ArticleClinical ophthalmology (Auckland, N.Z.)2026
Real-World Analysis of Switching Between Ranibizumab Biosimilars: Safety and Results - a Multicenter Retrospective Observational Study.
Article in Clinical ophthalmology (Auckland, N.Z.), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Authors and funding
8 authors.
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Abstract
Purpose: To describe disease-specific visual, anatomical, treatment-exposure, and documented safety outcomes over 24 weeks among eyes undergoing availability-driven switching between ranibizumab biosimilars in routine retinal practice in India. Methods: This multicenter retrospective observational cohort study reviewed records from January to December 2024. Baseline was the index-switch visit, before administration of the substituted ranibizumab biosimilar. Only one eye per patient was included; when both eyes were eligible, the right eye was selected by convention. Eligible eyes had at least one documented availability-driven biosimilar-to-biosimilar switch and complete 24-week follow-up. Outcomes were summarized descriptively because there was no non-switch comparator group. Results: Of 742 screened eyes, 595 eyes from 595 patients met the inclusion criteria and received 1625 intravitreal ranibizumab biosimilar injections over 24 weeks (mean, 2.73 injections per eye). One switch was recorded in 466 eyes (78.3%) and two switches in 129 eyes (21.7%). Mean BCVA improved from 0.57 logMAR at baseline to 0.26 at 12 weeks and 0.32 at 24 weeks; the early visual improvement therefore attenuated modestly by week 24 but remained better than baseline. Mean central macular thickness decreased from 490.4 micrometers at baseline to 273.6 micrometers at 24 weeks. At final follow-up, 369 eyes (62.0%) gained at least two lines and 488 eyes (82.0%) maintained or improved vision. No endophthalmitis, retinal detachment, or treatment-related systemic adverse event was documented in the available clinical records. Conclusion: Eyes exposed to availability-driven switching between ranibizumab biosimilars showed favorable short-term visual and anatomical outcomes over 24 weeks. Because this retrospective study lacked a non-switch comparator and protocol-mandated safety or immunogenicity surveillance, it cannot establish an effect attributable to switching, comparative safety, equivalence, or formal interchangeability.
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