The authors share their experience in treating 50 cases of stenosis or obstruction of the nasolacrimal outflow system. The main advantages of the internal dacryocystorhinostomy performed in operating microscope with intubation of lacrimal canaliculi are: minimally invasive, en excellent cosmetic effect, lack of cicatrix, saving of muscular elements responsible for the function of the lacrimal pump, possibility of surgical procedure in spite of an inflammatory process. The authors express the view, that the optimal solution for the treatment of the cases of lacrimal duct stenosis is the ophtalmologist-otorhinolaryngological team procedure while the whole diagnostic and healing process.