Long-term outcome of transcanalicular microdrill dacryoplasty: a minimally invasive alternative for dacryocystorhinostomy.

This is the first study to show the success rate of microendoscopic lacrimal duct surgery after such a long follow-up period and in such a large study population. Transcanalicular MDP is a minimally invasive technique with a very low complication rate and can be used as an alternative procedure before performing more invasive lacrimal duct surgery such as DCR.