Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
[33] RCT	46 people with bilateral cataract and diabetes, 34/46 (78%) of whom had retinopathy	Postoperative inflammation (posterior synechiae) 1 year 1/46 (2%) eyes with phaco extracapsular extraction 7/46 (15%) eyes with manual large-incision extracapsular extraction	P = 0.04	Effect size not calculated	phaco extracapsular extraction
[33] RCT	46 people with bilateral cataract and diabetes, 34/46 (78%) of whom had retinopathy	Intraocular lens deposits 1 year 1/46 (2%) eyes with phaco extracapsular extraction 7/46 (15%) eyes with manual large-incision extracapsular extraction	P <0.0005	Effect size not calculated	phaco extracapsular extraction