The early psychophysical disturbances in chronic open-angle glaucoma. A study of visual functions with asymmetric disc cupping

M. Motolko, S. M. Drance and G. R. Douglas

Fourteen patients with elevated intraocular pressures, normal visual fields, and asymmetry of disc cupping were examined using a number of psychophysical tests. The results suggest that color vision and visually evoked potentials show early disturbances, but a contraction of the visual field is variable.