Korean Journal of Optometry and Vision Science 2007;6(1):1-6.
Published online December 20, 2007.
디지털 안저사진을 이용한 안구 회선의 측정
서종모, 김광기, 김종효, 박광석, 정흠
1Department of Ophthalmology, Dongguk University College of Medicine, 2Biomedical Engineering Branch, National Cancer Center Research Institute, Departments of 3Radiology, 4Biomedical Engineering 5Ophthalmology, Seoul National University College of Medicine, Seoul, Korea
Measurement of Ocular Torsion using Digital Fundus Image
Jong-Mo Seo, Kwang Gi Kim, Jong-Hyo Kim, Kwang-Suk Park, Hum Chung
Abstract
Purpose
Computer-based objective measurement of the ocular cyclotorsion using digital fundus photograph was developed and the result was compared with that of the ophthalmologist. Methods: One hundred cases of the color digital fundus photographs acquired with the field angle of 60o, 1,520×1,080 in resolution were analyzed. Optic disc and macula were segmented with the program developed by authors on MATLAB. The angle between the horizontal line running through the center of the optic disc and the line connecting the center of optic disc and macula was measured, and compared with the torsion determined by the ophthalmologist. Results: Optic disc and macula were segmented and the mean of the calculated angle was 3.02±1.24o. The mean of the torsion determined by the ophthalmologist was 3.13±1.98o and there was no difference between the two (p>0.05; paired t-test). Conclusions: The measurement of the cyclotorsion using computer program showed good coincidence with that of the ophthalmologist and it will help precise diagnosis and the objective evaluation of the disease for the physicians. (Korean J Optom Vis Sci 2007;6(1):1-6)
Key Words: Computer-assisted diagnosis, Fundus photograph, Ocular cyclotorsion
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