The cup-to-disc ratio and central retinal vein occlusion.
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.
Strahlman
E R
ER
Dana Center for Preventive Ophthalmology, Johns Hopkins Hospital, Baltimore, Md.
Quinlan
P M
PM
Enger
C
C
Elman
M J
MJ
D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009898:Optic Disk / Q000473:pathology*; D012016:Reference Values; D012170:Retinal Vein Occlusion / Q000473:pathology*