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Paired-eye comparison of medical therapies for glaucoma

Authors Solish A, Walt J, Chiang T, solish

Published 29 September 2010 Volume 2010:4 Pages 1131—1135


Review by Single-blind

Peer reviewer comments 3

Alfred M Solish1,2, Friedericke James1, John G Walt3, Tina H Chiang3
1Southern California Glaucoma Consultants, Pasadena CA, USA; 2Jules Stein Eye Institute, University of California Los Angeles, Los Angeles, 3Allergan Inc., Irvine, CA, USA

Objective: To evaluate efficacy and patient preference retrospectively among intraocular pressure (IOP)-lowering prostamide and prostaglandin medications in a real-world clinical setting.
Methods: Chart review of patients with uncontrolled glaucoma or ocular hypertension seen at a private practice clinic (n = 55) who received bimatoprost 0.03% once daily in one eye and either travoprost 0.004% or latanoprost 0.005% once daily in the fellow eye. IOP was evaluated at the initial visit and at a follow-up visit scheduled 4–6 weeks later. At the follow-up visit, each patient discussed the clinical results with their physician, chose which medication they preferred to continue using, and were queried regarding the reason for their choice. This paired-eye comparison method is used routinely in clinical practice to assess clinical response and involve patients in decisions regarding treatment. Change in mean IOP from baseline and patient medication choice were the outcome measures.
Results: Bimatoprost-treated eyes (n = 52) had a mean IOP reduction of 2.7 mmHg and travoprost-treated eyes (n = 47) had an average decrease of 1.7 mmHg (P = 0.230). Bimatoprost significantly reduced mean IOP (from 19.8 mmHg at baseline to 17.1 mmHg at follow-up, P < 0.0001), as did travoprost (from 19.4 mmHg at baseline to 17.7 mmHg at follow-up, P = 0.009). Latanoprost-treated eyes were excluded from the efficacy analysis due to small sample size (n = 5). For continued therapy, patients chose bimatoprost over travoprost by a factor of 2.4 to 1. Of the 15 patients who gave a reason for their choice, 80% said their decision was based primarily on IOP change.
Conclusions: Bimatoprost and travoprost were efficacious in reducing IOP among patients with uncontrolled glaucoma and ocular hypertension. Patients preferred bimatoprost over travoprost when trialed in fellow eyes.

Keywords: bimatoprost, travoprost, latanoprost, prostaglandin, prostamide

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