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Proceedings Paper

Subnanosecond single laser pulse minimum-visible-lesion studies in the near infrared
Author(s): William P. Roach; Cheryl Dawn DiCarlo; Gary D. Noojin; David J. Stolarski; Rodney E. Amnotte; Val Caruthers; Benjamin A. Rockwell; Clarence P. Cain
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Paper Abstract

Lacking established national laser safety standards for sub-nanosecond, single pulse laser systems operating in the visible to near infrared spectral regions has resulted in research efforts designed to define the risks associated with human ocular exposure. The bulk of this work has been focused on visible wavelength laser pulses and resulting retinal threshold damage. We report threshold measurements for Minimum Visible Lesions (MVL) at the retina for picosecond (ps) laser pulses in Macaca Mulatta eyes using near infrared wavelengths (80 ps and 1064 nm). The 50% probability for damage (ED50) dosages are calculated for 1 hour and 24 hour post exposures using the SAS probit analysis. The MVL ED50 threshold and the fiducial limits at the 95% confidence level were found to be 4.16 (3.00 - 5.77) microjoules ((mu) J). Fluorescein angiography (FA) was accomplished at both 1 hour and 24 hour post exposure, however the analysis for FA is currently underway and results will not be reported here.

Paper Details

Date Published: 7 May 1996
PDF: 9 pages
Proc. SPIE 2681, Laser-Tissue Interaction VII, (7 May 1996); doi: 10.1117/12.239597
Show Author Affiliations
William P. Roach, Air Force Armstrong Lab. (United States)
Cheryl Dawn DiCarlo, Uniformed Services Univ. of the Health Sciences (United States)
Gary D. Noojin, The Analytic Sciences Corp. (United States)
David J. Stolarski, The Analytic Sciences Corp. (United States)
Rodney E. Amnotte, Air Force Armstrong Lab. (United States)
Val Caruthers, The Analytic Sciences Corp. (United States)
Benjamin A. Rockwell, Air Force Armstrong Lab. (United States)
Clarence P. Cain, The Analytic Sciences Corp. (United States)


Published in SPIE Proceedings Vol. 2681:
Laser-Tissue Interaction VII
Steven L. Jacques, Editor(s)

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