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RESEARCH PAPERS

Threshold Lesion Temperatures in Argon Laser-Irradiated Rabbit Eyes

[+] Author and Article Information
G. D. Polhamus, A. J. Welch

Bio-Medical Engineering Program, The University of Texas at Austin, Austin, Texas

J. Heat Transfer 97(3), 457-462 (Aug 01, 1975) (6 pages) doi:10.1115/1.3450398 History: Received October 07, 1974; Online August 11, 2010

Abstract

The purpose of this research was to measure threshold temperatures corresponding to the formation of minimum ophthalmoscopically visible lesions induced in rabbit ocular fundi by a 10-s exposure from an argon c. w. laser (4880 Å). The backside of the eye was surgically exposed and a specially designed microthermocouple with a 20-micron dia tip was inserted into the pigment epithelium to measure temperature rises. The mean threshold temperature for 30 measurements in 13 rabbits was 54° C and the standard deviation was 3° C. System error was estimated at 5 percent of temperature rise, or slightly less than ±1/2° C.

Copyright © 1975 by ASME
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