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 language | English |
|---|---|
| Pages (from-to) | 1776-1779 |
| Number of pages | 4 |
| Journal | Journal of Cataract and Refractive Surgery |
| Volume | 29 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 2003 Sep 1 |
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All Science Journal Classification (ASJC) codes
- Surgery
- Ophthalmology
- Sensory Systems
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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 journal › Article
TY - JOUR
T1 - Reproducibility of morphoscopic contrast sensitivity testing with the visual capacity analyzer
AU - Lee, Hyung Kuen
AU - Koh, Hwan
AU - Choe, Chul Myong
AU - kim, chanyun
AU - Hong, Young Jae
AU - Seong, Gong Je
PY - 2003/9/1
Y1 - 2003/9/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0141866702&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0141866702&partnerID=8YFLogxK
U2 - 10.1016/S0886-3350(03)00044-0
DO - 10.1016/S0886-3350(03)00044-0
M3 - Article
C2 - 14522300
AN - SCOPUS:0141866702
VL - 29
SP - 1776
EP - 1779
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
SN - 0886-3350
IS - 9
ER -