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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. 20, Iss. 1 — Jan. 1, 2003
  • pp: 18–23

Wavelength dependence of reflectometric cone photoreceptor directionality

Niels P. A. Zagers, Tos T. J. M. Berendschot, and Dirk van Norren  »View Author Affiliations


JOSA A, Vol. 20, Issue 1, pp. 18-23 (2003)
http://dx.doi.org/10.1364/JOSAA.20.000018


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Abstract

We present evidence for the wavelength dependence of the directionality of light reflected from cone receptor cells (optical Stiles–Crawford effect): Blue light is more directional than red. According to the waveguide-scattering model of Marcos et al. [J. Opt. Soc. Am. A 15, 2012 (1998)], directionality is the sum of a waveguide component and a scattering component. The latter is proportional to 1 over wavelength squared, and it is related to the row-to-row spacing of the cone lattice. Our results allow a firm confirmation of Marcos et al.’s theory. For a 1.9-deg foveal area, group mean (n = 18) cone spacing was 3.42 μm, in good agreement with anatomical data. Group mean waveguide directionality was 0.077 mm−2.

© 2003 Optical Society of America

OCIS Codes
(170.6510) Medical optics and biotechnology : Spectroscopy, tissue diagnostics
(290.5880) Scattering : Scattering, rough surfaces
(330.4300) Vision, color, and visual optics : Vision system - noninvasive assessment
(330.5310) Vision, color, and visual optics : Vision - photoreceptors
(330.5370) Vision, color, and visual optics : Physiological optics

Citation
Niels P. A. Zagers, Tos T. J. M. Berendschot, and Dirk van Norren, "Wavelength dependence of reflectometric cone photoreceptor directionality," J. Opt. Soc. Am. A 20, 18-23 (2003)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-20-1-18

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