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Cryomarcation Line and Pigment Migration After Retinal Cryosurgery
R. David Sudarsky, MD;
Lawrence A. Yannuzzi, MD
Arch Ophthalmol. 1970;83(4):395-401.
Abstract
Some degree of pigment migration invariably follows cryosurgery of the retina. Immediately upon thawing, pigment granules lysed from the pigment epithelium of the choroid may migrate through the retinal tear and into the vitreous. Pigment migration may also occur through the subretinal fluid to form a deposit behind the macula, or a pigmented line representing the farthest advance of the retinal separation. Pigment deposited in the foveal area may impair macular function. The important difference between cryopexy and diathermy applications to the choroid is the apparent absence of coagulation of the tissue proteins in the cryosurgical lesion. The complications of pigment migration are perhaps the most serious observed with the cryosurgical method.
Author Affiliations
New York
From the Department of Retinal Surgery (Dr. Sudarsky) and the Fluorescein Angiography Clinic (Dr. Yannuzzi), Manhattan Eye, Ear and Throat Hospital, New York.
Footnotes
Submitted for publication Aug 20, 1969.
Reprint requests to the Department of Retinal Surgery, Manhattan Eye, Ear and Throat Hospital, 210 E 64th St, New York 10021 (Dr. Sudarsky).
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