·AIM:To assess the outcome of trabeculectomy combined with small incision extracapsular cataract extraction and intraocular lens(IOL)implantation for the treatment of primary open angle glaucoma coexisting with cataract.·METHODS:A retrospective analysis of postoperative intraocular pressure(IOP)in 32 patients 56 eyes with primary open angle glaucoma between January 2004 and June 2010 were undertook.All patients had undergone simultaneous trabeculectomy,cataract extraction and posterior chamber IOL implantation.According to the age,the amount of glaucoma damage,and the target pressure,mitomycin C(MMC)was applied in 29 eyes,however 27 eyes were not applied.The mean follow-up duration was 14.2±6.7 months.·RESULTS:The mean IOP was reduced from preoperatively(39.2±10.6)mmHg to postoperatively(13.2±5.5)mmHg in the MMC group,the mean IOP was reduced from preoperatively(30.1±9.2)mmHg to postoperatively(17.5±8.1)mmHg in the cataract extraction and trabeculectomy alone group.Most subjects(88%)were able to discontinue all glaucoma medications.The best-corrected visual acuity was improved in 47 of 56 eyes(84%).·CONCLUSION:Trabeculectomy combined with small incision extracapsular cataract extraction and IOL implantation are effective as an initial surgical treatment for open angle glaucoma in glaucoma patients coexisting with cataract.·