April 2009
Volume 50, Issue 13
Free
ARVO Annual Meeting Abstract  |   April 2009
Interocular Differences in Strehl Ratio Diminish Binocular Visual Performance
Author Affiliations & Notes
  • J. J. Castro
    Optics, University of Granada, Granada, Spain
  • J. R. Jiménez
    Optics, University of Granada, Granada, Spain
  • E. Hita
    Optics, University of Granada, Granada, Spain
  • C. Ortiz
    Optics, University of Granada, Granada, Spain
Investigative Ophthalmology & Visual Science April 2009, Vol.50, 1577. doi:
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    • Get Citation

      J. J. Castro, J. R. Jiménez, E. Hita, C. Ortiz; Interocular Differences in Strehl Ratio Diminish Binocular Visual Performance. Invest. Ophthalmol. Vis. Sci. 2009;50(13):1577.

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

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Abstract

Purpose: : The aim of this work is to determine the influence of interocular differences in retinal-image quality on binocular visual performance.

Methods: : We measured contrast sensitivity function (both monocular and binocular) and maximum disparity. From contrast sensitivity data we computed binocular summation. Maximum disparity was measured with a mirror stereoscope showing random dot stereograms (RDS) to the observers. Data on retinal-image quality were taken from a double-pass device (OQAS), providing the Strehl ratio as a parameter to quantify retinal-image quality. 25 observers took part in the experiments.

Results: : Binocular summation for contrast sensitivity function and maximum disparity are significantly (p<0.01) correlated with interocular differences in Strehl ratio. The higher the interocular differences in Strehl ratio the lower the maximum disparity and the binocular summation.

Conclusions: : Binocular vision, the normal state of vision, is less effective as the interocular differences in retinal-image increase.

Keywords: binocular vision/stereopsis • imaging/image analysis: non-clinical • contrast sensitivity 
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