This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of Cornea, Subject name: Ophthalmology
[{'content': 'Which of the following is not a cause for interstitial keratitis \nSelect and explain. \nA. Syphillis, B. Leprosy, C. Tuberculosis, D. Pneumococcus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pneumococcus Interstitial keratitis Corneal stromal inflammation without epithelial involvement. Infective causes are: *Syphillis * TB * Leprosy *Acanthamoeba', 'role': 'assistant'}]