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Article
July 1984

Spatial Contrast SensitivityImportance of Controlling the Patient's Visibility Criterion

Author Affiliations

From the Section on Visual Processing, Clinical Branch, National Eye Institute, National Institutes of Health, Bethesda, Md.

Arch Ophthalmol. 1984;102(7):1035-1041. doi:10.1001/archopht.1984.01040030837028
Abstract

• Clinical spatial contrast sensitivity measurements are typically made using psychophysical methods that do not specify the response criterion being used by the patient in judging grating visibility. Results of this report show the necessity of such methods for (1) maximizing detectability of early contrast sensitivity deficits by minimizing normal sample variance, and (2) ensuring that changes in an individual's contrast sensitivity reflect changes in vision and not simply fluctuations in the patient's criterion for judging grating visibility.

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