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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. 2, Iss. 8 — Aug. 10, 2007

Requirements for discrete actuator and segmented wavefront correctors for aberration compensation in two large populations of human eyes

Nathan Doble, Donald T. Miller, Geunyoung Yoon, and David R. Williams  »View Author Affiliations


Applied Optics, Vol. 46, Issue 20, pp. 4501-4514 (2007)
http://dx.doi.org/10.1364/AO.46.004501


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Abstract

Numerous types of wavefront correctors have been employed in adaptive optics (AO) systems for correcting the ocular wavefront aberration. While all have improved image quality, none have yielded diffraction-limited imaging for large pupils ( 6 mm ) , where the aberrations are most severe and the benefit of AO the greatest. To this end, we modeled the performance of discrete actuator, segmented piston-only, and segmented piston∕tip∕tilt wavefront correctors in conjunction with wavefront aberrations measured on normal human eyes in two large populations. The wavefront error was found to be as large as 53 μm , depending heavily on the pupil diameter ( 2 7.5 mm ) and the particular refractive state. The required actuator number for diffraction-limited imaging was determined for three pupil sizes (4.5, 6, and 7.5 mm ), three second-order aberration states, and four imaging wavelengths (0.4, 0.6, 0.8, and 1.0 μm ). The number across the pupil varied from only a few actuators in the discrete case to greater than 100 for the piston-only corrector. The results presented will help guide the development of wavefront correctors for the next generation of ophthalmic instrumentation.

© 2007 Optical Society of America

OCIS Codes
(010.1080) Atmospheric and oceanic optics : Active or adaptive optics
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.4300) Vision, color, and visual optics : Vision system - noninvasive assessment
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.5370) Vision, color, and visual optics : Physiological optics

ToC Category:
Vision and color

History
Original Manuscript: October 16, 2006
Revised Manuscript: January 31, 2007
Manuscript Accepted: February 15, 2007
Published: June 20, 2007

Virtual Issues
Vol. 2, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Nathan Doble, Donald T. Miller, Geunyoung Yoon, and David R. Williams, "Requirements for discrete actuator and segmented wavefront correctors for aberration compensation in two large populations of human eyes," Appl. Opt. 46, 4501-4514 (2007)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-46-20-4501


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