CONGRUOUS QUADRANTANOPIA AND OPTIC RADIATION LESION

Homonymous visual field defects are rare in patients with MS and are u sually caused by large lesions in the white matter of the posterior op tic radiations and visual cortex. The postulate of Holmes and others, early this century, that optic radiation lesions could produce quadran tic defects has recently been questioned. We report the full recovery of a patient with probable MS who presented with congruous quadrantano pia from a small white matter lesion in the contralateral trigone area .