Frequency of the complex obstruction and its cure rate among 138 eyes with late (second year of age) and very late (3–5 years of age) initial probing for congenital nasolacrimal duct obstruction
| Age group (months) | Total number | Number of complex obstruction (%) | *Cure (%) |
|---|---|---|---|
| *Cure = complete resolution of the signs and symptoms. | |||
| 13–18 | 55 | 2 (3.6) | 1/2 (50) |
| 19–24 | 44 | 1 (2.2) | 0/1 (0) |
| 25–36 | 25 | 5 (20) | 2/5 (40) |
| 37–48 | 7 | 4 (57.1) | 1/4 (25) |
| 49–60 | 7 | 3 (42.8) | 1/3 (33.3) |