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Journal of the Optical Society of America A

Journal of the Optical Society of America A


  • Vol. 15, Iss. 9 — Sep. 1, 1998
  • pp: 2466–2476

Estimates of the ocular wave aberration from pairs of double-pass retinal images

Ignacio Iglesias, Esther Berrio, and Pablo Artal  »View Author Affiliations

JOSA A, Vol. 15, Issue 9, pp. 2466-2476 (1998)

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We apply a computational technique to retrieve the wave aberration of the eye from the point-spread function obtained from pairs of double-pass retinal images. The method consists of an adapted pyramidal version of a nonlinear least-squares fitting procedure to a wave aberration expressed as an expansion in Zernike polynomials. Although the procedure provides accurate estimates of the wave aberration, it presents several drawbacks that are discussed in detail. In particular, since a great deal of computational time is necessary to retrieve a single wave aberration, this technique is not useful for real-time applications. We present results of wave aberrations in five normal subjects in the fovea for a 4-mm-pupil diameter. In every case there is a clear presence of comalike aberrations, while the third-order spherical aberration is usually smaller than previous estimates. The root-mean-square error in the retrieved wave aberration, when defocus and astigmatism were corrected, ranges from 0.24 to 0.5 wavelength. The particular values of the aberration coefficients present a large intersubject variability.

© 1998 Optical Society of America

OCIS Codes
(100.5070) Image processing : Phase retrieval
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.5370) Vision, color, and visual optics : Physiological optics

Original Manuscript: December 1, 1997
Revised Manuscript: February 9, 1998
Manuscript Accepted: January 28, 1998
Published: September 1, 1998

Ignacio Iglesias, Esther Berrio, and Pablo Artal, "Estimates of the ocular wave aberration from pairs of double-pass retinal images," J. Opt. Soc. Am. A 15, 2466-2476 (1998)

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