Case sharing: Ms. Zhang has been suffering from chronic dacryocystitis for more than ten years, her eyes often always have tears flowing out of her eyes, and it is very embarrassing to go out, and sometimes there is pus in her eyes, especially when she encounters a cold wind, the symptoms are more serious, although it seems to others that this is just a small problem that does not kill her, but it is a small problem that makes Ms. Zhang unbearable, and it is really a pain who knows. Ms. Zhang has been to the hospital ophthalmology many times, but after countless times of tear duct irrigation, tear duct probing treatment, there is no effect, a doctor suggested that she make an external incision of the lacrimal sac and nasal anastomosis surgery, but the beauty of Ms. Zhang and do not want to have scars on the face, so there has been no good solution. A chance to listen to a professor of ophthalmology, she did a nasal lacrimal sac anastomosis surgery, the operation is through a thin nasal endoscope operated in the nasal cavity, the blockage of the tear duct drainage into the nasal cavity, after the operation troubled Zhang more than ten years of tearing eyes, pus, symptoms disappeared, Ms. Zhang is particularly happy. Lacrimal duct obstruction and chronic dacryocystitis is a very common ophthalmologic disease in clinic, mainly caused by nasolacrimal duct obstruction, and patients suffer from long-term pus overflow and tear overflow, which is very painful and seriously affects the quality of life of patients. Ophthalmologists will often give the patient tear duct flushing, tear duct probing and other methods of treatment, most of the patients through these relatively simple methods of treatment can solve the problem, but some patients through the treatment does not have the effect on the ineffective patients doctors will recommend the use of tear duct laser surgery, tear duct placement and other methods of treatment, but the success rate is not high, and the external approach of the lacrimal sac nasolacrimal anastomosis surgery is easy to leave the face scar after surgery, Fibrosis of the anastomosis and other shortcomings, many patients are difficult to accept. With the continuous development of nasal endoscopic technology, nasal endoscopic lacrimal sac rhinostomy surgery for the treatment of chronic dacryocystitis has gradually matured, the surgery has many advantages: clear vision in endoscopic operation, no external incision, certain efficacy, high success rate, small injury, few complications, if the patient has sinusitis, nasal septum deviation and other nasal diseases can also be dealt with at the same time, by more and more otolaryngology and ophthalmology doctors recommended, and gradually become the treatment of the lacrimal canaliculus. It is recommended by more and more otolaryngologists and ophthalmologists, and has gradually become one of the mainstream surgeries for treating lacrimal diseases, and is also highly praised by the majority of patients. However, it should be noted that this type of surgery is suitable for patients with nasolacrimal duct obstruction, and if the patients’ tear duct obstruction is in the lacrimal punctum, lacrimal duct and lacrimal duct, this type of surgery is not so suitable.