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Proceedings Paper

Manufacture and analysis of a refractive surface with variable asphericity to model the human cornea
Author(s): Ángel S. Cruz-Félix; Agustin Santiago Alvarado; Fernando Iturbide-Jiménez; Emilio Reyes-Pérez; Estela López-Olazagasti; Eduardo Tepichín-Rodríguez
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Paper Abstract

The cornea contributes substantially to the performance of the human eye and obtaining the shape of the anterior corneal surface is crucial for ophthalmic applications such as the manufacture of contact lenses and visual laser correction. In this direction, there exist a large amount of theoretical models which describe the shape of the anterior corneal surface. A model of the anterior corneal surface using high-order aspherics has been previously reported in the literature, and one of the main features of this model is that it has been shown to accurately reproduce the clinical data. In this work we have designed a refractive surface with variable asphericity adopting the model mentioned above by means of finite-element software, and once the design was obtained we proceeded to manufacture the optical surface made of a polymer known as PDMS. Also, an interferometric analysis with a Mach-Zehnder interferometer was performed in order to obtain its wavefront aberration function. The main application of this optical surface is to be used as a substitute of a corneal surface within an optomechanical system to mimic the performance of the human eye.

Paper Details

Date Published: 3 September 2015
PDF: 6 pages
Proc. SPIE 9578, Current Developments in Lens Design and Optical Engineering XVI, 95780D (3 September 2015); doi: 10.1117/12.2188946
Show Author Affiliations
Ángel S. Cruz-Félix, Univ. Tecnológica de la Mixteca (Mexico)
Agustin Santiago Alvarado, Univ. Tecnológica de la Mixteca (Mexico)
Fernando Iturbide-Jiménez, Univ. Tecnológica de la Mixteca (Mexico)
Emilio Reyes-Pérez, Univ. Tecnologica de la Mixteca (Mexico)
Estela López-Olazagasti, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)
Eduardo Tepichín-Rodríguez, Instituto Nacional de Astrofísica, Óptica y Electrónica (Mexico)


Published in SPIE Proceedings Vol. 9578:
Current Developments in Lens Design and Optical Engineering XVI
R. Barry Johnson; Virendra N. Mahajan; Simon Thibault, Editor(s)

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