Objective To determine the clinical effects and the incidence of postoperative complications of probing lacrimal passage with different surgical methods,i. e. via upper or lower lacrimal point,or combined with local application of hormone-containing or hormone-free eye drops in the treatment of infant dacryocystitis. Methods A total of 771 cases( 1064 eyes) participated in this study. According to the age,the patients were divided into three groups: Group A included 632 patients with 7 days to 1 year old( i...