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Proceedings Paper

PMMA-based ophthalmic contact lens for vision correction of strabismus
Author(s): Amir Asgharzadeh Shishavan; Leland Nordin; Paul Tjossem; Michael D. Abramoff; Fatima Toor
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Paper Abstract

In this work we present the design of a novel ophthalmic prismatic contact lens to correct for strabismus. Strabismus, colloquially called "crossed-eyes" or "wall eyes," is a condition in which the eyes are not properly aligned with each other. To our knowledge there are no contact lenses that allow for strabismus correction. To address this, we have designed a poly methyl methacrylate (PMMA) based prismatic correction contact lens. Therefore, we modeled a Fresnel lens with the appropriate optical properties and a human eye in COMSOL Multiphysics Ray Optics module. Our first design was created by mapping Fresnel lenses onto the curved surface of the eye, the focus of light on retina was suboptimal. Next we determined two more potential solutions and improved the light focus on the retina but there were still some issues. A small fraction of light (~5%) diverged and could not be focused. Due to dispersive characteristic of PMMA, chromatic aberration was present. We will use our ray optics solution and convert into a metasurface nanophotonic lens that has the identical behavior and mitigates the issues related with prismatic lens.

Paper Details

Date Published: 16 September 2016
PDF: 8 pages
Proc. SPIE 9918, Metamaterials, Metadevices, and Metasystems 2016, 99180C (16 September 2016); doi: 10.1117/12.2237994
Show Author Affiliations
Amir Asgharzadeh Shishavan, The Univ. of Iowa (United States)
Leland Nordin, Grinnell College (United States)
Paul Tjossem, Grinnell College (United States)
Michael D. Abramoff, The Univ. of Iowa (United States)
The Univ. of Iowa Hospitals and Clinics (United States)
Fatima Toor, The Univ. of Iowa (United States)

Published in SPIE Proceedings Vol. 9918:
Metamaterials, Metadevices, and Metasystems 2016
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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