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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. 3 — Mar. 1, 2012
  • pp: 258–264

Comparison of two scanning instruments to measure peripheral refraction in the human eye

Bart Jaeken, Juan Tabernero, Frank Schaeffel, and Pablo Artal  »View Author Affiliations


JOSA A, Vol. 29, Issue 3, pp. 258-264 (2012)
http://dx.doi.org/10.1364/JOSAA.29.000258


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Abstract

To better understand how peripheral refraction affects development of myopia in humans, specialized instruments are fundamental for precise and rapid measurements of refraction over the visual field. We compare here two prototype instruments that measure in a few seconds the peripheral refraction in the eye with high angular resolution over a range of about ±45deg. One instrument is based on the continuous recording of Hartmann–Shack (HS) images (HS scanner) and the other is based on the photorefraction (PR) principle (PR scanner). On average, good correlations were found between the refraction results provided by the two devices, although it varied across subjects. A detailed statistical analysis of the differences between both instruments was performed based on measurements in 35 young subjects. Both instruments have advantages and disadvantages. The HS scanner also provides the high-order aberration data, while the PR scanner is more compact and has a lower cost. Both instruments are current prototypes, and further optimization is possible to make them even more suitable tools for future visual optics and myopia research and also for different ophthalmic applications.

© 2012 Optical Society of America

OCIS Codes
(120.0120) Instrumentation, measurement, and metrology : Instrumentation, measurement, and metrology
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: August 15, 2011
Revised Manuscript: October 24, 2011
Manuscript Accepted: November 14, 2011
Published: February 10, 2012

Virtual Issues
Vol. 7, Iss. 5 Virtual Journal for Biomedical Optics

Citation
Bart Jaeken, Juan Tabernero, Frank Schaeffel, and Pablo Artal, "Comparison of two scanning instruments to measure peripheral refraction in the human eye," J. Opt. Soc. Am. A 29, 258-264 (2012)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-29-3-258


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