Threshold Lesion Temperatures in Laser-Irradiated Rabbit Eyes

Abstract

The purpose of this research was to measure threshold temperatures corresponding to the formation of minimum ophthalmoscopically visible lesions induced in rabbit fundi by a ten-second exposure from an argon C. W. laser (4880A). The posterior pole of the eye was surgically exposed and a specially designed microthermocouple with a 20-micron diameter tip was inserted into the ocular fundus to measure temperature rises. The mean threshold temperature for 30 measurements in 13 rabbits was 54C. System error was estimated at 5% of temperature rise, or slightly less than 1C.

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Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1975
Accession Number
ADA015943

Entities

People

  • A. J. Welch
  • G. D. Polhamus

Organizations

  • University of Texas at Austin

Tags

Communities of Interest

  • Biomedical
  • Sensors
  • Weapons Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Argon Lasers
  • Data Analysis
  • Detectors
  • Diameters
  • Engineering
  • Equations
  • Eye
  • Heat Energy
  • Laboratory Procedures
  • Laser Beams
  • Laser Pulses
  • Lasers
  • Light Sources
  • Measurement
  • Power Measurement
  • Specific Heat

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Thermal Physics or Thermal Science.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.

Technology Areas

  • Directed Energy
  • Directed Energy - Lasers
  • Directed Energy - Pulsed-Laser Deposition