Is there a racial difference in physiologic cup size?

Abstract:

:Although many clinicians believe that there is a racial difference in the size of the physiologic cup, this premise has not been studied. To evaluate this, we prospectively examined 100 black and 100 white volunteers. Stereoscopic optic disc photographs taken of each subject were masked to block out the fundus pigmentation, randomized, and then evaluated by an experienced clinician. The average cup/disc ratio in blacks (0.35) was significantly greater (P less than 0.0001) than that in whites (0.24) for both right and left eyes. Forty percent of the optic discs of blacks and 14% of the optic discs of whites had a cup/disc ratio greater than or equal to 0.4.

journal_name

Ophthalmology

journal_title

Ophthalmology

authors

Beck RW,Messner DK,Musch DC,Martonyi CL,Lichter PR

doi

10.1016/s0161-6420(85)33942-8

subject

Has Abstract

pub_date

1985-07-01 00:00:00

pages

873-6

issue

7

eissn

0161-6420

issn

1549-4713

pii

S0161-6420(85)33942-8

journal_volume

92

pub_type

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