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Are blue light protection glasses the right choice for you?
April 20, 2022
What do blue light protection glasses do?
Blue light protection glasses, also known as computer glasses or screen glasses,are becoming increasingly popular among the digital generation. After all, we spend many hours working or relaxing in front of our digital devices. Sometimes, they’re just called blue blockers.
Blue light protection glasses are specifically designed to protect our eyes against overexposure to the artificial blue light that is emitted by our digital devices. Computer glasses help us to avoid the potential side effects of Computer Vision Syndrome and to ensure that our eyes feel rested after long hours in front of our screens.
How blue light protection glasses work
When something produces light, different colors vibrate at different wavelengths. The blue-violet light is called high energy visible (HEV) light. That’s the part that most closely resembles the sun’s potentially damaging blue light.
Naturally, artificial blue light is much weaker than the sun’s blue light. But the average American now spends so much of their time indoors in front of digital screens that the lower rate of exposure starts to add up.
It isn’t currently known whether electronic blue light can directly lead to eye problems, but it may contribute.
“The average time on devices and in front of screens for adults is pushing 11 hours per day, and as such, our eyes are under a lot of digital light strain,” said Dr. Sheri Rowen, an ophthalmologist and member of the Eyesafe Vision Health Advisory Board.
“The lenses are designed to help reduce the occurrence of digital eye strain and avoid circadian rhythm cycle disruption, affecting sleep and overall well-being,” Rowen said.
Blue light glasses block a percentage of this light with a special coating that reflects some of the blue light away from your eyes. How high that percentage depends on which glasses you buy.
Some blue light glasses have a yellow tint, while others look clear. Typically, lenses that look more yellowed tend to filter more blue light than their clearer counterparts.
“The best first step is to consult with an eye care professional who will help ascertain your needs for protection,” Rowen said.
Symptoms of digital eye strain often include blurry vision, headaches, and dry eyes. The strain of focusing on screens may even trigger ocular migraines.
The 20-20-20 rule is easy to remember and practice: For every 20 minutes you’re using a digital screen, look at an object at least 20 feet away for 20 seconds.
Lifestyle adjustments like the regular practice of the 20-20-20 rule, taking extended screen breaks, and using your phone’s dark mode can supplement any benefits you experience with blue-light-blocking glasses.