This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy, Development and clinical examination, Subject name: Ophthalmology
[{'content': 'Macular sparing is seen in a lesion of \nSelect and explain. \nA. Optic nerve, B. Optic chiasma, C. Occipital lobe, D. Parietal lobe', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Retention of macular function in spite of losses in the adjacent visual field. Example: In homonymous hemianopia due to an occipital lobe lesion (e.g. an interference in the blood flow in the middle cerebral aery). Reason: Macula has a dual blood supply of both MCA and PCA Visual Field Defects - Left Hemianopia with Macular Sparing. Left hemianopia with macular sparing is a paial loss of vision in the same half of both eyes with the center, the macula, spared. A lesion of both the dorsal radiation and Meyer&;s loop in the occipital lobe causes this blindness Reference: khurana 6th edition pg 677', 'role': 'assistant'}]