Human eye modeling using a single equation of gradient index crystalline lens for relaxed and accommodated states

Yanqiao Huang; Duncan T. Moore

doi:10.1117/12.692201

12 July 2006 Human eye modeling using a single equation of gradient index crystalline lens for relaxed and accommodated states

Yanqiao Huang, Duncan T. Moore

Author Affiliations +

Proceedings Volume 6342, International Optical Design Conference 2006; 63420D (2006) https://doi.org/10.1117/12.692201
Event: International Optical Design Conference 2006, 2006, Vancouver, BC, Canada

Abstract

The human crystalline lens is a layered structure. Unique protein solution in each individual cell layer gives a different refractive index value thus resulting in a gradient index (GRIN) lens. Crystalline lens GRIN not only provides extra optical power for both relaxed and accommodated eyes, but presumably plays an important role in balancing/reducing eye aberrations and maintaining image quality. In existing eye models, the crystalline lens is either treated as a homogeneous lens or a GRIN lens but with two separate GRIN equations for anterior and posterior segment due to its asymmetrical index distribution along the optical axis. In this study, a single continuous GRIN equation with optical power variability is constructed. A dynamic eye model incorporating this equation for various accommodative states is proposed and simulated in CODEV.

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Yanqiao Huang and Duncan T. Moore "Human eye modeling using a single equation of gradient index crystalline lens for relaxed and accommodated states", Proc. SPIE 6342, International Optical Design Conference 2006, 63420D (12 July 2006); https://doi.org/10.1117/12.692201

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