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Infection which involves the internal structures of the eye. It usually poses a serious threat to the visual function of the eye.

Excessive tear production or insufficient tear drainage from the eyes (usually from blockage of the lacrimal duct) causing overflow of tears onto the face.

The layer of the cornea closest to the anterior chamber. It is a single layer of cells which does not regenerate after birth. Its function is to pump fluid out of the cornea. If it fails, the cornea becomes hazy (decompensates).