conjunctiva
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Credit: St Luke's Cataract & Laser Institute
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The thin, transparent, mucous membrane that covers the outer surface of the eye. It begins at the outer edge of the cornea and covers the visible part of the sclera and lines the inside of the eyelids. It is nourished by tiny blood vessels that are barely visible to the naked eye. The conjunctiva also secretes oils and mucous that moisten and lubricate the eye. Inflammation of the conjuctiva is known as conjunctivitis, or, commonly, pink eye.
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