لوله گذاري دو مجرايي با لوله كرافورد در انسداد مادرزادي مجراي اشكي

Outcomes of Bicanalicular Silicone Intubation for Congenital Nasolacrimal Duct Obstruction

Purpose: To evaluate the success rate of bicanalicular silicone tube intubation in children with congenital nasolacrimal duct obstruction (CNLDO). Methods: Hospital records of 71 cases of bicanalicular silicone intubation in 62 children with CNLDO were reviewed. Success was defined as resolution of symptoms and signs such as epiphora and discharge 6 months after removal of the silicone tube. Results: Mean age was 3.64±1.8 (range 1.4-9.5) years. Mean duration of intubation was 6.0±4.8 (range 1-30) months. The overall success rate was 85.9% including 87.5% for primary and 84.2% for secondary procedures. There was no significant change in success rate of primary (P~ 0.09) or secondary (P~ 0.13) procedures with increasing age. Intubation duration greater than 6 months was not associated with increasing success rate (P~0.51). Pre-planned removal of tubes «3 months) because of dislodgement occurred in 4 eyes (5.6%) but had no significant effect on success rate (p~0.09). Conclusion: Bicanalicular silicone intubation is an effective treatment for children with CNLDO at any age. Duration of intubation greater than 6 months does not improve the success rate. Pre-planned removal of the tube «3 months) because of dislodgement is the most common complication but does not seem to increase the risk of failure