Revising a Failed Dacryocystorhinostomy

Abstract

The aim of dacryocystorhinostomy (DCR) is to establish a patent fistula between the lacrimal sac and the nasal cavity with removal of intervening bone. The main indications for DCR are clinically significant epiphora and/or infection in the presence of nasolacrimal duct obstruction (NLDO). While most NLDOs are primary and acquired, other causes of NLDO include lacrimal sac tumor and nasal and facial fractures involving the nasolacrimal canal. Associated common canalicular obstructions may also be managed along with the DCR be it external or endoscopic, with trephination and intubation.