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Join Date: 17 Oct 2010
Location:  Saudi ArabiaPosts: 38 |
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Dry eye problems in women |
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Normal vision requires a moist healthy ocular surface. A sufficient quantity of tears, a normal composition of the tear film, normal lid closure, and regular blinking are among the prerequisites to maintain a healthy ocular surface.
The eye surface is always kept wet by tears, which are produced by tear glands. Tears also lubricate blink for comfort and allow lens movement and wash debris. Tears supply oxygen and nutrients to the cornea and the enzymes in the tears prevent infection. Dryness could be either due to deficient tear formation or loss of tears from the ocular surface through evaporation. |
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