Introduction: Cataract surgery is the most commonly performed surgical procedure in the world today. Glaucoma is one of many risk factors for the development of complications in cataract surgery. The aim of this study was to investigate the incidence of complications of cataract surgery in glaucoma patients operated at Clinical hospital Rijeka. Patients and methods: The medical documentation of all cataract surgery patients at the Clinic for ophthalmology, Clinical hospital Rijeka was analyzed in the period from January 1, 2019 to June 1, 2019. From medical documentation analyzed: preoperative findings, intraoperative findings and findings of postoperative control. From the above documentation the following data were analyzed: demographic characteristics of the patient, the presence of glaucoma and glaucoma type, the presence of PEX, the type of cataract operation, intraoperative complications, complications after surgery and type of complications. Results: A total of 670 patients undergoing cataract surgery were analyzed, of which 398 (58.1%) women and 281 (41.9%) men. The incidence of complications of cataract surgery in patients with glaucoma is 69.1% (n = 76). By statistically comparing two groups, patients with glaucoma and patients without glaucoma, a statistically significant difference in the incidence of complications was obtained (χ2 = 25,404, df = 1, p < 0,01). As the most common intraoperative complication, prolapse of the iris (n = 12) (32.4%) occurred, and as the most common postoperative complication keratopathy (n = 227) (74.2%)occurred. Conclusion: The incidence of complications of cataract surgery in glaucoma patients is 69.1%, which is statistically significantly higher compared to the incidence of complications of catarac surgery in patients without glaucoma.