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: Medicine
[{'content': 'Giant cell aeritis causes which of the following in the eye - \nSelect and explain. \nA. Episcleritis, B. Anterior ischemic optic neuropathy, C. Neuroparalytic keratitis, D. Band keratitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Anterior ischemic optic neuropathyCauses of vision lossAnterior ischemic optic neuropathy.Central retinal aery occulusion.Posterior ischemic optic neuropathy.Branch vetinal aery occlusionCerebral ischemia', 'role': 'assistant'}]