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
Surgery of choice for chronic acquired dacryocystitis 
Select and explain. 
A. Dacryocystorhinostomy, B. Dacryocystectomy, C. Conjunctivo-cystorhinostomy, D. None
A: Dacryocystorhinostomy
Answer: A: Dacryocystorhinostomy 
Explanation: Ans. is 'a' i.e., Dacryocystorhinostomy Treatment of chronic dacryocystitis Congenital Adult (acquired) Massage over lacrimal sac with antibiotic eye drops Conservative :- Massage, antibiotic drops, probing, Syringing (irrigation) with normal saline & syringing antibiotic solution Dacryocystorhinostomy (DCR) :- Surgery of hoice Probing of nasolacrimal duct Dactyocystectomy (DCT) Intubation with silicone tube Conjunctivocystorhinostom Dacryocystorhinostomy (DCR)