Fig. 36 Dacryocystorhinostomy (DCR) technique. A. A vertical incision, 15 mm long, is made 10 to 11 mm medial to the canthal angle. B. Periosteum is incised and reflected laterally from the bone with a periosteal elevator. C. The lacrimal fossa is exposed; the lacrimal sac lies behind the periosteum, which is reflected laterally.