Cure rate of the late (second year of age) and very late (3–5 years of age) initial probing for congenital nasolacrimal duct obstruction in 138 eyes
| Age (months) | Cure* (%) | Failure (%) |
|---|---|---|
| *Cure = complete resolution of the signs and symptoms. | ||
| Group 1 (13–18) | 49/55 (89) | 6 (11) |
| Group 2 (19–24) | 39/44 (88.6) | 5 (11.3) |
| Group 3 (25–60) | 28/39 (71.7) | 11 (28.2) |