This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammations of the Cornea, Subject name: Ophthalmology
Which of the following do not penetrate cornea? 
Select and explain. 
A. Gonococci, B. Neisseria meningitis, C. Pseudomonas, D. Corynebacterium diphtheria
C: Pseudomonas
Answer: C: Pseudomonas 
Explanation: Ans. (c) PseudomonasRef: Yanoff& Ducker-ophthalmology 2nded p 04, Khurana 4,hed./ 92