Merck Manual

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Keratomalacia

(Xerotic Keratitis; Xerophthalmia)

By

Melvin I. Roat

, MD, FACS, Sidney Kimmel Medical College at Thomas Jefferson University

Last full review/revision May 2020
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Keratomalacia is degeneration of the cornea caused by nutritional deficiency.

Lack of tears causes extreme dryness of the eyes, and foamy spots appear on the temporal and often nasal bulbar conjunctiva (Bitot spots). Night blindness may occur.

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