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  • Courtesy of Parul Jain, FICO MD.
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    Cornea/External Disease

    Peripheral ulcerative keratitis is a rare but potentially devastating corneal emergency. It is characterized by crescentic-shaped peripheral ulceration and may involve the sclera and conjunctiva. The etiology includes immune-mediated systemic diseases such as granulomatosis polyangiitis and rheumatoid arthritis, immune-medicated ocular diseases such as Mooren’s ulcer and non-immune mediated conditions, especially infective etiology. A host of other conditions can also mimic this entity. The patient can present in the advanced stage with corneal perforation, necessitating emergency tectonic procedures.