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': 'Headache with bitemporal hemianopia with 6/6 vision is seen in \nSelect and explain. \nA. Optic neuritis, B. Trauma, C. Chiasmal lesion, D. Bilateral cavernous lesion', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. (c) Chiasmal lesionRef: Parson's, 22/e, p. 507-509May be seen in chaismal lesions caused by 3rd ventricular glioma leading to raised ICP.", 'role': 'assistant'}]