Wearable telescopic contact lens
| Autor: | Goretty Alonso Amigo, William E. Meyers, Eric Tremblay, Alex Groisman, Joseph E. Ford, Glenn M. Schuster, Igor Stamenov, Jerry Legerton, Ashkan Arianpour |
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| Rok vydání: | 2015 |
| Předmět: |
Adult
Optics and Photonics Materials science genetic structures Contact Lenses Polymers Materials Science (miscellaneous) Permeability Industrial and Manufacturing Engineering law.invention Cohort Studies Entrance pupil Telescope Macular Degeneration Optics law medicine Humans Computer Simulation Cylindrical lens Business and International Management Vision Ocular Simple lens business.industry Equipment Design eye diseases Oxygen Contact lens Lens (optics) Interferometry medicine.anatomical_structure Achromatic lens Human eye Gases sense organs business |
| Zdroj: | Applied Optics. 54:7195 |
| ISSN: | 1539-4522 0003-6935 |
| Popis: | We describe the design, fabrication, and testing of a 1.6 mm thick scleral contact lens providing both 1× and 2.8× magnified vision paths, intended for use as a switchable eye-borne telescopic low-vision aid. The F/9.7 telescopic vision path uses an 8.2 mm diameter annular entrance pupil and 4 internal reflections in a polymethyl methacrylate precision optic. This gas-impermeable insert is contained inside a smooth outer casing of rigid gas-permeable polymer, which also provides achromatic correction for refraction at the curved lens face. The unmagnified F/4.1 vision path is through the central aperture of the lens, with additional transmission between the annular telescope rings to enable peripheral vision. We discuss potential solutions for providing oxygenation for an extended wear version of the lens. The prototype lenses were characterized using a scale-model human eye, and telescope functionality was confirmed in a small-scale clinical (nondispensed) demonstration. |
| Databáze: | OpenAIRE |
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