A six-month randomized clinical trial comparing the intraocular pressure-lowering efficacy of bimatoprost and latanoprost in patients with ocular hypertension or glaucoma☆
Accepted 19 August 2002.
Abstract
Purpose
To compare the intraocular pressure (IOP)-lowering efficacy and safety of topical bimatoprost 0.03% with latanoprost 0.005%.
After washout of glaucoma medications, ocular hypertension or glaucoma patients were randomly assigned to once-daily bimatoprost 0.03% (n = 133) or latanoprost 0.005% (n = 136) for 6 months. The primary outcome measure was mean change from baseline IOP (8 am, 12 pm, 4 pm). Secondary measures included mean IOP, ophthalmologic examination, adverse events, and the percentage of patients reaching specific target IOPs.
Results
Mean change from baseline IOP was significantly greater for bimatoprost patients than for latanoprost patients at all measurements on each study visit; 1.5 mm Hg greater at 8 am (P < .001), 2.2 mm Hg greater at 12 pm (P < .001), and 1.2 mm Hg greater at 4 pm (P = .004) at month 6. At the end of the study, the percentage of patients achieving a ≥20% IOP decrease was 69% to 82% with bimatoprost and 50% to 62% with latanoprost (P ≤ .003). In addition, the distribution of patients achieving target pressures in each range (≤13 to ≤ 15 mm Hg, >15 to ≤ 18 mm Hg, and > 18 mm Hg) showed that bimatoprost produced lower target pressures compared with latanoprost at all times measured (P ≤ .026). Few patients were discontinued for adverse events (6 on bimatoprost; 5 on latanoprost). On ophthalmologic examination, conjunctival hyperemia (P < .001) and eyelash growth (P = .064) were more common in bimatoprost patients.
Conclusions
Bimatoprost is more effective than latanoprost in lowering IOP. Both drugs were well tolerated, with few discontinuations for adverse events.
aUniversity of Arizona (R.S.N.), Tucson, Arizona, USA
bBlack Hills Regional Eye Institute (M.S.D.), Rapid City, South Dakota, USA
cEye Care of San Diego (N.T.C.), San Diego, California, USA
dAllergan, Inc. (P.B., A.L.B., S.M.W.), Irvine, California, USA
Inquiries to Scott M. Whitcup, MD, 2525 Dupont Dr, Irvine, CA, 92612-1599 USA; fax: (714) 246-6756;
☆ This study was supported by Allergan, Inc. Paula Bernstein, Amy L. Batoosingh, and Scott M. Whitcup are employees of Allergan, Inc.
InternetAdvance publication at ajo.com Oct 1, 2002.
ABSTRACT