Cox proportional hazard analysis for hypotony as a risk factor for surgical failure (Intraocular pressure > 21 mmHg).

CI = confidence interval; HR = hazard ratio; early hypotony = hypotony occurring less than or equal to 30 days postoperatively; late hypotony = hypotony occurring later than 30 days postoperatively. *Each model was adjusted independently for age, gender, race, type of glaucoma and mean preoperative intraocular pressures. †Other complication(s) include: bleb leak, blebitis, choroidal detachment, choroidal effusion, descemet membrane detachment, hyphema, lens malposition, persistent inflammation shallow anterior chamber. Cox proportional hazard analysis for hypotony as a risk factor for surgical failure (Intraocular pressure > 21 mmHg).