抄録
Nasolacrimal duct obstruction used to be treated with extranasal dacryocystorhinostomy before, but nasal endoscopic dacryocystorhinostomy has recently become more common due to the development of nasal endoscopy. We report a 41-year-old man of nasolacrimal duct obstruction secondary to sarcoidosis. Epiphora in both eyes developed and endoscopic-dacryocystorhinostomy was performed to both sides. His nasal cavity was deformed and the mucous membrane was hypertrophic. We used the navigation system and 25G light guide to establish orientation. A 2.5mm diamond bur was used for dacryocystorhinostomy. A Nunchaku-type silicon tube was inserted successfully in the left side, but was inserted only half way in the right side. The left and right tubes were removed a month and 3 months after surgery. The symptom of the left eye disappeared after one and a half year but the symptom of the right eye remained.
