Manufacture and analysis of a refractive surface with variable asphericity to model the human cornea

Ángel S. Cruz-Félix; Agustin Santiago Alvarado; Fernando Iturbide-Jiménez; Emilio Reyes-Pérez; Estela López-Olazagasti; Eduardo Tepichín-Rodríguez

doi:10.1117/12.2188946

3 September 2015 Manufacture and analysis of a refractive surface with variable asphericity to model the human cornea

Ángel S. Cruz-Félix, Agustin Santiago Alvarado, Fernando Iturbide-Jiménez, Emilio Reyes-Pérez, Estela López-Olazagasti, Eduardo Tepichín-Rodríguez

Author Affiliations +

Proceedings Volume 9578, Current Developments in Lens Design and Optical Engineering XVI; 95780D (2015) https://doi.org/10.1117/12.2188946
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

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.

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Ángel S. Cruz-Félix, Agustin Santiago Alvarado, Fernando Iturbide-Jiménez, Emilio Reyes-Pérez, Estela López-Olazagasti, and Eduardo Tepichín-Rodríguez "Manufacture and analysis of a refractive surface with variable asphericity to model the human cornea", Proc. SPIE 9578, Current Developments in Lens Design and Optical Engineering XVI, 95780D (3 September 2015); https://doi.org/10.1117/12.2188946

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KEYWORDS

Eye models

Cornea

Eye

Optics manufacturing

3D modeling

Manufacturing

Visual process modeling

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