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.

It filters 99% of UV light, and the company recommends ... the benefits and risks of blue light screen protectors. People can also take other steps to look after their eye health, such as having ...

For these people and those born without a lens, UV light looks like a pale blue or pale violet, Bok said. In a famous example, impressionist painter Claude Monet saw more blue and purple overtones ...