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
All of the following can cause Optic Neuritis, except : 
Select and explain. 
A. Rifampicin, B. Digoxin, C. Chloroquine, D. Ethambutol
A: Rifampicin
Answer: A: Rifampicin 
Explanation: A i.e. Rifampicin Ethambutol, streptomycin & isoniazid are anti-tubercular agents that cause optic neuritis.Q Rifampicin does not cause optic neuritis.