People may not recognize you behind your fashionable shades—but what’s the real benefit of sunglasses? If you spend time outdoors, your eyes need protection from ultraviolet rays (high-frequency bursts of solar energy) and blue light (high-frequency visible light).
This is especially true for those with light-colored eyes, those who wear glasses, or those who have had cataract or other eye surgery. Sunglasses are also advised for people who are sun-sensitive. They can protect eyes against cataracts, growths on the skin around the eye, and even melanoma of the eye itself.
Look for sunglasses that are labeled: blocks 99% or all UV. Choose gray or brown lenses—other colors can distort color and let in more UV. To check the quality of the lens, hold glasses at arm’s length; look through—image should not distort or bend.If you wear glasses all the time a prescription sunglasses can be made for you. Ask an optician for a recommendation.