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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

  • Editor: Franco Gori
  • Vol. 31, Iss. 4 — Apr. 1, 2014
  • pp: A226–A231

Counterphase modulation flicker photometry: phenotypic and genotypic associations

A. J. Lawrance-Owen, J. M. Bosten, R. E. Hogg, G. Bargary, P. T. Goodbourn, and J. D. Mollon  »View Author Affiliations


JOSA A, Vol. 31, Issue 4, pp. A226-A231 (2014)
http://dx.doi.org/10.1364/JOSAA.31.00A226


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Abstract

The OSCAR test, a clinical device that uses counterphase flicker photometry, is believed to be sensitive to the relative numbers of long-wavelength and middle-wavelength cones in the retina, as well as to individual variations in the spectral positions of the photopigments. As part of a population study of individual variations in perception, we obtained OSCAR settings from 1058 participants. We report the distribution characteristics for this cohort. A randomly selected subset of participants was tested twice at an interval of at least one week: the test–retest reliability (Spearman’s rho) was 0.80. In a whole-genome association analysis we found a provisional association with a single nucleotide polymorphism (rs16844995). This marker is close to the gene RXRG, which encodes a nuclear receptor, retinoid X receptor γ. This nuclear receptor is already known to have a role in the differentiation of cones during the development of the eye, and we suggest that polymorphisms in or close to RXRG influence the relative probability with which long-wave and middle-wave opsin genes are expressed in human cones.

© 2014 Optical Society of America

OCIS Codes
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.7310) Vision, color, and visual optics : Vision

ToC Category:
Variations and deficiencies of color vision

History
Original Manuscript: October 3, 2013
Revised Manuscript: December 15, 2013
Manuscript Accepted: December 16, 2013
Published: February 12, 2014

Virtual Issues
Vol. 9, Iss. 6 Virtual Journal for Biomedical Optics

Citation
A. J. Lawrance-Owen, J. M. Bosten, R. E. Hogg, G. Bargary, P. T. Goodbourn, and J. D. Mollon, "Counterphase modulation flicker photometry: phenotypic and genotypic associations," J. Opt. Soc. Am. A 31, A226-A231 (2014)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-31-4-A226

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