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Proceedings Paper

Evaluation of the performance of crystalline lens refilled with polymer gel with an improved ex vivo accommodation simulator
Author(s): Klaus Ehrmann; Arthur Ho
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Paper 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.

Paper Details

Date Published: 18 April 2005
PDF: 12 pages
Proc. SPIE 5688, Ophthalmic Technologies XV, (18 April 2005); doi: 10.1117/12.599223
Show Author Affiliations
Klaus Ehrmann, Univ. of New South Wales Vision CRC (Australia)
Arthur Ho, Univ. of New South Wales Vision CRC (Australia)


Published in SPIE Proceedings Vol. 5688:
Ophthalmic Technologies XV
Fabrice Manns; Bruce E. Stuck; Michael Belkin M.D.; Per G. Söderberg; Arthur Ho, Editor(s)

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