A Portable Subject Controlled Night Vision Adaptometer.

Abstract

This report describes a new adaptometer which was designed at this Institute for assessing night vision parameters of the military population at field sites, and to quantify the effects of extended exposure to high altitude. The instrument is based on a previously developed concept of dark adaptation measurement in which the subject continually adjusts the threshold luminance of a recurrently flashing stimulus. This device, however, represents a modernized version of the technique which employs computerized data translation. It also offers the advantages of rugged construction and field portability. The instrument has functioned reliably in field conditions, and has generated valid dark adaptation functions on soldier test subjects in use at the USARIEM High Altitude Test Facility, Pikes Peak, Colorado. Keywords: adaptometer, brightness sensitivity, visual performance.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1985
Accession Number
ADA167848

Entities

People

  • Calvin Witt
  • John L. Kobrick
  • Jose Miletti

Organizations

  • United States Army Research Institute of Environmental Medicine

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Abstracts
  • Altitude
  • Biological Sciences
  • Biomedical Research
  • Brightness
  • Colorado
  • Control Knobs
  • Diagrams
  • High Altitude
  • Instrumentation
  • Measurement
  • Military Research
  • Night Vision
  • Schematic Diagrams
  • Test Facilities
  • United States
  • Ventilation Fans

Readers

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