Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Re-attachment rates
RCT	198 eyes with phakic (108 eyes), pseudophakic (70 eyes), or aphakic (20 eyes) rhegmatogenous retinal detachment (RRD), involving retinal breaks within 1 disc diameter of each other located in the superior retina, without severe proliferative vitreoretinopathy (PVR)	Re-attachment rates after one operation 6 months 78/95 (82%) eyes with scleral buckling 75/103 (73%) eyes with pneumatic retinopexy	Reported as not significant P value not reported		Not significant
RCT	198 eyes with phakic (108 eyes), pseudophakic (70 eyes), or aphakic (20 eyes) RRD, involving retinal breaks within 1 disc diameter of each other located in the superior retina, without severe PVR	Final re-attachment rates 93/95 (98%) eyes with scleral buckling 102/103 (99%) eyes with pneumatic retinopexy	Reported as not significant P value not reported		Not significant
RCT	20 people with RRD and single retinal break or small group of breaks in phakic or pseudophakic eyes without severe PVR	Re-attachment rate 8/10 (80%) with scleral buckling 7/10 (70%) with pneumatic retinopexy	Significance not assessed