<prompt> Lesion in the optic chiasma causes -Bitemporal hemianopiaUpper nasalLower nasalHomonymous hemianopia  <response>: Ans. is a i.e., Bitemporal hemianopia Site of lesionVisual field defectOptic nerveBlindnessOptic chiasmaBitemporal hemianopiaOptic tractIncongruent homonymous hemianopiaLateral geniculate bodyHomonymous hemianopiaOptic radiation TotalHomonymous hemianopia, sometimes with macular sparingOptic radiation lower fibres temporal lobeHomonymous upper quadrantanopiaOptic radiation upper fibres parietal lobeHomonymous lower quadrantanopiaVisual cortex anterior occipital cortexHomonymous hemianopia with macular sparingOccipital cortex tipHomonymous macular defect 