Glasses that claim to shield your eyes from screens' blue light and supposedly help you get better shut-eye may not provide much benefit at all — other than elevating your accessories.

The front structures of the eye—the cornea and lens—block most UV light from reaching the retina. However, blue light passes through these protective barriers almost completely unfiltered ...

Blue light usually comes from the sun but also from digital screens and LED lights. Some experts believe artificial sources may be causing eye damage in humans, but animal studies are inconclusive ...

The researchers note that the blue tapetum also allows up to 60 percent of ultraviolet light to enter the eye, meaning reindeer see their surroundings in winter in shades of purple with surfaces ...