Table 1. Clinical and surgical features of both groups.
| Vitrectomy+encirclement band+gas | Vitrectomy alone and gas | P value | |
| Number of patients | 86 | 75 | – |
| Success rate | 86.0% | 80.0% | 0.3 |
| Age (mean) (SD) | 61.5 (10.9) | 67.0 (10.3) | 0.001 |
| Gender (male) | 60.7% | 68.1% | 0.7 |
| Lens status (phakic) | 68.6% | 24.0% | <0.0001 |
| Vitreous status (full PVD) | 83.7% | 90.7% | 0.19 |
| Macula status (on) | 46.5% | 45.3% | 0.88 |
| PVR at presentation | 0% | 0% | – |
| Number of retinal tears (SD) | 3.1 (1.7) | 3.5 (1.9) | 0.19 |
| Extension of RD (SD) | 3.9 (1.9) | 4.5 (1.7) | 0.28 |
| Type of gas | C3F8 4.8%SF6 95.2% | C3F8 15.5%SF6 84.5% | 0.03 |
| Cause of failure (PVR) | PVR 66.7%New hole 33.3% | PVR 93.4%New hole 6.6% | 0.08 |
| logMAR Initial BCVA (SD) | 0.91 (0.9) | 1.06 (0.9) | 0.38 |
| Final BCVA (logMAR) | 0.61 (0.7) | 0.62 (0.7) | 0.91 |
| Follow-up (mean) (SD) | 29.8 (45.9) | 28.5 (34.6) | 0.88 |
BCVAbest-corrected visual acuityPVDposterior vitreous detachmentPVRproliferative vitreoretinopathy