Lesion in the optic chiasma causes -a) Bitemporal hemianopiab) Upper nasalc) Lower nasald) Upper temporale) Lower temporal

Central lesions of optic chiasma Characteristic visual field defect → Bitemporal hemianopia Initially temporal quadrantanopia may occur :- Lesion compressing from below → upper temporal Lesion compressing from above → lower temporal Lateral lesions of optic chiasma → Binasal hemianopia