It depends - do you want or need to look at your phone after dark, and having trouble falling asleep? Should I get blue light blocking glasses? Most are meant to be worn during the day while working in front of a computer, and at night to prevent the blue light from screens from keeping us awake. Many blue light blocking glasses you can buy also claim to help reduce eye strain. That means if you use these glasses when looking at a screen, especially after dark, they can help reduce exposure to blue light waves that can keep you awake. What are blue light blocking glasses?īlue light blocking glasses have filters in their lenses that block or absorb blue light, and in some cases UV light, from getting through. Prevent Blindness, a nonprofit dedicated to mitigating vision loss, also says that early research suggests that blue light can contribute to eye strain. However, research compiled by the AOA indicates that prolonged exposure to blue light (such as sitting in front of a computer all day) might cause damage to your retina - the innermost layer of your eye that sends signals to your brain to process what you are seeing. Our bodies have evolved to deal with this light." Raj Maturi, a clinical spokesperson for the American Academy of Ophthalmology, explained, "During the day, you get 10 times as much blue light from the sun as you do from your computer screen. The American Academy of Ophthalmology says that there's no evidence that the blue light specifically given off by screens will cause eye damage, as we are exposed to blue light all day from the sun. There's a lot of conflicting evidence, however, about exactly how harmful (or not) it really is. Is blue light harmful?īlue light has been linked to all sorts of issues, from causing digital eye strain to making us blind.
Tech products that have a LCD screen, like laptops, iPads and older iPhones, still use LEDs to backlight their displays.
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Unfortunately for all of us who cozy up to our tech after sunset, LEDs are used in countless smartphone, tablet and TV screens. So, what does my phone or computer screen have to do with this?Ĭompared to fluorescent and incandescent bulbs, LEDs can give off a significant amount of blue light. On the other hand, blue light can help us overcome sleep issues by disrupting our usual circadian rhythm. While exposure to any light waves after dark delays our bodies' production of melatonin, blue light waves can be especially problematic because they keep us alert. But today, we're exposed to light all day and into the night. Read more: Quit the Melatonin: 7 Natural Insomnia Remedies That Are Betterīefore the advent of artificial light, the sun regulated our sleep schedules. When the sun goes down, the lack of light signals our bodies to start producing melatonin, the hormone responsible for making us fall asleep. We get plenty of blue light waves each day from the sun, but after dark we're still exposed to it from many artificial sources. What gives off blue light?Īny source of visible light gives off blue light waves, whether it's the sun, a touchscreen or a light bulb. Within that spectrum are blue light waves, which are said to help us stay alert and upbeat. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.All visible light we humans see contains the entire spectrum of the rainbow, from red to violet.
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