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Abstract #18274 Published in IGR 3-3
Delayed suprachoroidal hemorrhage after glaucoma filtration procedures
Tuli SS; WuDunn D; Ciulla TA; Cantor LBOphthalmology 2001; 108: 1808-1811
OBJECTIVES: To determine the incidence of, risk factors for, and outcomes of delayed suprachoroidal hemorrhage (DSCH) after glaucoma filtration surgery. DESIGN: Retrospective case-control study. PARTICIPANTS: All patients undergoing glaucoma filtration procedures between 1986 and 2000 at Indiana University who were diagnosed postoperatively with suprachoroidal hemorrhage. A total of 66 patients with DSCH were identified. These were compared with a randomly selected group of patients who underwent similar procedures, but did not have suprachoroidal hemorrhage. METHODS: Total cases of DSCH were initially compared to the total number of glaucoma surgeries in order to determine the overall incidence and the incidence in the different procedures. Subsequently, a case-control study was performed comparing the group with hemorrhage to the control group in order to identify risk factors. Finally, outcomes and prognostic factors were determined by comparing vision pre- and postoperatively and parameters of patients with good and poor outcomes. MAIN OUTCOME MEASURES: Incidence of DSCH, risk factors associated with its occurrence, visual outcomes, and factors important for prognosis. RESULTS: Of a total of 2285 glaucoma filtration procedures, 66 (2.9%) cases of DSCH were identified. It developed in nine of 615 (1.5%) trabeculectomies without antimetabolite, in 30 of 1248 (2.4%) trabeculectomies with antimetabolite, in two of 72 (2.8%) valved tube shunt implantations, and in 25 of 350 (7.1%) nonvalved tube shunt implantations. The increased incidence of DSCH after tube shunts compared with trabeculectomy-associated DSCH was significant (p < 0.0001) with an odds ratio of 3.2. The risk factors for DSCH after glaucoma surgery include white race (p = 0.012), anticoagulation (p = 0.034), severe postoperative hypotony (p = 0.033), and aphakia/anterior chamber intraocular lens (p = 0.002). The visual outcomes of patients with hemorrhage were poor, with a decrease in logarithm of the minimum angle of resolution visual acuity from 0.72 to 1.36, which was statistically significant compared with the controls (p < 0.009). CONCLUSIONS: Delayed suprachoroidal hemorrhage occurs more frequently after tube shunt implantation than after trabeculectomy. Caution should be exercised when operating on patients with known risk factors, because the visual outcomes after DSCH are poor.
Dr D. WuDunn, Department of Ophthalmology, Indiana University, 702 Rotary Circle, Indianapolis, IN 46202, USA
Classification:
12.8.11 Complications, endophthalmitis (Part of: 12 Surgical treatment > 12.8 Filtering surgery)