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Proceedings Paper

Modeling and simulation of argon laser iridectomy based on a 3D finite-element method; influence of laser parameters and pathological eye situation on temperature history
Author(s): Gabriela Apiou-Sbirlea; Jean Pierre L'Huillier
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Paper Abstract

A 3D finite element model is developed to study the conduction and convection heat transfer due to an argon laser iridectomy in the human eye. The objective is to explain the appearance of two important postoperative complications reported by ophthalmologists: corneal burns and lens opacities. Contraction burn is studied using simple shot of 1 s in duration, 0.5 mm in size, 0.4 W in power and double laser shot of 0.5 s in duration, 0.5 mm in size, 0.4 W in power and 0.5 s of relaxation time. Iris tissue pyrolisis temperature threshold is included as onset of tissue removal. Two laser spot positions on the iris circumference are considered. The phenomena of cornea and lens overheating for both normal and pathological human eyes are presented and discussed.

Paper Details

Date Published: 22 December 1997
PDF: 14 pages
Proc. SPIE 3192, Medical Applications of Lasers in Dermatology, Ophthalmology, Dentistry, and Endoscopy, (22 December 1997); doi: 10.1117/12.297844
Show Author Affiliations
Gabriela Apiou-Sbirlea, Lab. of Advanced Instrumentation and Robotics/CER-ENSAM (France)
Jean Pierre L'Huillier, Lab. of Advanced Instrumentation and Robotics/CER-ENSAM (France)


Published in SPIE Proceedings Vol. 3192:
Medical Applications of Lasers in Dermatology, Ophthalmology, Dentistry, and Endoscopy
Gregory B. Altshuler; Reginald Birngruber; Marco Dal Fante; Raimund Hibst; Herbert Hoenigsmann; Neville Krasner; Frederic Laffitte, Editor(s)

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