What should I do if the lacrimal passage is blocked? Dacryocystostomy conquers difficult problems under endoscope.

Obstructive diseases of lacrimal duct mainly occur in lacrimal punctum, canaliculus, common lacrimal duct and nasolacrimal duct. The main causes of lacrimal duct obstruction are lacrimal scar, foreign body, polyp, lacrimal scar tissue hyperplasia, lacrimal duct and lacrimal sac stones, inflammation and traumatic scar tissue caused by congenital lacrimal punctum atresia, thermal burn and chemical burn. For the treatment of lacrimal duct obstruction, doctors in Chengdu Aier Eye Hospital said that it varies from person to person. Cases with incomplete obstruction of nasolacrimal duct shortly after illness can be treated with drugs; If the nasolacrimal duct is only partially narrow, lacrimal duct probing or nasolacrimal duct intubation can be tried; If the lacrimal punctum and canaliculus are normal, dacryocystorhinostomy can be performed; If the lacrimal sac is too narrow, or the patient is old and weak, or there is serious scar after injury, dacryocystectomy is feasible. Traditional surgical methods are not beautiful, and dacryocystostomy overcame the technical problems under nasal endoscope. Doctors in Chengdu Aier Eye Hospital said that the traditional surgical method is to relieve symptoms through nasal dacryocystorhinostomy, but because facial scars often leave after external nasal approach, which affects the appearance, patients are reluctant to undergo surgery, especially young patients. With the development of minimally invasive surgery, dacryocystostomy under nasal endoscope has been used more and more in clinic: 1. The inner side wall of lacrimal sac is separated from the middle nasal meatus only by a thin bone, which saves labor and time. It is unnecessary to cut the skin to treat chronic dacryocystitis by dacryocystostomy through nasal endoscope, which simplifies the operation steps, relieves the pain of patients and does not affect the appearance. Therefore, 2. The operation under nasal endoscope does not cut off muscles and medial ligaments, which is harmful to tears. There is no need to separate periosteum from lacrimal sac, which avoids the surgical difficulties caused by adhesion and scar after the last operation. Placement of silicone expansion tube after stoma can maintain mucosal stoma, and fixing mucosal flap is beneficial to wound healing. 3. The etiology of chronic dacryocystitis is mostly secondary to nasolacrimal duct stenosis, and another factor comes from the pathological changes of nasal cavity, less from the inflammatory stimulation of conjunctival sac. Endoscopic surgery can deal with the causes of obstruction of nasolacrimal duct caused by nasal cavity, so that the operation of nasolacrimal duct can be completed at one time and satisfactory results can be achieved. Chengdu Aier Eye Hospital is a modern eye specialist hospital under Aier Eye Hospital Group, the largest eye hospital in southwest China. It is one of the earliest professional eye hospitals established in Chengdu, and it is a designated medical insurance unit at the provincial, municipal and district levels.