Number of procedures and reason for unplanned re-interventions within the ILM and control groups
| Patient number | ILM group | Control group | ||
| Number of procedures | Reason | Number of procedures | Reason | |
| 1 | 2 | 2 | ||
| 2 | 2 | 3 | Lysis of synechia | |
| 3 | 3 | RRD | 4 | RRD, SiO removal |
| 4 | 2 | 2 | ||
| 5 | 2 | 2 | ||
| 6 | 2 | 4 | RRD ×2, SiO retained | |
| 7 | 2 | 4 | RRD, SiO removal | |
| 8 | 2 | 2 | SiO retained | |
| 9 | 2 | 2 | ||
| 10 | 2 | 2 | ||
| 11 | 2 | 2 | SiO retained | |
| 12 | 2 | 3 | RRD | |
| 13 | 2 | 3 | ERM peeling | |
| 14 | 2 | |||
| 15 | 2 | |||
| 16 | 2 | |||
| 17 | 3 | RRD, SiO retained | ||
| 18 | 2 | |||
| 19 | 3 | ERM peeling | ||
| Mean | 2.08 | 2.58 | ||
| SD | 0.37 | 0.75 | ||
ERM, epi-retinal membrane; ILM, internal limiting membrane; RRD, recurrent retinal detachment; SiO, silicone oil.