This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
[{'content': 'Attitudinal field defect is seen in: March 2012, September 2012 \nSelect and explain. \nA. Optic nerve lesion, B. Optic neuritis, C. Lesions of occipital lobe, D. Anterior ischemic optic neuropathy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans: D i.e. Anterior ischemic optic neuropathy Visual field defects Optic nerve lesion will result in ipsilateral blindness Field defects in optic neuritis may be relative or absolute for colours. There is usually some peripheral loss of the visual field Lesions of occipital lobe results in homonymous hemianopia usually with macular sparing Generally an inferior attitudinal field defect is seen if the superior half of the disc is more often affected in AION', 'role': 'assistant'}]