Patient characteristics in this study
| Characteristics | Group A (n=24) | Group B (n=20) | P value |
| Age (years), mean±SD | 57.9±15.5 | 61.5±10.5 | 0.582 |
| Sex, female/male | 54.2% | 25.0% | 0.213 |
| Disease leading to the vitrectomy | 0.302 | ||
| RRD | 14 | 16 | |
| PDR | 8 | 3 | |
| Others* | 2 | 1 |
*Others include macular hole (group A), epiretinal membrane (group A) and branched retinal vein occlusion (group B).
PDR, proliferative diabetic retinopathy; RRD, rhegmatogenous retinal detachment.