Journal
OPHTHALMOLOGY
Volume 114, Issue 7, Pages 1248-1254Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ophtha.2007.03.012
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Purpose: To compare efficacies of adjunctive therapy with brimonidine 0.15% and adjunctive therapy with brinzolamide 1 % in combination with travoprost 0.004%. Design: Three-month randomized, parallel-group, double-masked, multicenter clinical trial. Participants: Patients with primary open-angle glaucoma, exfoliation glaucoma, or ocular hypertension with intraocular pressure (IOP) > 18 mmHg on monotherapy with travoprost (N = 163). Methods: Patients were randomized to receive adjunctive therapy with twice-daily brimonidine (N = 79) or twice-daily brinzolamide (N = 84). Treatment efficacy was assessed after 1 and 3 months of combination therapy. Intraocular pressure was measured at 8 AM, noon, and 4 Pm at baseline (on travoprost monotherapy) and after 3 months of combination therapy. Mean diurnal IOP was defined as the average of the IOP measurements at these 3 time points. Adverse events were recorded at each visit. Main Outcome Measure: Difference between treatment groups in mean diurnal IOP at month 3, adjusted for difference in baseline IOP, using analysis of covariance. Results: Mean diurnal IOPs (+/- standard error of the mean) at baseline were 21.7 +/- 0.33 mmHg in the brimonidine group and 21.1 +/- 0.29 mmHg in the brinzolamide group (P = 0.16). Mean diurnal IOPs at month 3 were 19.6 +/- 0.41 mmHg in the brimonicline group and 18.4 +/- 0.33 mm Hg in the brinzolamide group (P = 0.019). At month 3, mean diurnal IOPs, adjusted for difference in baseline IOP, were 19.3 +/- 0.27 in the brimonicline group and 18.6 +/- 0.25 in the brinzolamide group (P = 0.035). Conclusions: The combination of travoprost and brinzolamide was statistically significantly more efficacious than the combination of travoprost and brimonidine in lowering IOP. The clinical significance of this difference uncertain.
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