This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adverse Drug Effect, Subject name: Pharmacology
Which does NOT cause optic neuropathy 
Select and explain. 
A. Penicillin, B. INH, C. Ethambutol, D. Chloramphenicol
A: Penicillin
Answer: A: Penicillin 
Explanation: Ans. is 'a' i.e., Penicillin Drugs causing optic neuritis:Aminosalicylic acid - StreptomycinAmiodarone - PhenothiazinesChloramphenicol - PhenylbutazoneEthambutol - QuinineIsoniazid - Penicillamine