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Contrast sensitivity measurement with 2 contrast sensitivity tests in normal eyes and eyes with cataract.

Authors
 Young Taek Hong  ;  Sang Woo Kim  ;  Eung Kweon Kim  ;  Tae-im Kim 
Citation
 JOURNAL OF CATARACT AND REFRACTIVE SURGERY, Vol.36(4) : 547-552, 2010 
Journal Title
 JOURNAL OF CATARACT AND REFRACTIVE SURGERY 
ISSN
 0886-3350 
Issue Date
2010
MeSH
Adult ; Aged ; Aged, 80 and over ; Cataract/physiopathology* ; Contrast Sensitivity/physiology* ; Humans ; Lens Implantation, Intraocular ; Middle Aged ; Phacoemulsification ; Reference Values ; Reproducibility of Results ; Vision Tests/methods* ; Visual Acuity/physiology
Abstract
PURPOSE: To assess the reliability of and correlation between 2 contrast sensitivity tests in normal eyes and eyes with cataract. SETTING: Department of Ophthalmology, Yonsei University Hospital, Seoul, Korea. METHODS: The Vision Contrast Test System (wall-chart test) and Optec 6500 system (view-in test) were used to measure contrast sensitivity in normal eyes at 2 visits separated by 2 weeks and in eyes with cataract before and 2 months after cataract surgery. The test-retest reliability and correlation were calculated by the intraclass correlation coefficient (ICC), coefficient of repeatability (COR), and 95% range of difference using the Bland-Altman method. RESULTS: The study evaluated 40 normal eyes of 20 subjects and 44 eyes of 38 cataract patients. The repeatability of the 2 test methods was generally acceptable. The view-in test performed better than the wall-chart test in the ICC analysis (0.85 versus 0.65) but not in the COR analysis (+/-0.20 log versus +/-0.27 log). Correlation between the 2 tests was poor in both groups of eyes. The ceiling effect was greater with the wall-chart test. The floor effect occurred mainly in patients with cataract, in which it was greater preoperatively than postoperatively; at high frequency; and with the view-in test. CONCLUSION: Based on the ceiling and floor effect, the view-in test is better for detecting subtle contrast sensitivity changes in normal or near-normal eyes and the wall-chart test is useful in eyes with compromised vision. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned
Full Text
http://www.sciencedirect.com/science/article/pii/S0886335010000957
DOI
10.1016/j.jcrs.2009.10.048
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sang Woo(김상우)
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
Kim, Tae Im(김태임) ORCID logo https://orcid.org/0000-0001-6414-3842
Hong, Young Taek(홍영택)
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/100815
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