The Effectiveness of Glaucomatous Visual Field Test Using a Size I Stimulus.

Accession number;99A0390124
Title;The Effectiveness of Glaucomatous Visual Field Test Using a Size I Stimulus.
Author; OSAKO MASAHIRO (Tokyo Medical College, Kasumigaura Hospital) OSAKO SENKO (Tokyo Medical College, Kasumigaura Hospital) HASHIMOTO KIYOE (Tokyo Medical College, Kasumigaura Hospital) OKANO TADASHI (Tokyo Medical College, Kasumigaura Hospital)
Journal Title;Journal of Japanese Ophthalmological Society
Journal Code:Z0666A
ISSN:0029-0203
VOL.103;NO.3;PAGE.201-207(1999)
Figure&Table&Reference;FIG.7, TBL.3, REF.19
Pub. Country;Japan
Language;Japanese
Abstract;Purpose: Perimetry using size I and III targets was conducted on glaucoma patients. The detectability of the visual field defects using a size I target and abnormal spatial summation was investigated. Subjects & Methods: Subjects were 14 eyes of 11 glaucoma patients with mild to moderate visual field defects and 11 eyes of 11 normal persons. Program 24-2 of the Humphrey Field Analyzer was applied to each subject. Based on the mean sensitivity and standard deviation at each coordinate in normal persons, the Z-score was calculated in the visual fields of glaucoma patients(absolute scotomas were excluded). Results: The mean Z-score of retinal sensitivity, was less for size III than for size I in abnormal lesions, and less for size I than for size III in normal lesions(paired t-test, p<0.01). Pathological spatial summation was found more frequently in normal lesions than in abnormal lesions. Conclusions: In mild visual field defects, size I detects abnormalities with greater sensitivity than size III. Perimetry using the size I target can be effective as a supplementary diagnostic method to detect and follow the early glaucomatous visual field. (author abst.)
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