07/08/2022
UV-blocking sunglasses are important for protecting the delicate skin around the eyes, as well as the eyes themselves.
Research has shown that long hours in the sun without protecting your eyes increase your chances of developing certain eye diseases.
The ideal sunglasses should block 99% to 100% of UVA and UVB rays. Before you buy, check the label to make sure they do. Those labeled “cosmetic” block about 70% of UV rays. If there is no label, don’t assume the sunglasses provide any UV protection.
Darker glasses are not necessarily better because UV protection comes from an invisible chemical in or applied to the lenses, not from the color or darkness of the lenses. Look for an ANSI label.
Large-framed and wraparound sunglasses are more likely to protect your eyes from light coming in from different angles. Children need smaller versions of real, protective adult sunglasses – not toy sunglasses.
Some brands of eyeglasses and contact lenses now offer protection against UV rays as well. But don’t assume this is true for lenses you wear unless it’s clearly stated on the product label, or you confirm this with your eye care professional. Of course, glasses come in many shapes and sizes, and smaller lenses will cover and protect smaller areas. Contact lenses don’t cover the whole eye and surrounding areas, so they are not sufficient eye protection when used alone.
Source: American Cancer Society