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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. 19, Iss. 1 — Jan. 1, 2002
  • pp: 144–151

Aging of the human lens: changes in lens shape upon accommodation and with accommodative loss

Jane F. Koretz, Christopher A. Cook, and Paul L. Kaufman  »View Author Affiliations


JOSA A, Vol. 19, Issue 1, pp. 144-151 (2002)
http://dx.doi.org/10.1364/JOSAA.19.000144


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Abstract

Accommodation in the human eye occurs through controlled changes in crystalline lens shape, thickness, and refractive surface placement relative to the cornea. The changes in lens curvatures, whether surface or internal, have been characterized as a function of accommodation and subject age by use of quantitative analysis of Scheimpflug slit-lamp photographic images. Radii of curvature of the major lens refractive surfaces—the external and nuclear boundaries—decrease linearly with increasing accommodation in all eyes that are capable of accommodation. The rates at which they change with accommodation are age dependent, decreasing steadily toward zero with increased age. For the curves visible in each lens half, arising from boundaries between adjacent zones of discontinuity, radius of curvature and location are linearly related over the entire accommodative range for a given lens and over the age range for the population. The slope of this relationship changes with both accommodation and age, decreasing linearly in both cases. The relationship between these geometric changes and the loss of accommodative amplitude is discussed.

© 2002 Optical Society of America

OCIS Codes
(330.4300) Vision, color, and visual optics : Vision system - noninvasive assessment
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.5380) Vision, color, and visual optics : Physiology

History
Original Manuscript: February 20, 2001
Revised Manuscript: May 23, 2001
Manuscript Accepted: May 23, 2001
Published: January 1, 2002

Citation
Jane F. Koretz, Christopher A. Cook, and Paul L. Kaufman, "Aging of the human lens: changes in lens shape upon accommodation and with accommodative loss," J. Opt. Soc. Am. A 19, 144-151 (2002)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-19-1-144

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