Most computer glasses are also blue light glasses, but not necessarily the other way around.Ĭomputer glasses usually have a higher degree of LED blue light filtering plus slight magnification to increase comfort. What’s the difference between blue light glasses and computer glasses? If you feel more tired wearing high-percentage blue filtering glasses, consider stepping down to a lower percentage. This is especially true for high-percentage lenses. Yes, filtering blue light all day will not hurt your vision.īut be aware that filtering too much blue-turquoise light from the sun may have the reverse effect on your alertness, making you feel groggy earlier in the day. You may want to experiment with different levels of filtering to see what works best for you. Many computer- or gaming-specific glasses have visibly yellow lenses, since they tend to filter around 50% or 60% of blue light. These usually make more sense for all-day wear. However, lenses with 10% or 20% filtering can appear almost clear. Lenses that filter a large portion of blue light, including blue-turquoise light, have a deep orange or amber tint, greatly changing the way everything looks around us. A dark orange or amber tint is required to filter some blue-turquoise light. They can, but they usually don’t - and for good reason.īlue-light glasses that are clear usually filter only blue-violet light, not blue-turquoise light. SEE RELATED: What is computer vision syndrome? Do blue light glasses filter all blue light? But people are spending more time than ever staring at screens, and wearing blue light filtering glasses can increase visual comfort. We don’t know for sure whether long-term digital blue light exposure can impact the eyes or not. The amount of blue light emitted from digital screens is very small compared to sunlight.
Researchers at Harvard found that 6.5 hours of blue light exposure had twice the negative impact on sleep cycles when compared to the same amount of exposure to green light. But too much blue light (especially late in the day and before bedtime) may interrupt your sleep cycle. Blue-turquoise light from sunlight tells the brain to stay awake.
DOES F.LUX BLOCK BLUE LIGHT SKIN
But if you overdo it, you could experience damage to your skin and eyes.īlue-turquoise light is one of the primary elements regulating circadian rhythms (sleep cycles). The sun’s UV rays can be a great thing in moderation, leading to healthy vitamin D levels and overall well-being. Yes and no - blue light can be both good and bad.īlue light is a little like UV radiation. It’s possible that overexposure to HEV blue-violet light from the sun might damage the retinas of your eyes over time, leading to sight-threatening diseases like macular degeneration. When melatonin production is out of whack, so is your sleep schedule. When blue-turquoise light enters your eyes (especially late in the day), it sends a signal to your brain to stay awake by disrupting the production of the natural hormone melatonin. Blue-violet light - HEV ( high-energy visible) light - is in the potentially harmful range, and the longer wavelength blue-turquoise light is lower energy and what impacts sleep/wake cycles. Scattered blue light in the atmosphere is what makes the sky look blue.īlue light can be separated into blue-violet light (about 400-455 nm) and blue-turquoise light (about 450-500 nm). The sun is the largest producer of blue light, even indoors. What does blue light from sunlight do to your eyes? So, blue-violet light is also called high-energy visible (HEV) light.ĭigital electronic devices emit blue light.ĭigital screens, like the ones on our phones, TVs and computers, also emit blue light. Light with shorter wavelengths has higher energy. Blue light is on the lower end of the spectrum, with wavelengths between about 380 and 500 nanometers. The light of each color has a different wavelength. What is blue light?Īll of the light we see falls somewhere along the rainbow-colored visible light spectrum. These FAQs will provide a better understanding of what blue light is, how glasses can filter blue light and why it's a good idea to wear blue-violet light filtering glasses.
People primarily use them during extended screen sessions, when they’re exposed to LED blue light for hours at a time.īlue light glasses feature special light-filtering technology that prevents a certain percentage of blue light from reaching the eyes. For many people, blue light filtering glasses can increase comfort.īlue light glasses offer one of a handful of ways you may be able to improve your visual comfort in front of digital screens.
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