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Journal of Biomedical Optics

Assessing the effect of laser beam width on quantitative evaluation of optical properties of intraocular lens implants
Author(s): Bennett N. Walker; Robert H. James; Aurin Chakravarty; Don Calogero; Ilko K. Ilev
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Paper Abstract

The design and manufacture of intraocular lenses (IOLs) depend upon the identification and quantitative preclinical evaluation of key optical properties and environmental parameters. The confocal laser method (CLM) is a new technique for measuring IOL optical properties, such as dioptric power, optical quality, refractive index, and geometrical parameters. In comparison to competing systems, the CLM utilizes a fiber-optic confocal laser design that significantly improves the resolution, accuracy, and repeatability of optical measurements. Here, we investigate the impact of changing the beam diameter on the CLM platform for the evaluation of IOL dioptric powers. Due to the Gaussian intensity profile of the CLM laser beam, the changes in focal length and dioptric power associated with changes in beam diameter are well within the tolerances specified in the ISO IOL standard. These results demonstrate some of the advanced potentials of the CLM toward more effectively and quantitatively evaluating IOL optical properties.

Paper Details

Date Published: 9 May 2014
PDF: 4 pages
J. Biomed. Opt. 19(5) 055004 doi: 10.1117/1.JBO.19.5.055004
Published in: Journal of Biomedical Optics Volume 19, Issue 5
Show Author Affiliations
Bennett N. Walker, U.S. Food and Drug Administration (United States)
Robert H. James, U.S. Food and Drug Administration (United States)
Aurin Chakravarty, U.S. Food and Drug Administration (United States)
Don Calogero, U.S. Food and Drug Administration (United States)
Ilko K. Ilev, U.S. Food and Drug Administration (United States)

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