Since January this year, the Department of Ophthalmology has implemented a series of techniques of microscopic lacrimal stent, lacrimal drainage tube implantation, and artificial nasolacrimal duct implantation for 20 patients with lacrimal diseases, which were successful and the patients were very satisfied. Tear overflow is a common symptom in ophthalmology, which is mainly caused by obstructive diseases of nasolacrimal duct, and commonly include tear duct, lacrimal duct, common tear duct, bony lacrimal stenosis, obstruction, inflammation, lacrimal sac dilatation, lacrimal duct rupture and other lacrimal diseases. Patients often have more than one tear flow and tearing, especially in the fall and winter seasons, patients are very painful and bring great inconvenience to life and work. Traditional surgical methods are operated under the naked eye, with low success rate, long hospitalization time, great pain suffered by the patient, high cost, and facial stains left behind. Microscopic tear duct stenting, lacrimal drainage tube implantation, and artificial nasolacrimal duct implantation are the most advanced treatment techniques at home and abroad for this kind of disease. The surgery is performed under microscope, without skin incision, less trauma, less pain, short hospitalization time, low cost, no scar, and high success rate of the surgery. Patients with good conditions can be operated on an outpatient basis without hospitalization. After the surgery, the tear ducts are regularly flushed according to the situation, and the tear ducts are left in place for 2 to 3 months and then pulled out, and the treatment is finished and cured. The development of this technology has brought the gospel to patients with lacrimal diseases, and filled the gap (as shown in the picture).