Evaluation of the performance of crystalline lens refilled with polymer gel with an improved ex vivo accommodation simulator

Klaus Ehrmann; Arthur Ho

doi:10.1117/12.599223

18 April 2005 Evaluation of the performance of crystalline lens refilled with polymer gel with an improved ex vivo accommodation simulator

Klaus Ehrmann, Arthur Ho

Author Affiliations +

Proceedings Volume 5688, Ophthalmic Technologies XV; (2005) https://doi.org/10.1117/12.599223
Event: SPIE BiOS, 2005, San Jose, CA, United States

Abstract

The ex vivo accommodation simulator stretches crystalline lenses radially under controlled conditions, while monitoring the changes in zonular tension and lens diameter. A dual coaxial laser beam system was added for measuring changes in optical power as the lens is stretched. The EVAS instrument was fully characterized and calibrated. The results from 3 porcine eyes will be presented. Several crystalline lenses, similar in shape and size to porcine lenses, were cast molded in silicone gels of different stiffness. These lenses were evaluated using the EVAS instrument and custom made lens holding fixtures. With their well defined shape and material properties, results from these measurements will be useful for cross-validation of finite element models.

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Klaus Ehrmann and Arthur Ho "Evaluation of the performance of crystalline lens refilled with polymer gel with an improved ex vivo accommodation simulator", Proc. SPIE 5688, Ophthalmic Technologies XV, (18 April 2005); https://doi.org/10.1117/12.599223

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