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<title>Blue Light and Your Eyes</title>
<meta name='description' content='What is Blue Light? Current understanding of the effects of blue light from digital device screens on your sight or your child&#39;s sight Sunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength. ' /> 
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				"datePublished": "2019-11-25 11:41:00 +0800",
				"dateModified": "2019-11-25 11:41:00 +0800",
				"description": "\n\n\n\nWhat is Blue Light?\n\nCurrent understanding of the effects of blue light from digital device screens on your sight or your child's sight\nSunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength. Rays on the red end have longer wavelengths and less energy. On the other end, blue rays have shorter wavelengths and more energy. Light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from the blue end of the spectrum.\n\n\n\n\n\n\n\n\n\nWhere Are You Exposed to Blue Light?\n\n\nThe largest source of blue light is sunlight. In addition, there are many other sources:\n\nFluorescent light\nCFL (compact fluorescent light) bulbs\nLED light\nFlat screen LED televisions\nComputer monitors, smart phones, and tablet screens\n\nBlue light exposure you receive from screens is small compared to the amount of exposure from the sun.  And yet, there is concern over the long-term effects of screen exposure because of the close proximity of the screens and the length of time spent looking at them. According to a recent NEI-funded study, children’s eyes absorb more blue light than adults from digital device screens.\nRelated link:http:\/\/www.ncbi.nlm.nih.gov\/pubmed\/21600300?report=abstract\n\n\n\n\n\n\nWhat Are The Benefits of Blue Light?\n\n\nBlue light is needed for good health.....Read More\n\n\n\nMore information from www.preventblindness.org\/\nRetinaGuard Anti Blue Light Tempered Glass Screen Protectors :\niPhone 11 \/ iPhone 11 Pro \/ iPhone 11 Pro Max\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",
				"articleBody": "\n\n\n\nWhat is Blue Light?\n\nCurrent understanding of the effects of blue light from digital device screens on your sight or your child's sight\nSunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength. Rays on the red end have longer wavelengths and less energy. On the other end, blue rays have shorter wavelengths and more energy. Light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from the blue end of the spectrum.\n\n\n\n\n\n\n\n\n\nWhere Are You Exposed to Blue Light?\n\n\nThe largest source of blue light is sunlight. In addition, there are many other sources:\n\nFluorescent light\nCFL (compact fluorescent light) bulbs\nLED light\nFlat screen LED televisions\nComputer monitors, smart phones, and tablet screens\n\nBlue light exposure you receive from screens is small compared to the amount of exposure from the sun.  And yet, there is concern over the long-term effects of screen exposure because of the close proximity of the screens and the length of time spent looking at them. According to a recent NEI-funded study, children’s eyes absorb more blue light than adults from digital device screens.\nRelated link:http:\/\/www.ncbi.nlm.nih.gov\/pubmed\/21600300?report=abstract\n\n\n\n\n\n\nWhat Are The Benefits of Blue Light?\n\n\nBlue light is needed for good health.....Read More\n\n\n\nMore information from www.preventblindness.org\/\nRetinaGuard Anti Blue Light Tempered Glass Screen Protectors :\niPhone 11 \/ iPhone 11 Pro \/ iPhone 11 Pro Max\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"
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  <meta property="og:description" content="What is Blue Light? Current understanding of the effects of blue light from digital device screens on your sight or your child&#39;s sight Sunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength. Rays on the red end have longer wavelengths and less energy. On the other end, blue rays have shorter wavelengths and more energy. Light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from" />
  
    
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.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>
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        <h3 class="title">Date</h3>
        <p class="content">November 25 2019</p>
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        <h3 class="title">Written By</h3>
        <p class="content">Heidi Green</p>
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      <h1 class="title"><a href="/blogs/news/blue-light-and-your-eyes">Blue Light and Your Eyes</a></h1>
      <p class="mobile-meta show-for-medium-down">
        Written by Heidi Green - November 25 2019
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<h3>What is Blue Light?</h3>
<meta charset="utf-8">
<p><span>Current understanding of the effects of blue light from digital device screens on your sight or your child's sight</span></p>
<p>Sunlight is made up of red, orange, yellow, green, blue, indigo and violet light. When combined, it becomes the white light we see. Each of these has a different energy and wavelength. Rays on the red end have longer wavelengths and less energy. On the other end, blue rays have shorter wavelengths and more energy. Light that looks white can have a large blue component, which can expose the eye to a higher amount of wavelength from the blue end of the spectrum.</p>
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<p><img alt="" height="419" src="https://www.preventblindness.org/sites/default/files/national/images/spectrum.png" width="454"></p>
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<h3>Where Are You Exposed to Blue Light?</h3>
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<p>The largest source of blue light is sunlight. In addition, there are many other sources:</p>
<ul>
<li>Fluorescent light</li>
<li>CFL (compact fluorescent light) bulbs</li>
<li>LED light</li>
<li>Flat screen LED televisions</li>
<li>Computer monitors, smart phones, and tablet screens</li>
</ul>
<p>Blue light exposure you receive from screens is small compared to the amount of exposure from the sun.  And yet, there is concern over the long-term effects of screen exposure because of the close proximity of the screens and the length of time spent looking at them. According to a recent NEI-funded study, children’s eyes absorb more blue light than adults from digital device screens.</p>
<p>Related link:<br><a href="https://www.ncbi.nlm.nih.gov/pubmed/21600300?report=abstract">http://www.ncbi.nlm.nih.gov/pubmed/21600300?report=abstract</a></p>
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<h3>What Are The Benefits of Blue Light?</h3>
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<p>Blue light is needed for good health.....<a href="https://www.preventblindness.org/blue-light-and-your-eyes" target="_blank" rel="noopener noreferrer">Read More</a></p>
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<p class="page-title" itemprop="name"><strong>More information from <a href="https://www.preventblindness.org/">www.preventblindness.org/</a></strong></p>
<h3 class="page-title" itemprop="name"><span><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">RetinaGuard Anti Blue Light Tempered Glass Screen Protectors :</a></strong></span></h3>
<h3><em><strong><a href="https://retinaguard.com/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max/products/anti-blue-light-tempered-glass-screen-protector-iphone-11" target="_blank" rel="noopener noreferrer">iPhone 11</a> / <a href="https://retinaguard.com/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max/products/anti-blue-light-tempered-glass-screen-protector-iphone-11-pro" target="_blank" rel="noopener noreferrer">iPhone 11 Pro</a> / <a href="https://retinaguard.com/collections/anti-blue-light-tempered-glass-screen-protector-iphone-11-11-11-pro-11-pro-max/products/anti-blue-light-tempered-glass-screen-protector-iphone-11-pro-max" target="_blank" rel="noopener noreferrer">iPhone 11 Pro Max</a></strong></em></h3>
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<h3 class="page-title" itemprop="name"><span><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">iPhone 8 / iPhone 8 plus</a></strong></em></span></h3>
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