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': 'Nummular keratitis is a feature of: September 2012 \nSelect and explain. \nA. Fungal keratitis, B. Herpes zoster keratits, C. Bacterial keratitis, D. Acanthamoeba keratitis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Herpes zoster keratitis', 'role': 'assistant'}]