Effects of Astigmatism on Visual Performance through Periscopes at Night

Abstract

Detection thresholds for a target light by observers with various degrees of astigmatic error (ranging from 0 to 6 diopters) were compared through the old and new periscopes at night without the benefit of electro-optical aids. The results conformed with those obtained during daytime viewing using a completely different task. For example, observers with 4 D of astigmatism could see virtually as well through the new 12 power periscope as observers with 2 D (the maximum allowed under present Navy standards) could see through the old periscope.

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Document Details

Document Type
Technical Report
Publication Date
May 05, 1980
Accession Number
ADA085295

Entities

People

  • Christine L. Schlichting
  • Jo Ann S. Kinney
  • S. M. Luria

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Astigmatism
  • Biomedical Research
  • Classification
  • Daylight
  • Detection
  • Eye Diseases
  • Magnification
  • Observers
  • Optical Equipment
  • Periscopes
  • Security
  • Standards
  • Submarine Bases
  • Submarines
  • Television Equipment
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Circadian Sleep-Wake Regulation and Chronobiology
  • Vision Science/Vision Psychology/Cognitive Neuroscience.