AIM: To investigate the surgical methods and clinical effects for chronicdacryocystitis with obstruction to lacrimal canaliculi.

METHODS: Totally 46 cases(48 eyes)who suffered from chronicdacryocystitis with obstruction to lacrimal canaliculi underwent an operation to implant improved dacrocystorhinostomy combined with the silicone tube after diagnosis. All of them had a history of the tears purulent secretions. And indurations appeared on the lacrimal sac area which was swelling and even the skin ulcerated. After operation, the patients flushed lacrimal duct regularly and they were followed up 3 years in order to observe the surgical results.

RESULTS:Totally 46 eyes(96%)had no tears, purulent discharge, and the lacrimal sac district redness disappeared, irrigation of lacrimal passage was passable. 2 cases(4%)still had tears, with no purulent discharge, the lacrimal sac district redness disappearing. The lacrimal passages were unobstructed and the effective rate was 100%.

CONCLUSION: Improved dacrocystorhinostomy combined implantation with silicone tube, which helps to solve the problem of obstruction of nasolacrimal duct and lacrimal canaliculi only by one time, to alleviate patients'suffering of the reoperation and to ease their financial burden, is an effective method for chronic dacryocystitis with obstruction of lacrimal canaliculi.