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Etymology: L, purulentus, pus formation; Gk, keras, horn, itis, inflammation
a severe form of keratitis leading to disintegration of the cornea if untreated. The condition commonly begins with a bacterial infection of the lacrimal sac, occurs frequently in elderly patients who have poor nutrition, and spreads into a pus-producing ulcer.
Keratitis with the formation of pus.
See also: keratitis