Low Temperature Plasma Ablation Combined Lacrimal Duct Catheterization in the Treatment of Lacrimal Duct Obstructive

Inclusion Criteria: * ① sign the informed consent for this study Voluntarily * ≥18 years old and \< 70 years old (3) Single lacrimal tract obstruction was included in the study * no purulent secretion of lacrimal passage Exclusion Criteria: * Patients who meet any of the following criteria will not be eligible for inclusion in this study: * Have a history of lacrimal duct surgery, including lacrimal duct catheterization, laser lacrimal duct plasty, etc * Have a history of allergy to hormones and antibiotics * congenital lacrimal duct malformation * nasal trauma and deformation ⑤ Patients with severe abnormal liver and kidney function and cardiovascular and cerebrovascular diseases In addition to lacrimal duct obstruction, there are other ophthalmic diseases ⑦ Exclude diabetes * Exclusion of pregnancy, lactation women ⑨ Not willing to participate in research