![]() Some research suggests it can be damaging to the eyes, and more specifically the sensitive retina at the very back of the eye.īlue light is obviously very common in everyday life – it’s in sunlight – but some research suggests that increased use of digital devices and screens can cause eye health to suffer. It has a short wavelength, but also contains a high amount of energy. White light is formed from an entire spectrum of different colours, and blue light is just one of them. ![]() But there is some good news: blue-light glasses might be able to help. Extended periods of screen time can cause headaches, sore eyes and general losses of concentration. But she adds: “If you find they make a difference, there is no harm in using them.” Her main advice is no surprise: “Avoid screens in the late evening.Working from home means we’re spending even more time in front of computer and phone screens than we ever did before – and that’s not good news for your eyes. The blue-light-blocking glasses that actually filter out blue light do so by absorbing the blue wavelength light to stop it from ever reaching your eyes.Īt the end of the day-literally-when it comes to blue-light-blocking glasses, the “evidence for their use is limited,” says Ashley Brissette, M.D., an ophthalmologist and assistant professor of ophthalmology at Weill Cornell Medicine in New York City. How do the lenses actually help? Exposure to artificial blue light in the evening “can make us more alert, due in part to the suppression of melatonin,” the sleep hormone, says Dr. Grandner about his study: “The dark lenses blocked a lot of the correct wavelengths of light, but were so dark that they may be more difficult to wear.” That, alone, may guide your selection process. When it comes to sleep, however, there may be actual benefits to the glasses, if you can find the sweet spot between dark enough lenses and wearability. (In fact, the American Academy of Ophthalmology declines to endorse the wearing of blue-light-blocking glasses-or any eyeglasses, for that matter-to prevent eye strain.) Can blue-light-blocking lenses improve your sleep? ![]() A recent study in the “American Journal of Ophthalmology” shows blue-light-blocking lenses are no different than standard clear lenses in terms of reducing eye strain from too much screen time. Ask an ophthalmologist, and you’ll likely hear they don’t really help when it comes to eye strain. The popularity of blue-light-blocking glasses has sparked a debate in the medical community. To that end, the hip-meets-bookish Alvin frames -which are blue-light-filtering, according to Warby Parker-just might get the job done.ĭo blue-light-blocking glasses help with eye strain? If you put them on two hours before bedtime- the time frame recommended by sleep experts -night after night, eventually your brain will take that as a cue to wind down and get ready for sleep, he says. Grandner points out, there’s a psychological component to wearing any pair of blue blockers at night. The clearer the lens, the less effective they may be at blocking sleep-disrupting light. Pro tip: Blue-light-blocking glasses can be an easy way to spend down your FSA account, too. ![]() Here are glasses of varying shades that correspond to that criteria-and look attractive enough to wear at home and at the office. (Scroll down for more details about what to look for when selecting blue-light-blocking glasses.) ![]() Grandner told Buy Side, since they block fewer wavelengths of light. Red lenses blocked more light, the study found, but orange lenses are “likely more tolerable to wear” for long periods of time, Dr. “In nearly all cases, the orange and red lenses blocked virtually all the light that impacts circadian rhythms and sleep,” says the study’s lead author Michael Grandner, Ph.D., director of the Sleep and Health Research Program at the University of Arizona College of Medicine Tucson. Which ones actually work? A study published in 2022 looked at 50 pairs of blue-light-blocking glasses (some of which are featured in our picks below). But too much blue light exposure at night-from your phone, tablet, computer or any other digital screen-can get in the way of a good night’s sleep. During the day, the sun’s blue light wakes us up and stimulates us. And while the verdict is only partially in as to whether they actually reduce eye strain, there is research to suggest that certain blue-light-blocking glasses may help with sleep.īlue light affects the body’s circadian rhythm-our natural wake and sleep cycle. You could be forgiven for thinking a pair of blue-light-blocking eyeglasses is your free pass to indulge in as much screen time as you can squeeze into a day. ![]()
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