Wu S, et al. – The frequency of appearance of complications, anatomical success and functional success after conventional endoscopic dacryocystorhinostomies (EN–DCRs) or EN–DCR with otologic T–Type ventilation tube combined with silicone tube intubation in repeated revision cases are compared in this study. The outcome of this study shows that the revision endoscopic DCR has a high rate of failure. The utilization of a T–type ventilation tube can significantly improve the success rate of surgery.