currency-converter-plus/main.min.js?shop=retinaguard-store.myshopify.com"></script>
<script>
    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 = 1584444198;

    if(typeof(Spurit.globalSnippet) === 'undefined'){
        Spurit.globalSnippet = {
            shop_currency: 'USD',
            money_format: '${{amount}}',
            cart: {"token":"29a6bb0925e82c795bdf72b2463e4575","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":[]},
            customer_id: ''
        };
    }

    
</script>

<style> /* Safely hide ATC button */
    body:not(.spo-loaded) [data-shopify="payment-button"], 
body:not(.spo-loaded).template-product form[action="/cart/add"] [type=submit], 
body:not(.spo-loaded).template-collection form[action="/cart/add"] [type=submit], 
body:not(.spo-loaded).template-index form[action="/cart/add"] [type=submit], 
body:not(.spo-loaded) form[action="/cart/add"] [type=submit] {opacity: 0; pointer-events: none}
    body:not(.spo-loaded) form[action^="/cart"]:not([action^="/cart/add"]):not(#currency_form) button, 
body:not(.spo-loaded) form[action^="/cart"]:not([action^="/cart/add"]):not(#currency_form) input[type="submit"], 
body:not(.spo-loaded) form[action^="/cart"]:not([action^="/cart/add"]):not(#currency_form) input[type="button"], 
body:not(.spo-loaded) [name="checkout"], 
body:not(.spo-loaded) [name="goto_pp"], 
body:not(.spo-loaded) [name="goto_amazon_payments"] {opacity: 0; pointer-events: none}
</style>
<noscript>
    <style> /* if no javascript: get back ATC button */
        body:not(.spo-loaded) [data-shopify="payment-button"], 
body:not(.spo-loaded).template-product form[action="/cart/add"] [type=submit], 
body:not(.spo-loaded).template-collection form[action="/cart/add"] [type=submit], 
body:not(.spo-loaded).template-index form[action="/cart/add"] [type=submit], 
body:not(.spo-loaded) form[action="/cart/add"] [type=submit] {opacity: 1; pointer-events: all}
        body:not(.spo-loaded) form[action^="/cart"]:not([action^="/cart/add"]):not(#currency_form) button, 
body:not(.spo-loaded) form[action^="/cart"]:not([action^="/cart/add"]):not(#currency_form) input[type="submit"], 
body:not(.spo-loaded) form[action^="/cart"]:not([action^="/cart/add"]):not(#currency_form) input[type="button"], 
body:not(.spo-loaded) [name="checkout"], 
body:not(.spo-loaded) [name="goto_pp"], 
body:not(.spo-loaded) [name="goto_amazon_payments"] {opacity: 1; pointer-events: all}
    </style>
</noscript>
<script>
  (function() {
    setTimeout(() => document.querySelector('body').classList.add('spo-loaded'), 5000)
  })();
</script>

    <script src="https://cdn-preorder.com/preorder2/common.js"></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>