”Beautiful eyes like a pond, autumn waves hidden through” – watery beautiful eyes is the dream of many people, but if “water” is too much, a pair of bright eyes into a teary eye, not only the beauty will But if there is too much “water”, a pair of bright eyes become teary eyes, not only the beauty will be greatly reduced, but also bring a lot of distress. In our daily life, our eyes secrete tears all the time to moisten the eyeballs, and the old tears are discharged to the nasal cavity through the tear duct located in the inner corner of the eye, because of which we usually feel a bitter taste in our mouth when we order eye drops. However, if this channel is blocked due to inflammatory stimulation and tissue growth, the tears cannot be discharged and will cause tear overflow, so the eyes are teary all day long, or worse, excess tears accumulate in the tear sac, causing infection, pus, redness, swelling and pain in the tear sac, which then leads to inflammation of the cornea and conjunctiva, etc. The consequences are endless. For the treatment of lacrimation, the method used in the past was nasal lacrimal sac anastomosis. But this method of surgery is very traumatic, long, bleeding, not only to remove about 10mm × 8mm of the nasal bone wall, but also in the root of the nose will leave a scar of at least 20mm, the patient not only have to endure a lot of pain, and the scar for the destruction of the appearance will also bring a certain degree of psychological trauma to the patient. In recent years, although laser and nasal endoscopic treatments have solved the problem of postoperative scarring, they have the fatal defects of unstable efficacy and high recurrence rate. At present. Beijing Yingzhi Eye Hospital has introduced the latest lacrimal stent implantation technology, and has achieved promising results. This minimally invasive surgery is not only less invasive, less bleeding, shorter and less painful, but also has a low recurrence rate, stable efficacy, and no skin scar after surgery. It is the safest and most effective surgical method for the treatment of lacrimal duct obstruction, chronic dacryocystitis and other causes of lacrimal ducts.