Cox proportional hazards model for surgical failure (POAG and XFG). Reference is pseudophacic lens state at time of surgery. Combined surgery (Trabectome + Cataract) significantly lowers the risk for surgical failure in comparison to pseudophakic patients. There is a trend towards increasing age being beneficial for a successful surgical outcome. HR – Hazard Ratio, CI – Confidence Interval, phakic – phakic at time of Trabectome surgery, combined – Trabectome + phaco, age – age at time of surgery. Statistical significance was assumed for p < 0.05