The right kind of sunglasses will help protect your eyes from the sun's ultraviolet (UV) rays. Too much UV exposure makes you more likely to get cataracts and macular degeneration. Choose sunglasses that block 99% to 100% of both UVA and UVB rays.
No. Even the best sunglasses cannot protect your eyes from very intense light. Tanning bed lights, industrial lights such as welding torches, glare from snow fields and looking directly into the sun can cause serious eye damage. They can also damage the retina, causing permanent loss vision loss.