Safety and efficacy of combined trabeculectomy for primary angle closure glaucoma with persistent ocular hypertension

Purpose:To investigate the safety and efficacy of combined trabeculectomy for primary acute angle closure glaucoma with persistent ocular hypertension.Methods:A total of 36 patients (40 eyes) with primary acute angle closure glaucoma,who were treated with combined trabeculectomy in the Ophthalmology Unit of our hospital,were selected.Before the procedure,patients were assigned to ocular hypertension group( ≥ 40 mm Hg) or control group(＜ 40 mm Hg) based on intraocular pressure.These two groups were followed up for one year,and compared for post-operative visual acuity,intraocular pressure, filtering bleb,anterior chamber depth, and the occurrence of complications.Results:At 1 week,6 months,and 12 months after the procedure,intraocular pressure was controlled in both the ocular hypertension group and the control group,without significant differences between the two groups (P＞0.05).At 1 week,6 months,and 12 months after the procedure,all of the patients,in both groups,had improved in terms of visual acuity,with a significant difference before and after the procedure for the ocular hypertension group (P＜0.05).After follow-up at 12 months,the two groups presented no statistically significant differences in anterior chamber depth,filtering bleb survival,or the incidence of post-operative complications (P＞0.05 for all).Conclusion:It is feasible,safe,and effective to perform combined trabeculectomy on patients with primary acute angle closure glaucoma complicated by persistent ocular hypertension.