AIM:To observe the clinical effect of retrograde lacrimal duct drainage tube(RS-1 type)in the treatment of lacrimal canaliculus rupture in children.

METHODS: The clinical data of 37 cases(37 eyes)with lacrimal canaliculus rupture admitted to Handan Eye Hospital and Handan Central Hospital from March 2016 to November 2019 were retrospectively analyzed. New silicone tubes were retrograde implanted in all patients during the operation. 8-0 absorbable sutures were used to anastomose the broken end of the lacrimal canaliculus, 6-0 absorbable sutures were used to anastomose the “medial canthus ligament-orbicularis” complex intermittently, and muscle, subcutaneous tissue, skin wounds and conjunctival wounds were sutured intermittently. The catheter was extubated 2-3mo after operation, and the lacrimal passage patency and lacrimal ectorrhea were observed for 6-12mo.

RESULTS: Totally 31 eyes(84%)were cured, 5 eyes(14%)were improved, and 1 eyes(3%)was ineffective. The total effective rate reached 97%. None of the patients had lacrimal dot tearing, abnormal location of lacrimal dot, angulation deformity and other related complications, and 1 invalid eyes(3%)was combined with bone lacrimal tubule fracture, without obvious lacrimal ectorsion symptoms.

CONCLUSION: The new type of silicone tube combined with retrograde catheterization has the characteristics of simple operation, light postoperative stimulation, safe catheterization state and significant anastomosis effect. The retrograde catheterization can better protect the small lacrimal spots.