Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Re-attachment rate
RCT	131 eyes undergoing initial vitrectomy for rhegmatogenous retinal detachment (RRD) with severe proliferative vitreoretinopathy (PVR) In review	Re-attachment last follow-up examination (up to 36 months) 38/59 (64%) with silicone oil 45/62 (73%) with C3F8	P = 0.33		Not significant
RCT	134 eyes undergoing a second vitrectomy after previous failed vitrectomy surgery In review	Re-attachment last follow-up examination (up to 36 months) 37/61 (61%) with silicone oil 50/68 (74%) with C3F8	Significance not assessed