J Korean Ophthalmol Soc.
1995 Jun;36(6):1056-1060.
Regional Dirfferences in The Stereometric Parameters of Optic Nerve Head in Primary Open Angle Glaucoma
- Affiliations
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- 1Department of Ophthalmology, College of Medicine, Seoul National University, Seoul, Korea.
Abstract
- To evaluate the regional differences in the stereometric parameters of optic nerve head in primary open angle glaucoma, we retrieved rim area, disc area, cup volume/disc area, and maximum depth in 6 predefined segements using mean topography measured with Heidelberg Retina Tomograph. Eleven eyes from 11 primary open angle glaucoma patients, whose mean defect in Humphrey C30-2 visual field was -4.2 +/- 2.6dB and intraocular pressure was 18.7 +/- 3.2mmHg, were enrolled in this study. The values of rim area/disc area were significantly different between segments(p<0.05), and increased in the order of temporal. temporoinferior, temporosuperior, nasal nasosuperior, and nasoinferior segment. The values of cup volume/disc area were also significantly different between segments(p<0.05), and decreased in the order of temporoinferior, temporosuperior, temporal, nasosuperior, nasal, and nasoinferior segment. However, the values of maximum depth were not significantly different between segments. These results suggest that optic nerve head damage in primary open angle glaucoma may be different according to the region.
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