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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: Stephen A. Burns
  • Vol. 26, Iss. 10 — Oct. 1, 2009
  • pp: 2206–2210

Fast scanning photoretinoscope for measuring peripheral refraction as a function of accommodation

Juan Tabernero and Frank Schaeffel  »View Author Affiliations


JOSA A, Vol. 26, Issue 10, pp. 2206-2210 (2009)
http://dx.doi.org/10.1364/JOSAA.26.002206


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Abstract

A new device was designed to provide fast measurements (4 s) of the peripheral refraction (90° central horizontal field). Almost-continuous traces are obtained with high angular resolution (0.4°) while the subject is fixating a central stimulus. Three-dimensional profiles can also be measured. The peripheral refractions in 10 emmetropic subjects were studied as a function of accommodation (200 cm, 50 cm, and 25 cm viewing distances). Peripheral refraction profiles were largely preserved during accommodation but were different in each individual. Apparently, the accommodating lens changes its focal length evenly over the central 90° of the visual field.

© 2009 Optical Society of America

OCIS Codes
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.5370) Vision, color, and visual optics : Physiological optics
(330.7322) Vision, color, and visual optics : Visual optics, accommodation
(330.7327) Vision, color, and visual optics : Visual optics, ophthalmic instrumentation

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: July 8, 2009
Revised Manuscript: August 21, 2009
Manuscript Accepted: August 21, 2009
Published: September 21, 2009

Virtual Issues
Vol. 4, Iss. 12 Virtual Journal for Biomedical Optics
October 8, 2009 Spotlight on Optics

Citation
Juan Tabernero and Frank Schaeffel, "Fast scanning photoretinoscope for measuring peripheral refraction as a function of accommodation," J. Opt. Soc. Am. A 26, 2206-2210 (2009)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-26-10-2206


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