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Investigative Ophthalmology & Visual Science, Vol 24, 798-802, Copyright © 1983 by Association for Research in Vision and Ophthalmology

ARTICLES AND REPORTS

Comparison of three methods for rapid determination of threshold contrast sensitivity

AP Ginsburg and MW Cannon

Threshold contrast sensitivity functions for 13 subjects were determined on 5 consecutive days using three psychophysical methods. Each method was implemented on a microprocessor controlled display system and considered as a possible candidate for a rapid visual screening test. The methods used were Bekesy tracking, method of adjustment, and method of increasing contrast. The method of increasing contrast proved superior to the other methods in repeatability, speed, and the preservation of individual differences in contrast sensitivity over the testing period.


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