1, is not the flow of tears is the tear duct obstruction? Flowing tears is one of the main symptoms of lacrimal disease, and there are two reasons for this: one is the obstruction of discharge, tears can not flow into the nasal cavity and overflow outside the eyelid, called tear overflow; the second is the increase of tear secretion, the discharge system is too late to drain away and out of the eyelid, called flowing tears (caused by inflammation of the eye surface, foreign bodies, etc.). 2.What is lacrimal obstructive disease? What are the clinical manifestations? What are the dangers? Lacrimal obstructive disease is caused by various causes of tear drainage system diseases that cause tear overflow or pus. Deng Zongyong, Ophthalmology Department, Liangping County People’s Hospital Tear overflow is mostly related to functional or organic tear duct obstruction, and the symptoms are aggravated in windy or cold climate. The main cause of functional tear overflow is the relaxation of the orbicularis oculi muscle, the weakening or disappearance of the tear pump, and the obstruction of tear drainage, resulting in tear overflow. Tear overflow caused by blockage or narrowing of the tear duct is organic tear overflow. It can cause discomfort and cosmetic defects. Chronic tear maceration can cause chronic irritant conjunctivitis, eczematous dermatitis of the lower lids and cheeks. Patients constantly wipe their tears, and the long-term effect can lead to lower lid ectropion, thus aggravating the symptoms of lacrimal overflow and causing great physical and psychological pain to the patient. At the same time chronic lacrimal sac infection as a latent infection foci, is the main cause of corneal ulcers and endophthalmitis after internal eye surgery. 3.How is tear duct obstruction caused? Abnormal tear ducts, including narrowing, occlusion or absence of tear ducts. Obstruction or narrowing of the lacrimal duct to the nasolacrimal duct, including congenital atresia, inflammation, tumor, stone, trauma, foreign body, drug toxicity and other factors causing structural or functional insufficiency of the lacrimal duct, resulting in the inability to drain tears. 4.How to detect lacrimal obstructive disease at an early stage? In the absence of any external factors to stimulate the situation, the eyes contain tears or overflow, cold air stimulation aggravated, should promptly seek medical advice. 5.Does medication for lacrimal obstructive disease work? Because of the narrow diameter of the lacrimal duct, it is difficult for the medication to reach the lesion after the obstruction, so the medication is not effective. Surgery is the main treatment. 6.What are the methods of surgical treatment for lacrimal duct obstructive disease? Depending on the site of obstruction, the surgical method is chosen differently. In the past, nasolacrimal duct obstruction was preferred to nasal lacrimal sac anastomosis, which destroyed the natural anatomical structure of lacrimal sac and nasal cavity, caused more trauma and left incision scar on the face, and was replaced by artificial lacrimal duct implantation. Since 2008, the stent technology of interventional treatment has been applied to the treatment of nasolacrimal duct obstruction abroad, and after the continuous improvement of the stent and its surgical operation method, the artificial nasolacrimal duct implantation has been successful in the treatment of nasolacrimal duct obstruction. The artificial nasolacrimal duct implantation technology has achieved good clinical results and become a recognized development trend. 7.What are the advantages of artificial lacrimal duct implantation? The operation is simple, safe and time-saving, patients do not need to be hospitalized; less bleeding, less pain, short operation time, generally about 10 minutes, patients can tolerate; do not change the original anatomical position, preserving the physiological anatomy of the lacrimal system, after the operation, if the blockage again, can be re-intervention or change to other methods; do not make skin incision, after the operation, the face does not leave an ectopic scar, does not affect the appearance and normal life; 8, artificial How is the treatment effect of lacrimal duct implantation? Treatment of lacrimal duct, common lacrimal duct obstruction, nasolacrimal duct obstruction, chronic dacryocystitis cure rate of 82.1%, the efficiency rate of 94.8% 9, artificial lacrimal duct implantation should pay attention to what after surgery? Be careful not to blow your nose and puff hard. Observe the follow-up time, order medication on time, and perform tear duct flushing regularly.