Effect of Flash Field Size on Flashblindness in an Aircraft Cockpit

Abstract

Ten volunteers were exposed to high intensity double pulse light flashes with flash fields subtending 1, 3, 5, 10, and 15 degrees of visual angle. Flashblindness recovery times for several aircraft instruments were measured for each flash field diameter. Countermeasures including looking around the afterimage and body movement were permitted on some of the trials. Recovery time increased as the adapting flash visual angle was increased from 1 to 15 degrees. Instruments requiring a greater visual acuity to be read had substantially longer recovery times than instruments requiring less. The two countermeasures listed above were found to be helpful in reducing recovery time.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1970
Accession Number
AD0742864

Entities

People

  • William H. Cushman

Organizations

  • United States Air Force School of Aerospace Medicine

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Aerospace Medicine
  • Air Force
  • Air Force Facilities
  • Aircrafts
  • Airspeed Indicators
  • Altimeters
  • Analysis Of Variance
  • Education
  • Eye Diseases
  • Flashblindness
  • Flight Instruments
  • Flight Simulators
  • Light Sources
  • Numbers
  • Observers
  • Training
  • Visual Acuity

Readers

  • Aviation Science / Aeronautics.
  • Vision Science/Vision Psychology/Cognitive Neuroscience.