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The Cup-to-Disc Ratio and Central Retinal Vein Occlusion
Ellen R. Strahlman, MD;
Patricia M. Quinlan, MD;
Cheryl Enger, MS;
Michael J. Elman, MD
Arch Ophthalmol. 1989;107(4):524-525.
Abstract
• Recent reports have suggested that a small optic cup may contribute to the development of certain optic disc disorders, such as anterior ischemic optic neuropathy. In a masked fashion, the cup-to-disc ratios from the fellow eyes of 55 patients with central retinal vein occlusion (CRVO) were compared with 55 controls to determine whether a similar association could be established for CRVO. Controls came from two population-based surveys, and they were matched to cases for age, race, and sex. The mean cup-to-disc ratios for the CRVO fellow eyes and controls were 0.39 and 0.40, respectively; the distribution of the sizes of the cup-to-disc ratios was nearly identical in the two groups. These results suggested that the cup-to-disc ratio is not a useful predictor of the development of CRVO.
Author Affiliations
From the Dana Center for Preventive Ophthalmology (Dr Strahlman and Ms Enger), and the Retinal Vascular Center (Drs Quinlan and Elman), The Wilmer Institute, The Johns Hopkins Hospital, and the Department of Ophthalmology, University of Maryland Hospital (Dr Elman), Baltimore. Dr Strahlman is now with the National Eye Institute, Bethesda, Md.
Footnotes
Accepted for publication Oct 28, 1988.
Reprint requests to the National Eye Institute, National Institutes of Health, Bldg 31, Room 6A10, 900 Rockville Pike, Bethesda, MD 20892 (Dr Strahlman).
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