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Thursday, October 7, 2010

Contact lenses and UV light

Researchers have linked ultraviolet light (UV) for the formation of cataracts. Excessive Exposure to ultraviolet light can also result in a condition called photokeratitis.

That's why some contact lenses now contain a UV blocking Agent.You cannot tell if a contact lens has a UV Blocker just looking at it — the blocking agent of course, so as not to disturb view. packaging of contact lens will specify if the product has a UV blocker, or you can ask your eye doctor.

Very important: blocking UV contacts are not intended to replace sunglasses. a contact lens covers only the cornea, not your entire eye.

However, UV-blocking contact lenses help protect the white part of your eye that is covered of tumour formation, as pingueculae and pterygia.

Sunglasses with UV protection can cover most of your eye and the parts of your face that surround the eye, depending on the size of the lens sunglasses. that is why contacts with UV blockers are designed to supplement the use of sunglasses as an additional protection.

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