This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lesions of the Visual Pathway, Subject name: Ophthalmology
[{'content': 'Lesion of optic tract causes? \nSelect and explain. \nA. Binasal hemianopia, B. Bitemporal hemianopia, C. Homonymous superior quadrantonopia, D. Homonymous hemianopia', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. (d) Homonymous hemianopiaRef.: Harrison's 19th ed. /198-199* Unilateral optic nerve lesion: Unilateral blindness* Binasal hemianopia: Bitemporal optic chiasma lesion. Two different lesions compressing the chiasma from the lateral parts.* Bitemporal hemianopia: Binasal retinal damaged optic chiasmal lesion. Commonest lesion is pituitary adenoma.* Homonymous hemianopia: lesion at optic tract AND optic radiation* Homonymous superior quadrantonopia: All superior quadrantonopia goes to the temporal lobe (pie in the sky).* Homonymous inferior quadrantonopia: All inferior quadrantonopia goes to the parietal lobe (Pie on the floor).* Homonymous hemianopia w/ macular sparing: Lesion in occipital cortex les", 'role': 'assistant'}]