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Stereomorphometry of optic disc cupping with a computer image analyzer IMAGEnet Katsuhiko Nanba 1 , Motohiro Shirakashi 1 , Takeo Fukuchi 1 , Kazuo Iwata 1 1Dept of Ophthalmol, Niigata Univ Sch of Med pp.535-538
Published Date 1989/4/15
DOI https://doi.org/10.11477/mf.1410210716
  • Abstract
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We evaluated the reproducibility of optic disc cup measurements as processed by a computerized image analyzer, IMAGEnet (Topcon). We used simulaneous stereoscopic fundus photographs from 7 eyes. Two eyes manifested shallow cup, 2 tempo-ral cup and 3 deep cup. We took ten stereo-photographs for each eye at the same session. Each stereophotograph underwent ten repeated measure-ments.

We found the following values as mean coeffi-cients of variation ± standard deviation: 4.6±2.7%for vertical C/D,4.4±1.8%for rim area/disc area,5.0±1.6%for rim area,8.7±5.0%for horizontal C/D,and 14.6±6.8%for cup volume.Coefficients of vari-ation for horizontal C/D and cup volume weregreater in eyes with shallow or temporal cup thanin those with deep cup.

These results show that measurements of optic disc cupping with the present system can be reason-ably useful in the follow-up of disc changes in gaulcoma.


Copyright © 1989, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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