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KMID : 0360220230640111030
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Journal of the Korean Ophthalmological Society
2023 Volume.64 No. 11 p.1030 ~ p.1040
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Validation and Reliability of the Cataract-related Visual Function Questionnaire (CVFQ)
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Koh Eun-Jin
Lee Jong-Min
Lim Dong-Hui
Kang Dan-Bee
Cho Ju-Hee
Song Min-Kyung
Chung In-Kwon
Choi Hun-Jin
Chang Ji-Woong
Lee Jong-Hyun
Chung Tae-Young
Eom Young-Sub
Chun Yeoun-Sook
Chung So-Hyang
Kim Eun-Chul
Hyon Joon-Young
Lee Do-Hyung
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Abstract
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Purpose: To evaluate the reliability and validity of the Cataract-related Visual Function Questionnaire (CVFQ).
Methods: A prospective cross-sectional study of 141 cataract patients was conducted from March 2022 to June 2022. The questionnaire was created based on a literature review and advice from an expert panel. This study determined its construct validity, criterion validity, internal consistency, and test-retest reliability.
Results: The CVFQ consists of 15 items distributed among five categories: overall visual quality, overall visual function, distance vision, near vision, and glare. In the exploratory factor analysis of validity, the first three principal components explained 77.8% of the variance. The p-values in the Spearman correlation test comparing the pre- and postoperative total CVFQ score and best-corrected visual acuity (BCVA) were 0.006 and 0.004, respectively. In the reliability analysis, Cronbach’s alpha was > 0.9 for internal consistency and the p-values of each subcategory were all significant in the analysis of test-retest reliability.
Conclusions: Our results indicate that the CVFQ is useful for measuring the visual quality and visual function of cataract patients in Korea.
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KEYWORD
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Cataract, Surveys and questionnaires, Vision
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