<prompt> Homonymous hemianopsia is associated with lesion atVisual cortexOptic radiationOptic tractOptic chiasma  <response>: C Optic tract It is difficult to localize a postchiasmal lesion accurately, because injury anywhere in the optic tract, lateral geniculate body, optic radiations, or visual cortex can produce a homonymous hemianopia, i.e., a temporal hemifield defect in the contralateral eye and a matching nasal hemifield defect in the ipsilateral eye 