Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1980 Jan;64(1):15-20.
doi: 10.1136/bjo.64.1.15.

Contrast sensitivity in amblyopia due to stimulus deprivation

D M Levi, R S Harwerth

Contrast sensitivity in amblyopia due to stimulus deprivation

D M Levi et al. Br J Ophthalmol. 1980 Jan.

Abstract

Contrast sensitivity functions for sinusoidal gratings of varying spatial frequency and stimulus duration were determined for both eyes of 2 patients with amblyopia due to early occlusion and lid closure. The amblyopic eyes showed reduced contrast sensitivity over a wide range of spatial frequencies and stimulus durations, and the temporal integration time of the amblyopic eye was increased by comparison with the non-amblyopic eye at high spatial frequencies. When the gratings were flickered at 10 Hz the sensitivity for both flicker and pattern detection was reduced in the amblyopic eye over the entire spatial frequency range. Abnormal flicker perception by the amblyopic eyes was also evident in the reduced photopic luminosity functions of these patients.

PubMed Disclaimer

References

    1. J Physiol. 1965 Dec;181(3):576-93 - PubMed
    1. J Opt Soc Am. 1967 Sep;57(9):1082-8 - PubMed
    1. Am J Ophthalmol. 1969 Jan;67(1):1-12 - PubMed
    1. J Opt Soc Am. 1972 Mar;62(3):446-8 - PubMed
    1. J Neurophysiol. 1972 Jul;35(4):532-41 - PubMed

Publication types