Journal
OPHTHALMOLOGICA
Volume 232, Issue 3, Pages 149-155Publisher
KARGER
DOI: 10.1159/000363422
Keywords
Age-related macular degeneration; Ranibizumab; Bevacizumab; Visual acuity
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Objective: To compare outcomes after switching from intravitreal ranibizumab to bevacizumab in neovascular age-related macular degeneration (AMD). Methods: A retrospective review of 110 eyes treated in a 1+PRN (pro re nata) clinical setting with ranibizumab that were switched to bevacizumab. Patients analyzed had at least 3 ranibizumab injections followed by at least 3 bevacizumab injections. Changes in best-corrected visual acuity (BCVA), retinal thickness and frequency of injections were compared. Results: The mean duration of ranibizumab treatment was 18.1 months, followed by 12.2 months of bevacizumab. Mean injection rates per month were similar (0.54 and 0.56 respectively, p = 0.230). There were no significant differences between BCVA at baseline and at the time of the switch (52.4 and 54.8 letters, p = 0.059). After the switch, there was a statistically significant decrease in BCVA to 51.7 letters (p < 0.001). Conclusion: Switching patients to bevacizumab may have a minor negative effect on the initial gain obtained with ranibizumab; however the degenerative history of wet AMD could explain this small variation in visual acuity. (C) 2014 S. Karger AG, Basel
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