Objective To analyze the therapy effects of treating chronic dacryocystitis with probing of lacrimal passage,the ball head silicone tube implantation and probing of lacrimal passage combined with the ball head silicone tube implantation. Methods From February 2012 to September 2013, in the People's Hospital of Liuzhou City, 112 patiens(170 eyes) with chronic dacryocystitis were retrospectively analyzed and the data of patients were collected. 58 eyes were treated with probing of lacrimal passage(group 1), 5...