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Sunglasses can protect your eyes from damage caused by UV radiation. The best brands of eyewear lenses produce a wide variety of photoprotective lens.  Before buying eyglasses is important to know the shape of face:

Oval face: square eyeglasses or cat-eye glasses

Round face: square eyeglasses

Square face: round eyeglasses

Triangular face: aviator eyeglasses

The larger is the shape, the more secure is the skin around the eyes. The lenses can be polarized, they reduce glare from reflective surfaces such as the surface of a lake or the hood of a car and are good for driving or water sports) or colored (dark lenses for mountain, yellow lenses for cyclists and golfers). Good sunglasses can Block out 99 to 100 percent of both UV-A and UV-B radiation and screen out 75 to 90 percent of visible light. If you are exposed, unprotected, to excessive amounts of UV radiation over a short period of time, you are likely to experience an effect called photokeratitis. If you don’t protect from UV your eyes for many years you can develop cataracts or macular degeneration

Read also: Pasadina Eye Associates

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