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October 1982

New Glare Tester

Author Affiliations

Sewickley, Pa

Arch Ophthalmol. 1982;100(10):1676. doi:10.1001/archopht.1982.01030040654020

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To the Editor.  —In the article entitled "A New Glare Tester for Clinical Testing: Results Comparing Normal Subjects and Variously Corrected Aphakic Patients" by LeClaire et al published in the January Archives (1982;100:153-158), attention should be directed to three corrections.

  1. The visual acuity in the patient with 20/25 OU refracting lane vision (described in the opening paragraph) plummeted to 20/800, not 20/200, when tested with the Snellen chart outdoors with the sun in front of him. This not uncommon combination of good refracting lane vision with terrible outdoor visual acuity in the real world can easily be identified by examination with the Miller-Nadler glare tester.

  2. In the "Apparatus" section, the Landolt ring is described as "producing the equivalent of a 20/200 Snellen letter." It is actually a 20/400 Snellen letter equivalent size. This allows enough latitude so that most subjects with seriously impaired visual acuity can still perform reliably during

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