Localised ocular surface squamous neoplasia—disease type, involvement of surgical margins, and rate of recurrence
| Primary disease | Recurrent disease | |
| No of cases | 55 | 10 |
| CIN grade I | 8 (14.5%) | 2 (20.0%) |
| CIN grade II | 14 (25.5%) | 1 (10.0%) |
| CIN grade III | 33 (60.0%) | 7 (70.0%) |
| Incomplete surgical margins | 16 (29.1%) | 6 (60.0%) |
| Recurrence | 1 (1.8%) | 0 (0%) |
CIN, conjunctival or corneal intraepithelial neoplasia.