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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. 29, Iss. 2 — Feb. 1, 2012
  • pp: A290–A297

Color discrimination across four life decades assessed by the Cambridge Colour Test

Galina V. Paramei  »View Author Affiliations


JOSA A, Vol. 29, Issue 2, pp. A290-A297 (2012)
http://dx.doi.org/10.1364/JOSAA.29.00A290


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Abstract

Color discrimination was estimated using the Cambridge Colour Test (CCT) in 160 normal trichromats of four life decades, 20–59 years of age. For each age cohort, medians and tolerance limits of the CCT parameters are tabulated. Compared across the age cohorts (Kruskal–Wallis test), the Trivector test showed increases in the three vectors, Protan, Deutan, and Tritan, with advancing age; the Ellipses test revealed significant elongation of the major axes of all three ellipses but no changes in either the axis ratio or the angle of the ellipse major axis. Multiple comparisons (Mann–Whitney test) between the cohorts of four age decades (20+,,50+) revealed initial benign deterioration of color discrimination in the 40+ decade, as an incremental loss of discrimination along the Deutan axis (Trivector test), and in the 50+ decade, as an elongation of the major axes of all three ellipses (Ellipses test).

© 2012 Optical Society of America

ToC Category:
Chromatic discrimination

History
Original Manuscript: August 30, 2011
Revised Manuscript: December 16, 2011
Manuscript Accepted: December 16, 2011
Published: February 1, 2012

Citation
Galina V. Paramei, "Color discrimination across four life decades assessed by the Cambridge Colour Test," J. Opt. Soc. Am. A 29, A290-A297 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-2-A290

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