Definition of Corneal dystrophy, microcystic
Corneal dystrophy, microcystic: A disorder in which the cornea (the normally clear front window of the eye) shows dots (or microcysts), geographic map-like lines, and grayish fingerprint lines on examination with a slit-lamp, a device that focuses a high intensity light beam as a slit while the examiner looks at the front of the eye through a magnifying scope.
The disorder is usually silent and without symptoms. However, about one patient in ten has recurrent erosion of the cornea that usually begins after the age 30.
Conversely, half of patients with recurrent corneal erosions of idiopathic (unknown) origin have this disorder.
Last Editorial Review: 6/14/2012
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