Blue Light Waves and Protection

Researchers say that while filters in human eye such as the cornea and the lens do a decent job of blocking ultraviolet rays from reaching the light-sensitive retina at the back of the eye, those filters do not block natural or artificial blue light from reaching the retina. That is the reason it is important to wear sunglasses when out in the bright sun. Some are also choosing to wear special blue-light blocking glasses or screen protectors when using electronic devices. Studies have shown that exposing your eyes to a digital device for two consecutive hours can cause eyestrain and fatigue—to say nothing of exposure to artificial blue light waves. Estimates are that 60 percent of people who use electronic devices spent an average of six hours a day viewing a screen. That’s a great deal of unprotected exposure to artificial blue light waves—and no one knows what that is doing to the developing brain and eyes.