Fig. 5From: The efficacy of XEN gel stent implantation in glaucoma: a systematic review and meta-analysisMeta-analysis of XEN surgery compared with trabeculectomy procedure for IOP before surgery. The total study sample included 281 eyes undergoing XEN-only surgery and 332 eyes undergoing trabeculectomy procedure. Overall analysis of IOP before surgery (SMD: -0.33, 95% CI -0.49 to -0.16, p value < 0.001) was lower in trabeculectomy procedure groupBack to article page