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  • Title: The effect of latanoprost, bimatoprost, and travoprost on circadian variation of intraocular pressure in patients with open-angle glaucoma.
    Author: Yildirim N, Sahin A, Gultekin S.
    Journal: J Glaucoma; 2008; 17(1):36-9. PubMed ID: 18303382.
    Abstract:
    PURPOSE: To evaluate the efficacy of latanoprost, bimatoprost, and travoprost given in the evening over the 24-hour curve in newly diagnosed open-angle glaucoma patients. METHODS: This 8-week, randomized, parallel group, masked evaluator study compared the efficacy of once daily administration of latanoprost 0.005%, bimatoprost 0.03%, and travoprost 0.004% ophthalmic solutions. After enrollment at baseline, 48 patients were randomized to 3 treatment groups: latanoprost (n=17), bimatoprost (n=16), and travoprost (n=15). At baseline and 8 weeks of therapy, masked evaluators measured intraocular pressure (IOP) at 8 AM, 10 AM, 1 PM, 4 PM, 8 PM, 11 PM, and 3 AM. RESULTS: Baseline mean IOP levels were similar across the groups. By week 8, reductions were observed in all 3 groups (P<0.001 for each). Travoprost-treated patients' IOP levels were reduced 8.7 and 8.1 mm Hg at 8 and 10 AM, respectively. Latanoprost-treated patients experienced 4.8 and 5.3 mm Hg reductions, whereas bimatoprost-treated patients experienced 5.5 and 4.9 mm Hg reductions at these time points. The amount of IOP reduction seen at 8 and 10 AM in travoprost group was significantly higher when compared with latanoprost and bimatoprost-treated group (P<0.001). CONCLUSIONS: Latanoprost, bimatoprost, and travoprost were comparable in their ability to reduce IOP in open-angle glaucoma patients. On the basis of our data, the IOP reduction of these drugs is indistinguishable within statistical parameters.
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