What is peripheral ulcerative keratitis (PUK)?

Updated: Jun 11, 2019
  • Author: Ellen N Yu-Keh, MD; Chief Editor: Andrew A Dahl, MD, FACS  more...
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Peripheral ulcerative keratitis (PUK), also known as peripheral corneal ulceration, is a potentially devastating disorder consisting of a crescent-shaped destructive inflammation at the margin of corneal stroma that is associated with an epithelial defect, presence of stromal inflammatory cells, and progressive stromal degradation and thinning. Commonly referred to as PUK, it can quickly produce progressive necrosis of the corneal stroma, leading to perforation and blindness. [1]

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