Two-year outcomes of pro re nata ranibizumab monotherapy for exudative age-related macular degeneration in Japanese patients
Authors Yamamoto A, Okada AA, Sugitani A, Kunita D, Rii T, Yokota R
Received 30 December 2012
Accepted for publication 28 February 2013
Published 19 April 2013 Volume 2013:7 Pages 757—763
Checked for plagiarism Yes
Review by Single-blind
Peer reviewer comments 4
Akiko Yamamoto,1 Annabelle A Okada,1 Atsuhiko Sugitani,1,2 Daisuke Kunita,1 Tosho Rii,1 Reiji Yokota1
1Department of Ophthalmology, Kyorin University School of Medicine, Tokyo, Japan; 2Department of Ophthalmology, Kugayama Hospital, Tokyo, Japan
Purpose: To describe outcomes of intravitreal ranibizumab using a pro re nata regimen for treatment-naive exudative age-related macular degeneration (AMD), in Japanese patients over the first 2 years.
Methods: Clinical records were retrospectively reviewed of 48 eyes of 48 patients with treatment-naive exudative AMD who underwent intravitreal ranibizumab therapy. After three monthly injections (induction), patients were examined monthly, and subsequent injections were performed as needed (pro re nata) for any residual activity, by fundus biomicroscopy and imaging studies, regardless of severity.
Results: Twenty-nine (60%) of the patients were men, and 19 (40%) were women; the mean age was 76.1 years. Of the 48 eyes evaluated, 17 (35%) had findings consistent with polypoidal choroidal vasculopathy, and five (10%) with retinal angiomatous proliferation. A mean of 6.0 ranibizumab injections were given in the first year, 3.5 in the second year, and 9.5 over the 2-year period. The best-corrected visual acuity (logarithm of minimum angle of resolution) improved significantly, from 0.35 at baseline to 0.21 at 12 months (P < 0.01), and remained stable at 0.21 at 24 months (P < 0.01). The mean central macular thickness decreased significantly, from 355.4 µm at baseline to 237.9 µm at 12 months (P < 0.01) and 247.7 µm at 24 months (P < 0.01).
Conclusion: Improved visual acuity and decreased central macular thickness were observed and maintained over a 2-year period, in a Japanese population receiving 3 monthly induction injections followed by a pro re nata regimen of ranibizumab for exudative AMD.
Keywords: optical coherence tomography, polypoidal choroidal vasculopathy, retinal angiomatous proliferation
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