Dacryocystorhinostomy an endonasal approach is a surgical procedure which permits removal of symptoms related to chronic stenosis of the naso-lacrimal duct without leaving external scars and without presenting risk for the orbital structures. The Author describes the surgical technique employed in 12 surgical cases. Use of the frontal loupe and of the operating microscope allows the surgeon's hands to remain free while all the advantages of binocular vision are maintained. Pre-operative investigation must always include a dacryocystography, a CT of the paranasal sinuses and an endoscopic examination of the nasal cavities.