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Ophthalmologica. Journal international d'ophtalmologie. International journal of ophthalmology. Zeitschrift fur Augenheilkunde

Switch from intravitreal ranibizumab to bevacizumab for the treatment of neovascular age-related macular degeneration: clinical comparison.


PMID 25196907

Abstract

To compare outcomes after switching from intravitreal ranibizumab to bevacizumab in neovascular age-related macular degeneration (AMD). 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. 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). 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.

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