Refractive Error Change at the United States Air Force Academy - Class of 1985.

Abstract

A retrospective refractive error study was made at the USAF Academy (n = 497, 17-21 yrs old) for the 2.5 year period between entrance and third year exams. The entrances SPEQ refractive errors were 37.3%, 18.5%, and 44.2% hyperopes, emmetropes, and myopes, respectively. A significant (p < 0.01) mean SPEQ change of -0.18, -0.21, and -0.57 D occured for the hyperopic, emmetropic, ans myopic eyes, respectively. Myopia progression, derived from eyes showing a myopic shift, was -0.42, -0.52, and -0.75 D for the hyperopic, emmetropic, and myopic eyes, respectively. A myopic shift sufficient to cause a change in pilot status (>or= -0.25 D) occurred in a high percentage of each refractive error type, and was 47.7% of hyperopes, 41.3% of emmetropes, and 74.0% of myopes, and a clinically significant myopic shift of > or = -0.50 D was seen in 21.3%, 25.0%, 55.1% of each type, respectively. This report supplies detailed information on the incidence and rate of myopia progression at the USAF Academy.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1986
Accession Number
ADA175341

Entities

People

  • Melvin R. O'neal
  • Thomas R. Connon

Organizations

  • Armstrong Laboratory

Tags

Communities of Interest

  • Biomedical

DTIC Thesaurus Topics

  • Age Groups
  • Air Force
  • Biomedical Research
  • Data Analysis
  • Engineering
  • Eye Diseases
  • Flight Training
  • Health Services
  • Human Factors Engineering
  • Medical Personnel
  • Security
  • Statistical Analysis
  • Students
  • Training
  • United States
  • United States Air Force Academy
  • Universities

Fields of Study

  • Medicine

Readers

  • Mathematical Modeling and Probability Theory.
  • Personnel Management and Statistics in the Military and Department of Defense
  • Vision Science/Vision Psychology/Cognitive Neuroscience.