Figure 4
From: Recovery of visual fields in brain-lesioned patients by reaction perimetry treatment
Increase of visual fields due to treatment. Visual fields of a 62 years old patient (#15) before and after treatment. upper: before treatment. lower: after treatment. left: left eye. right: right eye. The defective right visual hemifield and a central part of the left hemifield are shown. Hemianopia was caused by a bilateral lesion of the posterior cerebral artery 21 months before the onset of treatment. 86 treatment sessions within two months increased the detection rate in the right hemifield by 25%.