Lee SM, et al. - Researchers performed a retrospective chart review to examine the lacrimal drainage system (LDS) from the punctum to the inferior meatus and the clinical outcomes of transcanalicular endoscopic dacryoplasty and silicone intubation through dacryoendoscopy in individuals with primary acquired nasolacrimal duct obstruction (PANDO). They analyzed 203 cases from 156 patients who had dacryoendoscopy and sheath-guided silicone intubation for PANDO from December 2014 to March 2018. The sample consisted of 44 males and 119 females (mean age, 60.4 ± 13.6 years). Dacryoendoscopic findings were informative on clinical factors leading to LDS in patients with PANDO. The common findings of functional lacrimal duct obstruction were mucus and stones in the lacrimal sac. Membranous obstruction and stenosis under direct visualization could be managed by recanalization. In selected cases of PANDO, transcanalicular endoscopic dacryoplasty and silicone intubation are considered to be a safe and successful treatment, thereby saving the patient from bony destruction.