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RESEARCH PAPERS

Asymptotic Rate Process Calculations of Thermal Injury to the Retina Following Laser Irradiation

[+] Author and Article Information
L. A. Priebe

Electrical Engineering, The University of Texas, Austin, Tex.

A. J. Welch

Bio-Medical and Electrical Engineering, The University of Texas, Austin, Tex.

J Biomech Eng 100(1), 49-54 (Feb 01, 1978) (6 pages) doi:10.1115/1.3426189 History: Received October 03, 1977; Online October 21, 2010

Abstract

Thermal damage to the retina following laser irradiation may be predicted using impulse and steady asymptotes derived from a first-order rate process and a simple thermal model for two time domains. Effects which have been observed experimentally in the short pulse (<10−4 s) region such as changes in energy per unit area for threshold damage as a function of image diameter may be explained with this model. The model allows rapid damage prediction without extensive calculations of temperature increase which normally require a large computer. Thermal damage to the ocular fundus resulting from a long pulse exposure may also be easily described with a simple steady-state model for temperature increase and damage.

Copyright © 1978 by ASME
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