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Frequency doubling technology (FDT) of screening program C-20-1 was used on 101 eyes of 101 primary open-angle glaucoma patients (mean age : 59.6 years) without noticing their visual field defects. Each patients recorded the locations of the visual field defects just after the examination. Thirty-six patients (35.6%) noticed their visual field defects, and their recordings corresponded to the results of FDT The other 65 patients (64.4%) noticed no abnormality. The frequency of self-consciousness was 10.0% in stage 0 ˜ 1, 16.7% in stage 1, 34.5% in stage 2, 44.4% in stage 3, 43.8% in stage 4, 70.0% in stage 5, according to Aulhorn's classification modified by Greve. FDT was considered to be useful for self-consciousness of visual field defects. LA: Japanese
Dr. H. Katsushima, Katsushima Eye Clinic, Nishi 14-3-1, Odori Sapporo 060-0042, Japan
6.6.3 Special methods (e.g. color, contrast, SWAP etc.) (Part of: 6 Clinical examination methods > 6.6 Visual field examination and other visual function tests)