Fig. 4From: The efficacy of XEN gel stent implantation in glaucoma: a systematic review and meta-analysisMeta-analysis of XEN-only surgery compared with phaco-XEN for bleb needing rate. The total study sample included 220 eyes undergoing XEN-only surgery and 443 eyes undergoing phaco-XEN surgery. Overall bleb needling rate was significantly high in XEN-only group (RR: 1.45, 95% CI 1.06to 1.99, p value 0.019)Back to article page