Validation and Reliability of the Cataract-related Visual Function Questionnaire (CVFQ)
10.3341/jkos.2023.64.11.1030
- Author:
Eun Jin KOH
1
;
Jong Min LEE
;
Dong Hui LIM
;
Danbee KANG
;
Juhee CHO
;
Min Kyung SONG
;
In Kwon CHUNG
;
Hun Jin CHOI
;
Ji Woong CHANG
;
Jong Hyun LEE
;
Tae Young CHUNG
;
Young Sub EOM
;
Yeoun Sook CHUN
;
So Hyang CHUNG
;
Eun Chul KIM
;
Joon Young HYON
;
Do Hyung LEE
Author Information
1. Department of Ophthalmology, Ilsan Paik Hospital, Inje University College of Medicine, Goyang, Korea
- Publication Type:Original Article
- From:Journal of the Korean Ophthalmological Society
2023;64(11):1030-1040
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
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.
