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To establish the necessity of silicone tube intubation in acute dacryocystitis (AD) patients undergoing endonasal endoscopic dacryocystorhinostomy (En-DCR). Patients presenting with unilateral AD were randomly assigned to two treatment groups. En-DCR procedures were performed following lacrimal abscess formation, with the operation being performed with silicone intubation for patients in group B but not group A. Functional success was defined by an absence of additional AD episodes, no epiphora, and ostium patency as established via endosco