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Eleanore M. Ebert, MD; Andrew M. Fine; Jan Markowitz, PhD; Maureen G. Maguire, PhD; JoAnn S. Starr; Stuart L. Fine, MD

Arch Ophthalmol. 1986;104(7):1009-1012.

Abstract
• Central visual function is characteristically reported as Snellen acuity at distance and near. We performed functional tests in a group of patients with visual acuity of 20/100 or worse due to macular disease to determine whether there was a relationship between Snellen acuity and functional performance among these patients with poor visual acuity. Our tests of functional performance included currency discrimination, color recognition, reading a clock, and reading large print. Our results suggest that there is a correlation between Snellen acuity and functional vision, even among patients with poor visual acuity. Hence, therapeutic efforts to keep patients' visual acuity at 20/200 rather than 20/400, tor example, appears to be justifiable in that better acuity levels seem to be associated with improved functional performance.

Author Affiliations
From the Retinal Vascular Center, The Wilmer Institute, The Johns Hopkins Medical Institutions, Baltimore.

Footnotes
Accepted for publication Feb 26, 1986.

Reprint requests to 229 Maumenee Bldg, 600 N Wolfe St, Baltimore, MD 21205 (Dr Fine).

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