The effect of decreased visual acuity on clinical color vision testing.

Abstract:

PURPOSE:Evaluate the effect of visual acuity on color vision testing. DESIGN:University based clinical experimental study. METHODS:Right eyes of 12 healthy subjects were fogged with plus lenses to logMAR 1.88 and assessed with D-15 panel, Ishihara, and Hardy-Rand-Rittler (HRR) plates. Subjects were tested at lesser degrees of fogging, 0.1 logMAR intervals. The acuity at which 5% of the population tests abnormally was estimated as follows. The average acuity at which a 10% reduction in correct responses occurred was determined. From this, two standard deviations were subtracted. Examination devices were compared using repeated measures analysis of variance. RESULTS:Color vision testing did not significantly differ from baseline up to logMAR 1.40 (D-15 panel), 1.10 (HRR plates), and 0.72 (Ishihara plates). Testing devices were significantly different (P < .005). CONCLUSIONS:Color vision testing is accurate up to logMAR 1.40 (20/501) with D-15 panel, 1.10 (20/252) with HRR plates, and 0.72 (20/106) with Ishihara plates.

journal_name

Am J Ophthalmol

authors

McCulley TJ,Golnik KC,Lam BL,Feuer WJ

doi

10.1016/j.ajo.2005.07.041

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

194-6

issue

1

eissn

0002-9394

issn

1879-1891

pii

S0002-9394(05)00812-3

journal_volume

141

pub_type

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