During an endoscopic DCR, the sinus surgeon bypass the tear duct by creating a new opening directly from the lacrimal sac to your nasal cavity. Going through the nasal passage under endoscopic vision, the sinus surgeon creates an opening in the bone that overlies the lacrimal sac. A connection is then created between the lacrimal sac and your nasal cavity. The ophthalmic plastic surgeon usually places a small tube there to help keep the new tear duct open.
