Elsevier

Vision Research

Volume 17, Issue 9, 1977, Pages 1049-1055
Vision Research

The threshold contrast sensitivity function in strabismic amblyopia: Evidence for a two type classification

https://doi.org/10.1016/0042-6989(77)90009-8Get rights and content

Abstract

Threshold contrast sensitivity functions for 10 representative strabismic amblyopes are presented. The results indicate that there are two classes of response. For one class, contrast sensitivity is depressed for only high spatial frequencies. For the other class, contrast sensitivity is depressed for all spatial frequencies, including low spatial frequencies; this response has not been previously reported. It is proposed that some results from the latter class are not simply extensions in severity of the former class and therefore two types of amblyopia need to be postulated.

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