Dry Eye
20:00 EDT 7 Aug 2012 | JAMA
The surface of the eye is protected by tears. Tears are made up of 3 layers: a water layer, a (fatty or oily) layer, and a mucous layer. When there are not enough tears being produced by the eye, or if the tears are lacking in 1 or more of these laye...
Original Article: Dry Eye
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