Share Email Print
cover

Proceedings Paper

Interferometric analysis of the ablation profile in refractive surgery
Author(s): M. I. Rodríguez-Rodríguez; E. López-Olazagasti; M. A. Rosales; G. Ramírez-Zavaleta; R. Cantú; E. Tepichín
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

In ophthalmology, the laser excimer corneal surface ablation used to correct the refractive eye defects, such as myopia, astigmatism and hyperopia and, more recently, presbyopia is known as refractive surgery. Typically, the characterization of the corresponding technique, as well as the laser accuracy, is performed by analyzing standard ablation profiles made on PMMA (polymethylmethacrylate) plates. A drawback of this technique is that those plates do not necessarily represent the dimensions of the cornea during the ablation. On the other hand, due to the time varying process of the eye aberrations, the direct eye refractometric measurements can produce some errors. We report in this work the interferometric analysis of the ablation profile obtained with refractive surgery, applied directly on a contact lens. In this case, the resultant ablation profile might be closer to the real profile as well as time invariant. We use, as a reference, a similar contact lens without ablation. The preliminary results of the characterization of the corresponding ablation profile are also presented.

Paper Details

Date Published: 11 August 2008
PDF: 6 pages
Proc. SPIE 7064, Interferometry XIV: Applications, 70640W (11 August 2008); doi: 10.1117/12.795501
Show Author Affiliations
M. I. Rodríguez-Rodríguez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
E. López-Olazagasti, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
M. A. Rosales, Univ. de las Américas (Mexico)
G. Ramírez-Zavaleta, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
R. Cantú, CVL: Corrección Visual con Láser (Mexico)
E. Tepichín, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)


Published in SPIE Proceedings Vol. 7064:
Interferometry XIV: Applications
Erik L. Novak; Wolfgang Osten; Christophe Gorecki, Editor(s)

© SPIE. Terms of Use
Back to Top