Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Re-attachment rate
RCT	157 people with grade C anterior or posterior proliferative vitreoretinopathy (PVR)	Proportion of people with successful surgery 6 months 39/70 (56%) with fluorouracil plus heparin 40/78 (51%) with placebo	P = 0.589		Not significant
RCT	157 people with grade C anterior or posterior PVR	Overall complete retinal re-attachment rate with or without re-operation 6 months 56/67 (83.5%) with fluorouracil plus heparin 65/77 (84.4%) with placebo	Reported as not significant P value not reported		Not significant