RESEARCH ON OCULAR EFFECTS PRODUCED BY THERMAL RADIATION

Abstract

A modified Meyer-Schwickerath photo coagulator was developed to study the production of thermal lesions in rabbits and primates. Complete operating and maintenance instructions for the coagulator and an associated exposure control unit are given. The method of calibration, calibration results, and a comparison between directly measured total irradiance and spectral irradiance integrated over wavelength are reported. Minimal retinal burns were produced in pigmented rabbits by high-intensity light flashes ranging from 165 microseconds to 250 milliseconds in duration and 1.0 to 0.11 mm. in image diameter. Relationships were obtained between exposure duration and threshold irradiance for minimal lesions. Calculated retinal temperature increases were compared to observable retinal effects. In addition, luminous energy output of two Honeywell Strobonar flash units was measured and is reported.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1966
Accession Number
AD0638642

Entities

People

  • Earl R. Lawler Jr.
  • Ralph G. Allen
  • Roger L. Bessey
  • Thomas A. Alexander
  • William R. Bruce

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Biomedical
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Aerospace Medicine
  • Air Force
  • Biological Sciences
  • Calibration
  • Cameras
  • Electron Tubes
  • Lasers
  • Light Pulses
  • Light Sources
  • Measurement
  • Medical Personnel
  • Photographs
  • Power Supplies
  • Switches
  • Temperature Gradients
  • Thermal Conductivity
  • Waveform Generators

Fields of Study

  • Physics

Readers

  • Aerospace Test and Evaluation
  • Spectroscopy.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.