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Abstract #9702 Published in IGR 5-3
A comparison of visual field and optic disc appearance depending on the peak intraocular pressure in patients with normal-tension glaucoma
Ishikawa K; Tanino T; Ohtake Y; Kimura I; Miyata H; Mashima YNippon Ganka Gakkai Zasshi 2003; 107: 433-439
PURPOSE: To investigate the clinical differences between two groups depending on the peak intraocular pressure (IOP) in patients with normal-tension glaucoma (NTG). METHODS: The authors studied 96 eyes of 48 NTG patients who were hospitalized for diurnal IOP measurement. Then they selected the eye whose peak IOP was higher, or the right eye if the peak IOP of both eyes was equal. They divided these eyes into a 'high-teen' group (peak IOP ≥ 16 mmHg) and a 'low-teen' group (peak IOP ≤ 15 mmHg). The authors compared these two groups by age, gender, refraction, IOP, visual field defect, optic disc appearance, and tomograph. They used a Humphrey C 30-2 program to estimate the visual field defect and classified the optic disc into four types according to Nicolela's criteria. Twenty-two eyes were imaged with Heidelberg Retina Tomograph (HRT) in order to obtain topographic parameters of the optic disc. RESULTS: There were no significant differences in age, gender, refraction, optic disc appearance, or tomograph between two groups. The trough and variation range of diurnal IOP were significantly larger in the high-teen group (p < 0.01). The value of mean deviation(MD) given by STATPAC was statistically lower in the high-teen group (p < 0.01). CONCLUSIONS: In patients with NTG, the visual field damage tended to be greater in the high-teen than in the low-teen group. The authors surmise that the IOP might influence the progression of visual field defect in NTG. LA: Japanese
Dr. K. Ishikawa, Department of Ophthalmology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan
Classification:
2.14 Optic disc (Part of: 2 Anatomical structures in glaucoma)
9.2.4 Normal pressure glaucoma (Part of: 9 Clinical forms of glaucomas > 9.2 Primary open angle glaucomas)
6.6.2 Automated (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)