WIT Press

A Powerful Finite Element For Analysis Of Argon Laser Iridectomy: Influence Of Natural Convection On The Human Eye

Price

Free (open access)

Paper DOI

10.2495/BIO970071

Volume

4

Pages

13

Published

1997

Size

955 kb

Author(s)

G. Sbirlea & J.P. L'Huillier

Abstract

A 3-D numerical model of the human eye is developed to study the conduction and convection heat transfer due to an argon laser iridectomy and to explain in which way the corneal burns and lens opacities depend on the laser parameters. The equations of mass, momentum and energy conservation, supplemented by boundary and initial conditions are discretized in three spatial dimensions and in time according to respectively the finite element method and to an implicite integration scheme. The contraction burn process was studied using shot of 0.5 s in duration, 0.5 mm in size and a power level of 0.4 W. The influence of the natural convection and the phenomena of cornea and lens overheating are presented an

Keywords