Glossary of Eye Definitions and Glasses Terms
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UV filter lenses
Glasses with UV filter lenses are designed to prevent harmful ultraviolet (UVA and UVB) rays from reaching your eyes. Prolonged exposure to UV rays can cause eye cancer or macular degeneration, which is why it is important to wear UV filter sunglasses when outdoors. Not all lenses are as effective at stopping harmful UV rays, ask your eye care provider which UV light blocker glasses will offer you the best protection.