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Optic disc measurements in normal subjects by computerized image analysis



Optic disc measurements in normal subjects by computerized image analysis



Nippon Ganka Gakkai Zasshi 92(11): 1889-1895



We measured 124 optic nerve heads of 74 normal subjects, using a computerized image analysis (Rodenstock Optic Nerve Head Analyzer Plus). The mean magnification-corrected measurements (.+-. standard deviation) were 2.428 .+-. 0.433mm2 for the optic disc area, 1.645 .+-. 0.449mm2 for the rim area, 0.792 .+-. 0.386mm2 for the cup area and 0.338 .+-. 0.162mm3 for the cup volume. A significantly positive correlation (.gamma. = 0.60) was found between the disc area and rim area. From these results, rim area was thought to depend on disc area in normal subjects. The normal range of rime area for various sizes of disc area should be established in order to detect early damages to the rim area in glaucoma.

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Accession: 007619043

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PMID: 3228039


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