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Proceedings Paper

PSF and wavefront propagation analysis of the visual performance in undilated Mexican normal virgin whole eyes (UCVA ≥ 20/20, 20/30 and 20/40)
Author(s): Eduardo Tepichin Rodriguez; Roberto Cantu M.D.; Marco A Rosales; Sabino Chavez-Cerda; David Sanchez-Delal lave; Andrée Curioca; Victor Montes M.D.; Julio Bonilla
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Paper Abstract

In the area of ophthalmic refractive surgery research, the Zernike expansion of the Wavefront aberrations has been the key factor in the measurement, representation and evaluation of the human eye aberrations in many different clinical situations. The Wavefront Aberrations described by the Zernike expansion can be translated as the polynomial expansion of the exit pupil of an optical system that represents the total Wavefront aberrations (corneal + internal elements) of the eye. In this direction, we can use this exit pupil to calculate both the incoherent Point Spread Function (PSF) and the Optical Transfer Function (OTF) of this system. With either of these two functions (PSF or OTF), we can easily calculate the output image of a certain object. This information can be used to evaluate the visual performance of the eyes with a set of pre-determined objects and their corresponding images. We apply these results to characterize the behavior of the aberrations of human eyes that in principle do not need any type of refractive compensation or correction, in order to have a reference which may be ethnical-dependent. We are interested in describing the set of aberration characterizing the Normal Mexican Eye (NME). To achieve our goal, we start our study with a group of Mexican Males with an Uncorrected Visual Acuity (UCVA) of 20/20, 20/30, and 20/40. We present the preliminary results of our characterization.

Paper Details

Date Published: 18 April 2005
PDF: 10 pages
Proc. SPIE 5688, Ophthalmic Technologies XV, (18 April 2005); doi: 10.1117/12.591851
Show Author Affiliations
Eduardo Tepichin Rodriguez, Instituto Nacional de Astrofísica, Óptica y Electronica (Mexico)
Roberto Cantu M.D., Correcion Visual con Laser (Mexico)
Marco A Rosales, Instituto Nacional de Astrofísica, Óptica y Electronica (Mexico)
Univ. de las Americas Puebla (Mexico)
Sabino Chavez-Cerda, Instituto Nacional de Astrofísica, Óptica y Electronica (Mexico)
David Sanchez-Delal lave, Instituto Nacional de Astrofísica, Óptica y Electronica (Mexico)
Andrée Curioca, Univ. de las Americas Puebla (Mexico)
Victor Montes M.D., Correcion Visual con Laser (Mexico)
Julio Bonilla, Correcion Visual con Laser (Mexico)


Published in SPIE Proceedings Vol. 5688:
Ophthalmic Technologies XV
Fabrice Manns; Bruce E. Stuck; Michael Belkin M.D.; Per G. Söderberg; Arthur Ho, Editor(s)

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