Mihailovic N, Blumberg AF, Rosenberger F, et al. - Since dacryocystorhinostomy (DCR) remains the gold standard therapy for nasolacrimal duct obstruction (NLDO), but is invasive and does not maintain the physiology of the lacrimal pathway, researchers presented this modern technique of lacrimal duct surgery and assessed its long-term success rate in a large study population. They retrospectively reviewed the medical records of 1,010 patients with acquired NLDO. The sample consisted of adult patients who had undergone transcanalicular microdrill dacryoplasty (MDP). Seven hundred ninety-three eyes of 576 patients after transcanalicular MDP could be involved in the study. The mean follow-up time was 8.7 ± 0.9 years and the initial surgical success rate was 84.0%. This is the first investigation demonstrating the success rate of microendoscopic lacrimal duct surgery following such a long follow-up period and in such a large study population. Transcanalicular MDP is a minimally invasive technique with a relatively low complication rate and can be used as an alternative procedure before more invasive lacrimal duct surgery like DCR is carried out.