This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Glaucoma, Subject name: Ophthalmology
[{'content': 'Arcuate field defect akin to glaucoma is seen in- \nSelect and explain. \nA. Pituitary tumor, B. Occipital lobe infarct, C. Optic nerve lesion, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Arcuate field defect akin to glaucoma seen in conditions which cause optic nerve compressions', 'role': 'assistant'}]