Objective: To compare bimatoprost with timolol maleate in patients with glaucoma or ocular hypertension.Methods: In 2 identical, multicenter, randomized, double-masked, 1-year clinical trials, patients were treated with 0.03% bimatoprost once daily (QD) (n=474), 0.03% bimatoprost twice daily (BID) (n = 483), or 0.5% timolol maleate BID (n = 241).Main Outcome Measures: Diurnal intraocular pressure (IOP) at 8 AM, 10 AM, and 4 PM and safety variables (IOP was also measured at 8 PM at selected sites).Results: Bimatoprost QD provided significantly lower mean IOP than timolol at every time of the day at each study visit (PϽ.001). This was also true for bimatoprost CLINICAL SCIENCES

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