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Proceedings Paper

Average PFS and MTF analysis of undilated normal virgin whole eyes
Author(s): Eduardo Tepichin; Roberto Cantu; Marco A. Rosales; David Sanchez de la Llave; Jorge Ibarra Galitzia; Gustavo Ramirez Zavaleta; Andree Curioca; Victor Montes; Julio Bonilla
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Paper Abstract

We started our study with a group of Mexican Males with an Uncorrected Visual Acuity (UCVA) of 20/20, 20/30, and 20/40. The data was obtained using a Nidek OPD Scan ARK 10000 with the Version 1.11b of the working software. With the resulting Zernike coefficients, we calculated the average of the total Wavefront map, the Point Spread Function (PSF), the Optical Transfer Function, (OTF) and the corresponding Modulation Transfer Function (MTF). The purpose of these calculations was to obtain a pattern to be used as a reference to compare with the performance of human eyes after a laser surgery procedure and virgin eyes. In our case, the surgery was performed with an excimer laser Nidek EC-5000 Ver.1.26 W. When the OPD Scan software was upgraded, we realized that the Zernike coefficients for a given eye were different, for each version. Therefore, the aim of this work is to compare our reference pattern of the Zernike coefficients obtained with two different version of the working software.

Paper Details

Date Published: 24 September 2005
PDF: 8 pages
Proc. SPIE 5959, Medical Imaging, 59590B (24 September 2005); doi: 10.1117/12.625207
Show Author Affiliations
Eduardo Tepichin, National Institute of Astrophysics, Optics and Electronics (Mexico)
Roberto Cantu, CVL - Laser Vision Correction (Mexico)
Marco A. Rosales, National Institute of Astrophysics, Optics and Electronics (Mexico)
University of the Americas (Mexico)
David Sanchez de la Llave, National Institute of Astrophysics, Optics and Electronics (Mexico)
Jorge Ibarra Galitzia, National Institute of Astrophysics, Optics and Electronics (Mexico)
Gustavo Ramirez Zavaleta, National Institute of Astrophysics, Optics and Electronics (Mexico)
Andree Curioca, University of the Americas (Mexico)
Victor Montes, CVL - Laser Vision Correction (Mexico)
Julio Bonilla, CVL - Laser Vision Correction (Mexico)


Published in SPIE Proceedings Vol. 5959:
Medical Imaging
Andrzej Kowalczyk; Adolf F. Fercher; Valery V. Tuchin, Editor(s)

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