Fig. 1
From: Endoscopic dacryocystorhinostomy with an otologic T-type ventilation tube in repeated revision cases
Surgical techniques. a Silicone tube needles inserted through the inferior and the superior puncta grasped in the nasal cavity (right). b Insertion of the T-type ventilation tube (black arrow) using micro-alligator forceps. T-type ventilation tube was set out of the silicone tube. c A gun-shaped clamp was used to make the T-type tube gradually sliding towards the sac. d The ostium status in referral visit after removing T-tube