Reflectivity of the human cornea and its influence on the selection of a suitable light source for a low-cost tonometer

Yanmei Han; Peter John Bryanston-Cross; Keith Shaw; Mark Hero

doi:10.1117/12.482991

12 September 2002 Reflectivity of the human cornea and its influence on the selection of a suitable light source for a low-cost tonometer

Yanmei Han, Peter John Bryanston-Cross, Keith Shaw, Mark Hero

Author Affiliations +

Proceedings Volume 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment; (2002) https://doi.org/10.1117/12.482991
Event: Photonics Asia, 2002, Shanghai, China

Abstract

This article introduces an experiment designed to investigate which wavelength of light is best reflected by the cornea. Results indicate that the human cornea reflects near-infrared or violet light more efficiently than it does bright visible light. Further, results indicate that at a wavelength of 580nm, the reflectivity of the cornea decreases to a minimum value of 37% given light incident on the cornea at an angle of 45°. A light source suitable for the detection of glaucoma has been selected based on these results, also taking into account the spectral response of a suitable photo-detector.

Citation Download Citation

Yanmei Han, Peter John Bryanston-Cross, Keith Shaw, and Mark Hero "Reflectivity of the human cornea and its influence on the selection of a suitable light source for a low-cost tonometer", Proc. SPIE 4916, Optics in Health Care and Biomedical Optics: Diagnostics and Treatment, (12 September 2002); https://doi.org/10.1117/12.482991

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