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

Gabriela Apiou-Sbirlea; Jean Pierre L'Huillier

doi:10.1117/12.297844

22 December 1997 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

Gabriela Apiou-Sbirlea, Jean Pierre L'Huillier

Author Affiliations +

Proceedings Volume 3192, Medical Applications of Lasers in Dermatology, Ophthalmology, Dentistry, and Endoscopy; (1997) https://doi.org/10.1117/12.297844
Event: BiOS Europe '97, 1997, San Remo, Italy

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.

Citation Download Citation

Gabriela Apiou-Sbirlea and Jean Pierre L'Huillier "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", Proc. SPIE 3192, Medical Applications of Lasers in Dermatology, Ophthalmology, Dentistry, and Endoscopy, (22 December 1997); https://doi.org/10.1117/12.297844

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