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Robert P. Hirsch, PhD; M. Princeton Nadler, MD; David Miller, MD

Arch Ophthalmol. 1984;102(11):1633-1636.

Abstract
• A glare tester was described previously and was found, in the presence of cataracts, to be almost twice as predictive as was Snellen measurement for determining visual acuity outdoors. The current study tests the reproducibility of glare test scores and the influence of refractive error and contrast sensitivity on such scores when used in a clinical environment. Although the effects of visual acuity and impaired contrast sensitivity were found to be statistically significant components of glare test scores, the magnitudes of their effects were found to be clinically insignificant. Sequential retesting of physiologically stable eyes or, in the case of progressive cataracts, within intervals short enough to preclude discernible lenticular changes indicated that, for the most part, reproducibility of glare testing was comparable to that of visual acuity testing.

Author Affiliations
From the Department of Community Medicine, School of Medicine, University of Pittsburgh (Dr Hirsch); the Sewickley (Pa) Valley Hospital (Dr Nadler); and the Department of Ophthalmology, Harvard Medical School, Boston (Dr Miller).

Footnotes
Accepted for publication July 10, 1984.

Read in part before the Association for Research in Vision and Opthalmology, Sarasota, Fla, May 2, 1984.

Reprint requests to Office of Biometry and Epidemiology, National Eye Institute, Room 6A35, Building 31, National Institutes of Health, Bethesda, MD 20205 (Dr Hirsch).

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