Background To evaluate the effectiveness of probing and nasolacrimal duct intubation in patients with congenital nasolacrimal duct obstruction (CNLDO). Materials and Methods CNLDO data collected between June 1, 2014, and June 1, 2023, were retrospectively reviewed. canalicular Crawford intubation was performed in all patients after two failed probing procedures. RESULTS A total of 121 eyes of 93 patients (45 male and 48 female) were included in the study. The first probing procedure was successful in 94 (80.3%) eyes and the second probing procedure in 15 (75%). Among the four eyes in the silicone intubation group, the first procedure was successful in two (50%) and partially successful in the remaining two (50%). Silicone intubation was successful in all five eyes (100%) for which the second probing failed. CONCLUSION Nasolacrimal duct intubation with silicone tubes appears to be a less invasive and successful treatment option for CNLDO after failed probing.