However, it is important to avoid wearing sunglasses that do not give safe protection from the sun. Many sunglasses do not. It is possible for damage to occur in an afternoon outing or to build slowly over a period of years. Everyone should wear UV-absorbing sunglasses year round when in the sun.
Good sunglasses provide safe and comfortable vision.
Protect the long-term health of your eyes by choosing sunglasses that offer maximum protection from the sun. Special purpose is for very bright light, such as skiing, tropical beaches, and mountain climbing. Cosmetic is for lightly tinted lenses to use shopping and other around-town uses. Good sunglass lenses block 75 to 90 percent of visible light. Take caution to protect against blue light exposure.