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Proceedings Paper

An ocular prosthesis which reacts to light
Author(s): J. Lapointe; A. Harhira; J.-F. Durette; S. Beaulieu; A. Shaat; P. R. Boulos; R. Kashyap
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Paper Abstract

The realism of an ocular prosthesis is limited by the immobility of the pupil. Our method to solve this problem is to use a liquid crystal display (LCD) to control the pupil size as a function of the ambient light. This study demonstrates the first LCD to our knowledge surviving the ocular prosthetic manufacturing steps. The dynamic pupil is controlled by a novel, entirely autonomous and self-powered passive electronic circuit using photodiodes in a high voltage configuration. Future work for a complete prosthesis with a dynamic pupil is discussed. Finally, a standard device for the mass production of ocular prostheses is presented.

Paper Details

Date Published: 12 February 2011
PDF: 7 pages
Proc. SPIE 7885, Ophthalmic Technologies XXI, 788512 (12 February 2011); doi: 10.1117/12.874078
Show Author Affiliations
J. Lapointe, Ecole Polytechnique de Montréal (Canada)
A. Harhira, Ecole Polytechnique de Montréal (Canada)
J.-F. Durette, Oculo-Plastik, Inc. (Canada)
S. Beaulieu, Univ. de Sherbrooke (Canada)
A. Shaat, Ain Shams Univ. (Egypt)
P. R. Boulos, Hôpital Maisonneuve-Rosemont (Canada)
Univ. de Montréal (Canada)
R. Kashyap, Ecole Polytechnique de Montréal (Canada)


Published in SPIE Proceedings Vol. 7885:
Ophthalmic Technologies XXI
Fabrice Manns; Per G. Söderberg; Arthur Ho, Editor(s)

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