 This study found that trabeculectomy was more effective than Zengel implants in reducing intraocular pressure, IOP, over a period of 36 months. Trabeculectomies also had a higher rate of complete success, while Zengel implants had a higher rate of qualified success. Additionally, trabeculectomies had a lower incidence of postoperative complications such as flat chamber and bleb leakage. This article was authored by Danielle Zindico, Michelle Iesta, Carlo Alberto Cutillo, and others.