This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
[{'content': 'Best way to prevent infection after cataract surgery is \nSelect and explain. \nA. Antibiotics, B. Eye brow shaving, C. Through irrigation, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Topical antibiotics such as tobramycin or gentamicin or ciprofloxacin QID for 3 days just before surgery is advisable as prophylaxis against endophthalmitis.Ref: Khurana; 4th edition; Pg- 184', 'role': 'assistant'}]