A comparison of central visual field measurement by automated perimetry in optic neuritis due to multiple sclerosis and of unknown etiology
Fujimoto, N.
Nippon Ganka Gakkai Zasshi 93(5): 581-586
1989
ISSN/ISBN: 0029-0203 PMID: 2801361 Document Number: 341559
We compared the visual field in 46 eyes of 34 cases with optic neuritis, which inlcuded 17 cases with multiple sclerosis (MS) and 17 cases with unknown causes. The visual field examination was measured by program 31 of the Octopus automated perimeter, which tests the central 30.degree. field in a 6-degree grid. All eyes had visual acuity of 0.2 or better. The mean visual acuity was 0.97 in MS and 0.83 in the unknown etiology cases. There were no differences in the rate of abnormalities in the 30.degree.-field between MS and unknown cases. The mean sensitivity loss of the abnormal visual field with MS was significantly greater than that of the unknown cases. The 30.degree. field was divided into 3 sections. MS had almost the same mean sensitivity loss in each section. The cases of unknown etiology had a greater mean loss in 0-10.degree. than that in the other sections. We could conclude therefore that diffuse visual field loss was caused by MS and central depression of 0-10.degree. in the 30.degree. field was secondary to an unknown cause. In comparison to the affected eyes seventeen eyes with normal visual acuity and no hisotry of optic neuritis were tested by program 31. Results showed that 3 eyes had abnormal points in 10-30.degree. sections.