Sunglasses are more than a fashion accessory. They're an imnportant way to safeguard the health and comfort of your eyes. Even if you don't wear prescription glasses, make sure you buy your sunglasses from an eyecare professional who can explain all your choices and ensure that your sunglasses provide the proper amount of UV protections.
Tints alone don't provide UV or blue light protection, so avoid buying sunglasses if you don't know how much protection they provide. An untreated pair of sunglasses can harm your eyes by tricking the pupils to stay open in bright light, allowing them to be flooded with harmful rays.
The Sunglass Association of America and the U.S. Food and Drug Administration have developed a voluntary labeling system for nonprscription sunglasses:
