| Repeatability and Validity of the VAA-2000 Automated Self Vision Tester. |
|
Hyun Ju Kee, Hee Kyung Yang |
|
Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea. eye@snubh.org |
| VAA-2000 자가시력검사기의 재현성과 유효성 |
|
기현주⋅양희경 |
|
서울대학교 의과대학 분당서울대학교병원 안과학교실 |
Correspondence:
Hee Kyung Yang,
Email: eye@snubh.org
|
|
Received: 27 October 2016 • Revised: 29 November 2016 • Accepted: 17 January 2017 |
| Abstract |
PURPOSE
To evaluate the test-retest reliability and validity of the VAA-2000 Self Vision Tester. METHODS: A total of 108 eyes of 108 adults (55 men and 53 women) who visited Seoul National University Bundang Hospital from March to December 2015 and who had best corrected visual acuities of 20/200 or better, according to both Hahn's visual acuity test (using numbers and Landolt rings) and the VAA-2000 Self Vision Tester, were included. The test-retest reliability and validity of the VAA-2000 Self Vision Tester were assessed and compared with Hahn's visual acuity test performed using numbers and Landolt rings. The intraclass correlation, Pearson correlation, Bland-Altman plots, and Deming regression between the different tests were analyzed. RESULTS: The average best corrected visual acuity was 0.12 ± 0.17 logMAR measured with the VAA-2000 Self Vision Tester, and was 0.08 ± 0.20 logMAR with Hahn's visual acuity test using numbers and 0.08 ± 0.30 logMAR using Landolt rings. The VAA-2000 Self Vision Tester demonstrated high test-retest reliability (intraclass correlation coefficient = 0.903, p < 0.001) and acceptable validity when compared with Hahn's visual acuity test using numbers (r = 0.767, p < 0.001) and Landolt rings (r= 0.727, p < 0.001). CONCLUSIONS: The VAA-2000 Self Vision Tester possesses good reliability and acceptable validity when compared to Hahn's visual acuity test using numbers and Landolt rings. |
| Key Words:
Automated visual acuity test;Hahn's visual acuity test;VAA-2000;Validity |
PDF Links
Full text via DOI
Download Citation
