August 1978
Volume 17, Issue 8
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Articles  |   August 1978
Normal and amblyopic contrast sensitivity function in central and peripheral retinas.
Investigative Ophthalmology & Visual Science August 1978, Vol.17, 746-753. doi:
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      J Thomas; Normal and amblyopic contrast sensitivity function in central and peripheral retinas.. Invest. Ophthalmol. Vis. Sci. 1978;17(8):746-753.

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      © ARVO (1962-2015); The Authors (2016-present)

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Abstract

Contrast sensitivity functions (CSF's) for temporally modulated sine wave gratings were established at a variety of retinal eccentricities in three esotropic amblyopes with acuities in their amblyopic eyes of 20/50, 20/100, and 20/300. CSF's were shown to vary with eccentricity and the degree of amblyopia. In the 20/50 amblyope, reduced CSF's were confined to the higher spatial frequencies and to the central 5 degrees of the retina. Given greater acuity deficits (e.g., 20/100 and 20/300), CSF's were depressed over the entire spatial frequency range tested, with the effects intruding farther into the peripheral retina than for the 20/50 amblyope. In addition, the detection of the temporal as well as the spatial modulation was depressed in the CSF's of the observers with severe amblyopia.

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