[Contrast sensitivity in open-angle glaucoma].

The contrast sensitivity function (CSF) was determined with vertical stationary sinusoidal gratings of 6 spatial frequencies of 0.5, 1, 3, 6, 11.4 and 22.8 cycles/degree in 31 patients (50 eyes) with open-angle glaucoma. The data of CSF were compared with visual acuity and visual field determinations. It was found that CSF could be abnormal in subjects with visual acuities of 1.0 or better and normal visual fields; the patterns of CSF loss were varied, and there was a linear correlation between the area of the visual field and the CSF value. The results suggested that the measurement of CSF provided basis for the judgment of visual functional changes in the clinical observation of glaucoma.