The importance of choosing safe sunglasses is often forgotten in the dizzying array of fun and fashion that surrounds sunglasses designs.
Repeated exposure to UV radiation can cause a number of serious (and seriously icky) eye problems, including cataracts, pterygiums (overgrowth of tissue from the white of the eye onto the cornea), solar keratopathy (cloudiness of the cornea), cancer of the conjunctiva, and skin cancer of the eyelids.
When purchasing sunglasses, look for ones that have proper markings, which ensures that the sunglasses offer a safe level of UV protection. A common misconception about sunglasses is that the darker lens, the more protection they offer.
In order to determine how light or dark sunglasses lenses are, they are given a Category Rating ranging from 0 through to 4. The rule of thumb is the higher the number, the darker the lens color.
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