This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuro-ophthalmology, Subject name: Ophthalmology
[{'content': "Wernicke's hemianopic pupillary response is seen in lesions at - \nSelect and explain. \nA. Optic tract, B. Optic chiasma, C. Optic radiation, D. Lateral geniculate body", 'role': 'user'}, {'content': "Answer: A \nExplanation: Wernicke's hemianopic pupil indicates lesion of optic tract. In this ipsilateral and contralateral light reflex is absent when light is thrown on the temporal half of the retina of the affected side and nasal half of the opposite side;while it is present when light is thrown on the nasal half of the affected side and temporal half of the opposite side. Reference : comprehensive textbool of ophthalmology by AK Khurana", 'role': 'assistant'}]