| Timing | Munk grading for epiphora | Fluorescein disappearance test | ||||||
| Gr 4 N (%) | Gr3 N (%) | Gr2 N (%) | Gr1 N (%) | Gr0 N (%) | Gr1 N (%) | Gr2 N (%) | Gr3 N (%) | |
| Pre | 47 (100) | -- | -- | -- | -- | -- | -- | 47 (100) |
| 1 m | 6 (13) | 32 (68) | 9 (19) | -- | -- | -- | 36 (77) | 11 (23) |
| 2 m | -- | 6 (13) | 8 (17) | 22 (47) | 11 (23) | 32 (68) | 8 (17) | 7 (15) |
| 3 m | -- | -- | -- | 35 (74) | 12 (26) | 33 (70) | 14 (30) | -- |