Fluoroscopic study of Lacrimal apparatus in Patients with Chronic Dacryocystitis

Chronic dacryocystitis is a common condition requiring accurate preoperative assessment to ensure optimal surgical outcomes following endoscopic dacryocystorhinostomy. Conventional methods such as syringing may fail to identify partial, functional, or canalicular-level obstructions, potentially leading to surgical failure. Fluoroscopic dacryocystography provides dynamic anatomical and functional assessment of the lacrimal drainage system, enabling precise localization and characterization of obstruction, as well as evaluation of lacrimal sac morphology. Despite its diagnostic utility, limited ENT-based prospective data are available, particularly in Indian tertiary care settings. This study aims to generate evidence on the diagnostic accuracy and clinical relevance of fluoroscopic DCG compared to syringing, thereby improving preoperative planning, predicting surgical outcomes, and potentially reducing failure rates in endoscopic DCR.

Adult patients (18–65 years) with clinically diagnosed chronic dacryocystitis will be included. Participants will undergo standard clinical evaluation including syringing and fluoroscopic DCG using non-ionic contrast (Iohexol). The study will compare syringing and DCG findings, identify the site and type of obstruction, assess lacrimal sac dimensions, and correlate imaging findings with postoperative outcomes following endoscopic DCR. Diagnostic validity will be assessed. The study is observational, does not alter standard treatment.