This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Virology, Subject name: Microbiology
1% silver nitrate is used for: 
Select and explain. 
A. Ophthalmia neonatorum, B. Sympathetic ophthalmitis, C. Inclusion conjunctivitis, D. Pharyngoconjunctival fever
A: Ophthalmia neonatorum
Answer: A: Ophthalmia neonatorum 
Explanation: Ans. A. Ophthalmia neonatorum1% silver nitrate (crede's method) is used for Ophthalmia neonatorum acquired during birth caused by Neisseria gonorrhea in mother's vagina