Amniotic Membrane for Dacryocystorhinostomy

Inclusion Criteria: * Patients over 18 years old * Diagnosis of Nasolacrimal Duct Obstruction or Score ≥ 2 on the Munk Scale * Patients able to undergo general anesthesia * Patients able to keep follow-up * Patients willing to participate in the study and signed informed consent Exclusion Criteria: * Patients with ocular surface diseases that affect surgical outcomes, such as blepharitis, lacrimal punctum epithelization, kissing punctae, facial nerve palsy, allergic conjunctivitis, etc * Patients with eyelid malpositions * Patients diagnosed with systemic inflammatory diseases, such as granulomatosis with polyangiitis, sarcoidosis, etc * Previous history of facial trauma with nasal bone fractures * Pregnancy and lactation