[Microcomputer image analysis of surface parameters of the optic disk].
103 normal and 86 open-angle glaucoma optic disks were evaluated with the microcomputer image analyser. Except for the diameter and area, all other parameters of the normal disk differed significantly from those of the glaucomatous disk. The cup/rim area ratio in glaucoma was significantly larger, while the cup/disk area ratio was moderately so, indicating that the former was more useful in the early diagnosis of glaucoma. The microcomputer image analyser was reliable and accurate, also capable of processing blurred images from varying exposure and focussing. The quotient between the horizontal and vertical C/D ratios was a relatively stable value with changing glaucomatous cupping.
Liu
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Department of Ophthalmology, Second Teaching Hospital, Chongqing University of Medical Sciences.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000886:Anthropometry; D005260:Female; D005902:Glaucoma, Open-Angle / Q000473:pathology*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008297:Male; D008838:Microcomputers; D008875:Middle Aged; D009898:Optic Disk / Q000033:anatomy & histology / Q000473:pathology; D012016:Reference Values