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Abstract #10133 Published in IGR 6-1

Intraocular pressure-reducing effects and safety of latanoprost versus timolol in patients with chronic angle-closure glaucoma

Chew PT; Aung T; Aquino MV; Rojanapongpun P; EXACT Study Group
Ophthalmology 2004; 111: 427-434


OBJECTIVE: To demonstrate that the intraocular pressure (IOP)-reducing effect of latanoprost once daily is at least as good as that of timolol twice daily in patients with chronic angle-closure glaucoma (CACG). DESIGN: Randomized, double-masked, multicenter 12-week study. PARTICIPANTS: In all, 137 patients with unilateral or bilateral CACG were treated with latanoprost, and 138 were treated with timolol. METHODS: Patients received either latanoprost (9 pm) and a placebo (9 am) or timolol (both 9 am and 9 pm). IOP was measured at 9 am and 5 pm at baseline and weeks 2, 6, and 12. MAIN OUTCOME MEASURES: The difference between groups in daily IOP (average of 9 am and 5 pm measures) reduction was the primary outcome. Secondary outcomes included differences between groups in IOP reductions at 9 am and 5 pm, and in proportions of patients reaching specified daily IOP levels. RESULTS: Using repeated measures (analysis of covariance: intent to treat), mean changes from baseline in daily IOP levels during 12 weeks were -8.2 and -5.2 mmHg for latanoprost- and timolol-treated patients, respectively (difference: -3.0 mmHg (95% confidence interval: -4.0, -2.1), p < 0.001). Greater reductions in IOP levels at both 9 am and 5 pm were found in latanoprost-treated patients (p < 0.001 for both), and greater proportions of patients receiving latanoprost reached prespecified target daily IOP levels (p < 0.001 for all three target levels tested). Both drugs were well tolerated. CONCLUSION: Latanoprost administered once daily provides significantly greater IOP reduction in CACG patients than timolol instilled twice daily.

Dr. P.T. Chew, Department of Ophthalmology, National University Hospital, 5 Lower Kent Ridge Road, Main Building Level 3, Singapore 119074. ophchewp@nus.edu.sg


Classification:

11.3.4 Betablocker (Part of: 11 Medical treatment > 11.3 Adrenergic drugs)
11.4 Prostaglandins (Part of: 11 Medical treatment)



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