Functioning conjunctivodacryocystorhinostomy fistula following Pyrex tube extrusion: report of two cases

Conjunctivodacryocystorhinostomy (CDCR) with Jones tube placement is a standard treatment for symptomatic canalicular obstruction but often complicated by tube extrusion. We report two rare cases where patients maintained a patent, functional ostium following Jones tube loss or removal. Both patients had a history of multiple lacrimal surgeries. After tube extrusion or removal, endoscopic assessments and follow-up confirmed continued tear drainage without recurrent epiphora. These cases demonstrate that, under certain conditions, CDCR tracts can remain stable and functional without stenting.