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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 3 — Feb. 10, 2010

Design and validation of a scanning Shack Hartmann aberrometer for measurements of the eye over a wide field of view

Xin Wei and Larry Thibos  »View Author Affiliations


Optics Express, Vol. 18, Issue 2, pp. 1134-1143 (2010)
http://dx.doi.org/10.1364/OE.18.001134


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Abstract

Peripheral vision and off-axis aberrations not only play an important role in daily visual tasks but may also influence eye growth and refractive development. Thus it is important to measure off-axis wavefront aberrations of human eyes objectively. To achieve efficient measurement, we incorporated a double-pass scanning system with a Shack Hartmann wavefront sensor (SHWS) to develop a scanning Shack Hartmann aberrometer (SSHA). The prototype SSHA successfully measured the off-axis wavefront aberrations over +/− 15 degree visual field within 7 seconds. In two validation experiments with a wide angle model eye, it measured change in defocus aberration accurately (<0.02μm, 4mm pupil) and precisely (<0.03μm, 4mm pupil). A preliminary experiment with a human subject suggests its feasibility in clinical applications.

© 2010 OSA

OCIS Codes
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics

ToC Category:
Vision, Color, and Visual Optics

History
Original Manuscript: October 26, 2009
Revised Manuscript: December 21, 2009
Manuscript Accepted: December 23, 2009
Published: January 8, 2010

Virtual Issues
Vol. 5, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Xin Wei and Larry Thibos, "Design and validation of a scanning Shack Hartmann aberrometer for measurements of the eye over a wide field of view," Opt. Express 18, 1134-1143 (2010)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=oe-18-2-1134


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