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Binocular Visual Functions Effect of Vision Therapy Programs : A Meta-Analysis

Vision Therapy 프로그램의 양안시기능 개선 효과에 대한 메타분석

  • Lee, Jeong-Yun (Dept. of Optometry, Sunlin College University) ;
  • Park, Chun Man (Dept. of Public Health, Graduate school, Keimyung University)
  • 이정윤 (선린대학교 안경광학과) ;
  • 박천만 (계명대학교 대학원 공중보건학과)
  • Received : 2015.04.09
  • Accepted : 2015.05.28
  • Published : 2015.06.30

Abstract

Purpose: In order to aggregate effect of the improvement of binocular vision function by vision therapy, total mean effect size, mean effect size by dependent variables, and effect size by characteristics of the subjects and characteristics of treatment were analyzed by meta-analysis. Methods: We analyzed data from 14 Korean National primary studies, which reported effects of vision therapy programs, using meta-analysis. Results: The effect size of total mean was 1.207, which showed high effect. The mean effect size according to the subcategory of the binocular dysfunctions was the highest for vergence dysfunctions group (2.989), followed by accommodative dysfunctions group (0.868) and group with both vergence dysfunctions and accommodative dysfunctions (0.692). The effect size according to the characteristics of the subjects was the highest in the vision therapy conducted in the binocular dysfunctions group (2.509) that had no other dysfunctions. The mean effect size according to the number of programs was the highest (2.310) for 7 times a week. Vision therapy for improving the binocular functions was the most effective (2.019) in 8 weeks later from vision therapy start. Conclusions: It can prove that the therapy for the improvement of binocular vision function is effective through that each result of the vision therapy effect is converted to mean effect size, and being objectifying the mean effect size.

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