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Abstract #59659 Published in IGR 16-3
Initial scotomas in normal tension glaucoma
Mizoue S; Iwase A; Matsumoto S; Yoshikawa KNippon Ganka Gakkai Zasshi 2014; 118: 826-830
PURPOSE: To investigate risk factors for initial visual field pattern in normal tension glaucoma (NTG). PATIENTS AND METHODS: We studied 107 subjects, who underwent 24-2 or 30-2 Swedish interactive threshold algorithm standard visual fields as part of a multicenter study of newly diagnosed NTG patients. Only the eyes with initial parafoveal scotoma (IPFS) or initial nasal step (INS) Were included. IPFS was defined as a glaucomatous visual field (VF) defect in 1 hemifield (≥ 3 adjacent points with p < 5% within the central 10 degrees of fixation, ≥ 1 point with p < l% lying at the innermost paracentral points, and no VF abnormality outside the central 10 degrees). INS was defined in 1 hemifield (≥ 3 adjacent points with p < 5% in the nasal periphery outside 10 degrees of fixation, the nasal- most point with p < 1%, and no VF abnormality within the central 10 degrees). Clinical characteristics were compared between the 2 groups. RESULTS: Mean untreated intraocular pressure (IOP) (14.0 ± 1.3 vs. 16.0 ± l.4 mmHg; p = 0.0102) was significantly lower in patients with an IPFS than in patients with an INS. There were no significant differences in age (p = 0.6487) or spherical equivalent (p = 0.7561). CONCLUSION: Initial visual field pattern of NTG is influenced by untreated IOP level.
Classification:
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)
