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Visual Acuity Results in low vision patients: Distance and near ETDRS charts vs. reading acuity with the MNREAD chart

Clinical Sciences, SUNY College of Optometry, New York, NY

Commercial Relationships: A.T. Mosheyev, None; A. Zlotina, None; K. Aquilante, None.

Grant Identification: none

Abstract

Purpose: To compare binocular visual acuity results obtained using the Lighthouse ETDRS distance and near charts vs. reading acuity with the MNREAD printed chart in low vision patients.

Methods: Twenty low vision patients with age–related macular degeneration seen in the low vision clinic at the State University of New York Optometric Center had best–corrected ETDRS single letter distance and near acuity measured and compared to MNREAD reading acuity. The mean best–corrected distance acuity of the group was 0.6 log MAR (range 0.2 – 1.2).

Results: Correlation between results obtained with distance and near ETDRS acuity charts was high (R2 = 0.59) but the agreement between near single letter acuity and reading acuity with the MNREAD chart was stronger (R2 = 0.97).

Conclusions: Reading acuity and single letter visual acuity were similar in this group even while distance and near single letter visual acuity differed by one line (0.1 log unit).

Keywords: none

© 2004, The Association for Research in Vision and Ophthalmology, Inc., all rights reserved. For permission to reproduce any part of this abstract, contact the ARVO Office at arvo{at}arvo.org.