This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diseases of orbit, Lids and lacrimal apparatus, Subject name: Ophthalmology
Treatment of chronic dacrocystitis - 
Select and explain. 
A. Dacrocystorhinostomy, B. Antibiotics, C. Probing, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: Conservative treatment by probing and lacrimal syringing, Dacrocystorhinostomy, Antibiotics are used. Ref : ak khurana 6th edition page no 394 REF IMG