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Updated: Nov 18, 2025

Customizing a Cryolite Glass Prosthetic Eye
Published on: October 31, 2019
Human Eye Optics within a Non-Euclidian Geometrical Approach and Some Implications in Vision Prosthetics Design
Liviu Bilteanu1,2, Ovidiu I Geicu1, Loredana Stanca1
1Department of Preclinic Sciences, Faculty of Veterinary Medicine, University of Agronomic Sciences and Veterinary Medicine of Bucharest, 105 Blvd. Splaiul Independentei, 050097 Bucharest, Romania.
Abstract:
An analogy with our previously published theory on the ionospheric auroral gyroscope provides a new perspective in human eye optics. Based on cone cells' real distribution, we model the human eye macula as a pseudospherical surface. This allows the rigorous description of the photoreceptor cell densities in the parafoveal zones modeled further by an optimized paving method. The hexagonal photoreceptors' distribution has been optimally projected on the elliptical pseudosphere, thus designing a prosthetic array counting almost 7000 pixel points. Thanks to the high morphological similarities to a normal human retina, the visual prosthesis performance in camera-free systems might be significantly improved.
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