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Abstract #5714 Published in IGR 2-1
Association between watershed zone and visual field defect in normal tension glaucoma
Sato Y; Tomita G; Onda E; Goto Y; Oguri A; Kitazawa YJapanese Journal of Ophthalmology 2000; 44:39-45
PURPOSE: To evaluate the association between the watershed zone and glaucomatous optic nerve head (ONH) damage. METHODS: The authors performed indocyanine green fluorescence angiography with a scanning laser ophthalmoscope in 54 eyes of 27 patients with normal tension glaucoma (NTG). RESULTS: They identified seven eyes of eight patients (14.8%) with a watershed zone not including the ONH, 32 eyes of 20 patients (59.3%) with the watershed zone partially including the ONH, and ten eyes of 14 NTG patients (25.9%) with the watershed zone including the ONH. Of the 27 NTG patients, ten (37.0%) had different types in each eye. CONCLUSIONS: In these patients, the mean deviation of visual field indices was greater in the eye with the watershed zone, which included a larger part of the ONH than in the contralateral eye. Conversely, the eye with the greater mean deviation had a watershed zone that included a larger part of the ONH. The location of the watershed zone appeared to influence the progression of the visual field defect.
Dr. Y. Sato, Department of Ophthalmology, Gifu University School of Medicine, Gifu-ken, Japan
Classification:
9.2.4 Normal pressure glaucoma (Part of: 9 Clinical forms of glaucomas > 9.2 Primary open angle glaucomas)
