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KMID : 1011420120170020209
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Journal of Korean Ophthalmic Optics Society
2012 Volume.17 No. 2 p.209 ~ p.213
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Repeatability of Monocular Spherical Endpoints Test
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Kim Sang-Yeob
Moon Byeong-Yeon
Cho Hyun-Gug
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Abstract
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Purpose: To assess the repeatability of the monocular spherical endpoints, a test was performed with four methods which are the retinoscopy, the MPMVA (maximum plus maximum visual acuity) method, the R/G duochrome
method, and the crossed cylinder method.
Methods: The monocular spherical endpoints was measured by four kinds of method (Retinoscopy, MPMVA method, R/G duochrome method, Crossed cylinder method) on 20 subjects (40 eyes) of average age 23.0 year-old men and women. After a week, retest was performed by same procedure and the test-retest repeatability was assessed by using the Bland-Altman plot analysis.
Results: The test-retest mean difference of retinoscopy was the smallest diopters of ?0.03 and that of R/G duochrome method was the largest diopters of ?0.19. The upper/lower 95% limits of agreement for repeatability was the narrowest in retinoscopy and was the widest in crossed cylinder method. When compared the spherical endpoints of each eye between by retinoscopy and by other three methods, the error rate of ±0.25D in total eyes was 85% in MPMVA
method, 80% in R/G duochrome method, and 24% in crossed cylinder method.
Conclusions: Test-retest repeatability is the highest in the retinoscopy, and the retinoscopy, the MPMVA method, and R/G duochrome method are suitable for monocular spherical endpoints test.
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KEYWORD
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Spherical endpoints, Repeatability, Retinoscopy, MPMVA, R/G duochrome method, Crossed cylinder method
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