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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Vol. 18, Iss. 11 — Nov. 1, 2001
  • pp: 2692–2703

Retinal contrast losses and visual resolution with obliquely incident light

Matthew J. McMahon and Donald I. A. MacLeod  »View Author Affiliations


JOSA A, Vol. 18, Issue 11, pp. 2692-2703 (2001)
http://dx.doi.org/10.1364/JOSAA.18.002692


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Abstract

To determine whether vision with obliquely incident light is degraded by contrast losses originating in the retina, laser interference fringe patterns were produced on the retina for various directions of incidence of the two interfering beams. Contrast-modulation flicker [Vision Res. 38, 985 (1998)] was used as a psychophysical measure of contrast at the level of the photoreceptors. Fringe contrast was shown to be maximal when the interfering beams were equal in perceived brightness, not in physical intensity. The effective fringe contrast was slightly reduced with oblique incidence for high spatial frequencies, but the reduction was too slight to be an important factor in visual resolution. The loss was similar whether the incident beams were displaced from the pupil center in a direction parallel or perpendicular to the grating bars.

© 2001 Optical Society of America

OCIS Codes
(330.1070) Vision, color, and visual optics : Vision - acuity
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5310) Vision, color, and visual optics : Vision - photoreceptors
(330.5370) Vision, color, and visual optics : Physiological optics
(330.6110) Vision, color, and visual optics : Spatial filtering
(330.6130) Vision, color, and visual optics : Spatial resolution

History
Original Manuscript: January 2, 2001
Revised Manuscript: May 14, 2001
Manuscript Accepted: May 14, 2001
Published: November 1, 2001

Citation
Matthew J. McMahon and Donald I. A. MacLeod, "Retinal contrast losses and visual resolution with obliquely incident light," J. Opt. Soc. Am. A 18, 2692-2703 (2001)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-18-11-2692

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