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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics


  • Editor: Gregory W. Faris
  • Vol. 5, Iss. 12 — Sep. 30, 2010

Centroid displacement statistics of the eye aberration

Eliseo Pailos, Abbas Ommani, Luis Diaz-Santana, and Salvador Bará  »View Author Affiliations

JOSA A, Vol. 27, Issue 8, pp. 1818-1827 (2010)

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We discuss a method for the study of the spatial statistics of the ocular aberrations, based on the direct use of the Hartmann–Shack centroid displacements, avoiding the wavefront reconstruction step. Centroid diagrams are introduced as a helpful aid to visualize basic properties of the aberration datasets, and slope-related second-order statistical functions are applied to check the compatibility between the experimental data and different models for the aberration statistics. Preliminary results suggest that no single power-law spectrum (e.g., Kolmogorov’s) is able to represent the whole range of spatial statistics of individual eye fluctuations and that more elaborated models, including at least the contribution of a relevant defocus fluctuation term, are required. This centroid-based approach allows for an easier intercomparison of results between laboratories and avoids the bias and information loss associated with the estimation of a reduced number of Zernike coefficients from a much wider slope data set.

© 2010 Optical Society of America

OCIS Codes
(000.5490) General : Probability theory, stochastic processes, and statistics
(330.4460) Vision, color, and visual optics : Ophthalmic optics and devices
(330.5370) Vision, color, and visual optics : Physiological optics

ToC Category:
Vision, Color, and Visual Optics

Original Manuscript: December 2, 2009
Revised Manuscript: June 11, 2010
Manuscript Accepted: June 16, 2010
Published: July 16, 2010

Virtual Issues
Vol. 5, Iss. 12 Virtual Journal for Biomedical Optics

Eliseo Pailos, Abbas Ommani, Luis Diaz-Santana, and Salvador Bará, "Centroid displacement statistics of the eye aberration," J. Opt. Soc. Am. A 27, 1818-1827 (2010)

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