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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. 12, Iss. 10 — Oct. 1, 1995
  • pp: 2348–2357

Statistical distribution of foveal transverse chromatic aberration, pupil centration, and angle ψ in a population of young adult eyes

Maurice Rynders, Bruce Lidkea, William Chisholm, and Larry N. Thibos  »View Author Affiliations


JOSA A, Vol. 12, Issue 10, pp. 2348-2357 (1995)
http://dx.doi.org/10.1364/JOSAA.12.002348


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Abstract

Subjective transverse chromatic aberration (sTCA) manifest at the fovea was determined for a population of 85 young adults (19–38 years old) by means of a two-dimensional, two-color, vernier alignment technique. The statistical distribution of sTCA was well fitted by a bivariate Gaussian function with mean values that were not significantly different from zero in either the horizontal or the vertical direction. We conclude from this result that a hypothetical, average eye representing the population mean of human eyes with medium-sized pupils is free of foveal sTCA. However, the absolute magnitude of sTCA for any given individual was often significantly greater than zero and ranged from 0.05 to 2.67 arcmin for the red and the blue lights of a computer monitor (mean wavelengths, 605 and 497 nm, respectively). The statistical distribution of the absolute magnitude of sTCA was well described by a Rayleigh probability distribution with a mean of 0.8 arcmin. A simple device useful for population screening in a clinical setting was also tested and gave concordant results. Assuming that sTCA at the fovea is due to decentering of the pupil with respect to the visual axis, we infer from these results that the pupil is, on average, well centered in human eyes. The average magnitude of pupil decentration in individual eyes is less than 0.5 mm, which corresponds to ψ = 3 deg for the angle between the achromatic and the visual axes of the eye.

© 1995 Optical Society of America

History
Original Manuscript: January 31, 1995
Revised Manuscript: May 30, 1995
Manuscript Accepted: May 31, 1995
Published: October 1, 1995

Citation
Maurice Rynders, Bruce Lidkea, William Chisholm, and Larry N. Thibos, "Statistical distribution of foveal transverse chromatic aberration, pupil centration, and angle ψ in a population of young adult eyes," J. Opt. Soc. Am. A 12, 2348-2357 (1995)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-12-10-2348

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