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February 1997

Superior Pellucid Marginal Corneal Degeneration With Hydrops

Author Affiliations

Chicago, Ill

Arch Ophthalmol. 1997;115(2):274-275. doi:10.1001/archopht.1997.01100150276023

Pellucid marginal corneal degeneration is a bilateral corneal ectasia characterized by a band of clear thinning that runs approximately 1 to 2 mm inside and concentric to the inferior limbus.1 The uninvolved cornea protrudes centrally, overhanging the area of thinning, and remains clear and of normal thickness.1 To date, to our knowledge, superiorly located hydrops has been reported only in Terrien's marginal corneal degeneration.2 We report 2 cases with the characteristics of pellucid marginal degeneration, except that the thinning occurred only superiorly. In addition, the first patient we describe developed hydrops in the superior cornea of one eye.

Report of Cases. 

Case 1  A 62-year-old black man was seen with a 4-week history of sudden onset of pain, photophobia, and decreased visual acuity in his left eye. His medical history was unremarkable, and his family history included a son with "bad astigmatism." The best-corrected visual acuity was

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