Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Visual acuity
[28] RCT	85 people	Logarithm of minimum angle of resolution (logMAR) 1 year 0.47 with phaco extraction alone 0.53 with phaco extraction plus glaucoma surgery	Reported as not significant P value not reported		Not significant
[29] RCT	20 eyes, 18 people	Corrected visual acuity 6/12 or greater 7/10 (70%) with phaco extraction alone 8/10 (80%) with phaco extraction plus glaucoma surgery	Reported as equal improvement Significance assessment not performed
[31] RCT	70 eyes, 35 people	Mean visual acuity improvement from 20/117 before surgery to 20/28 after surgery with manual large-incision extraction plus trabeculectomy from 20/119 before surgery to 20/33 after surgery with manual large-incision extraction alone	Difference reported as not significant P value not reported		Not significant