Long-term Outcome of Nasolacrimal Duct Obstruction Treated with Nasolacrimal Polyurethane Stents (Song's Stent)

Purpose: This study was carried out to evaluate and investigate the long-term outcome of placement of 25 plastic nasolacrimal stents (Song`s stents) without fluoroscopic guidance for the treatment of obstructed nasolacrimal ducts. Methods: The medical records of 25 patients who had had Song`s polyurethane stents placed between 1997 and 2003 were reviewed. The patients included 17 women and 8 men who ranged in age from 22 to 79 years (mean, 57.9...