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Reproducibility of morphoscopic contrast sensitivity testing with the Visual Capacity Analyzer.

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/m2, 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.

journal_name

J Cataract Refract Surg

journal_title

Journal of cataract and refractive surgery

authors

Lee HK,Koh IH,Choe CM,Kim CY,Hong YJ,Seong GJ

doi

10.1016/s0886-3350(03)00044-0

subject

Has Abstract

pub_date

2003-09-01 00:00:00

pages

1776-9

issue

9

eissn

0886-3350

issn

1873-4502

pii

S0886335003000440

journal_volume

29

pub_type

杂志文章

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