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
Postcataract infection can be prevented by: 
Select and explain. 
A. Preop oral antibiotics, B. Postop oral antibiotics, C. Intraop IV antibiotics, D. Postop topical antibiotics
D: Postop topical antibiotics
Answer: D: Postop topical antibiotics 
Explanation: D i.e. Postop topical antibiotics