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
Which of the following is not a cause for interstitial keratitis 
Select and explain. 
A. Syphillis, B. Leprosy, C. Tuberculosis, D. Pneumococcus
D: Pneumococcus
Answer: D: Pneumococcus 
Explanation: Pneumococcus Interstitial keratitis Corneal stromal inflammation without epithelial involvement. Infective causes are: *Syphillis * TB * Leprosy *Acanthamoeba