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Proceedings Paper

Thermal modeling of laser photothermo keratoplasty
Author(s): Zhiping James Zhou; Qiushi Ren; Gabriel Simon; Jean-Marie A. Parel
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Paper Abstract

Laser photo thermo keratoplasty (LPTK) is a refractive procedure that changes the curvature of the cornea by laser induced collagen shrinkage. To understand the temperature distribution induced by the laser radiation inside the cornea, a photo-thermal theoretical model is employed to simulate this process. The 4-D space-time temperature distributions within the cornea are calculated and depicted. The effects of the incident fluence and the laser spot size on temperature relaxation rate is discussed. Optimization of incident fluence on the surface of the cornea is made. The comparison between calculated and experimental regions of collagen shrinkage is given. Recommendations for the design of clinical surgery instruments are also presented.

Paper Details

Date Published: 14 August 1992
PDF: 11 pages
Proc. SPIE 1644, Ophthalmic Technologies II, (14 August 1992); doi: 10.1117/12.137405
Show Author Affiliations
Zhiping James Zhou, Univ. of Miami School of Medicine (United States)
Qiushi Ren, Univ. of Miami School of Medicine (United States)
Gabriel Simon, Univ. of Miami School of Medicine (United States)
Jean-Marie A. Parel, Univ. of Miami School of Medicine (United States)

Published in SPIE Proceedings Vol. 1644:
Ophthalmic Technologies II
Jean-Marie Parel, Editor(s)

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