Closed Dacryointubation vs Bicanalicular Intubation for Proximal Tear Duct Obstruction

Placement of the bicanalicular intubation set at each lacrimal point and fixed by means of its flaps at the level of the opening of the lacrimal sac.

Placement of dacryointubation tube through the canaliculus until it reaches the medial wall of the lacrimal sac and then passed the nasolacrimal duct until it empties out at the level of the inferior meatus.