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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. 1 — Jan. 4, 2010

Anterior corneal profile with variable asphericity

Marco A. Rosales, Montserrat Juárez-Aubry, Estela López-Olazagasti, Jorge Ibarra, and Eduardo Tepichín  »View Author Affiliations


Applied Optics, Vol. 48, Issue 35, pp. 6594-6599 (2009)
http://dx.doi.org/10.1364/AO.48.006594


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Abstract

We present a corneal profile in which the eccentricity, e( Q = e 2 ), has a nonlinear continuous variation from the center outwards. This nonlinear variation is intended to fit and reproduce our current experimental data in which the anterior corneal surface of the human eye exhibits different values of e at different diameters. According to our clinical data, the variation is similar to an exponential decay. We propose a linear combination of two exponential functions to describe the variation of e. We then calculate the corneal sagittal height by substituting e in the first-order aspherical surface equation to obtain the corneal profile. This corneal profile will be used as a reference to analyze the resultant profiles of the customized corneal ablation in refractive surgery.

© 2009 Optical Society of America

OCIS Codes
(170.4460) Medical optics and biotechnology : Ophthalmic optics and devices
(170.4470) Medical optics and biotechnology : Ophthalmology
(170.4730) Medical optics and biotechnology : Optical pathology
(330.4060) Vision, color, and visual optics : Vision modeling
(330.5370) Vision, color, and visual optics : Physiological optics
(330.7326) Vision, color, and visual optics : Visual optics, modeling

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: July 24, 2009
Revised Manuscript: November 5, 2009
Manuscript Accepted: November 6, 2009
Published: December 1, 2009

Virtual Issues
Vol. 5, Iss. 1 Virtual Journal for Biomedical Optics

Citation
Marco A. Rosales, Montserrat Juárez-Aubry, Estela López-Olazagasti, Jorge Ibarra, and Eduardo Tepichín, "Anterior corneal profile with variable asphericity," Appl. Opt. 48, 6594-6599 (2009)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ao-48-35-6594

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