Reproducibility of morphoscopic contrast sensitivity testing with the visual capacity analyzer

Hyung Kuen Lee, Hwan Koh, Chul Myong Choe, chanyun kim, Young Jae Hong, Gong Je Seong

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Purpose: To determine the reproducibility of morphoscopic contrast sensitivity test values in healthy subjects using the Visual Capacity Analyzer (VCA) (L2 Informatique). Setting: Institute of Vision Research, Department of Ophthalmology, Yong-Dong Severance Hospital, Yonsei University, Seoul, South Korea. Methods: Five healthy volunteers were recruited for this study. With the VCA, 1 eye of each person was tested with different sized letters displayed on a computer screen at 11 spatial frequencies ranging from low (3.0 cycles/deg [cpd]) to high (30.0 cpd). The measurement was repeated 5 times under 2 screen luminance levels (maximum and 3 cd/m2) Results: Under maximum luminance background, the coefficient of variation (CV) and reliability coefficient (RC) at the spatial frequencies examined ranged from 4.3% to 35.0% and 89.1% to 99.8%, respectively. Under a screen luminance of 3 cd/m 2, the CV ranged from 0.5% to 15.9% and the RC, from 97.5% to 100.0%. Conclusion: At the spatial frequencies examined, morphoscopic contrast sensitivity testing using the VCA had a high level of reproducibility and may be useful in measuring a patient's visual function in the actual environment.

Original languageEnglish
Pages (from-to)1776-1779
Number of pages4
JournalJournal of Cataract and Refractive Surgery
Volume29
Issue number9
DOIs
Publication statusPublished - 2003 Sep 1

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Contrast Sensitivity
Healthy Volunteers
Republic of Korea
Ophthalmology
Seoul

All Science Journal Classification (ASJC) codes

  • Surgery
  • Ophthalmology
  • Sensory Systems

Cite this

Lee, Hyung Kuen ; Koh, Hwan ; Choe, Chul Myong ; kim, chanyun ; Hong, Young Jae ; Seong, Gong Je. / Reproducibility of morphoscopic contrast sensitivity testing with the visual capacity analyzer. In: Journal of Cataract and Refractive Surgery. 2003 ; Vol. 29, No. 9. pp. 1776-1779.
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Reproducibility of morphoscopic contrast sensitivity testing with the visual capacity analyzer. / Lee, Hyung Kuen; Koh, Hwan; Choe, Chul Myong; kim, chanyun; Hong, Young Jae; Seong, Gong Je.

In: Journal of Cataract and Refractive Surgery, Vol. 29, No. 9, 01.09.2003, p. 1776-1779.

Research output: Contribution to journalArticle

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AU - Koh, Hwan

AU - Choe, Chul Myong

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AU - Seong, Gong Je

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