RESUMO
Objective To investigate the effects of preset medial canthus ligament relaxation sutures in traumatic inferior canalicular laceration anastomosis.Methods A retrospective study was conducted in 32 patients (32 eyes) with inferior lacrimal canaliculus laceration who admitted to the Department of Ophthalmology from September 2014 to September 2016.In the procedures,after the broken end of the lower lacrimal canaliculus was found,4-0 suture was immediately placed between the ends of medial canthus ligament.After ensuring the satisfaction of the broken ends of the duct,the preset suture was released and the lacrimal stents were implanted.Anastomosis of lacrimal canaliculus laceration was performed with 8-0 absorbable suture,and subcutaneous tissue and skin were sutured with 6-0 absorbable suture.Then the lacrimal stents were removed 2-3 months after the operation.The patients were followed up 6-12 months for analysis of success rate and complications.Results Totally 29 patients were cured,2 patients improved,and 1 patient did not get better,with cure rate of 90.62％ and the effective rate of 96.88％.After surgery,lacrimal point tear presented in 2 eyes (6.25％),and notch within medial canthus was found in 1 eye (3.12％).Conclusion Medial canthus ligament relaxation suture can create a low tension healing environment for lacrimal canalicular laceration and improve the cure rate of canalicular laceration anastomosis.