Related Experiment Video
Updated: May 1, 2026

Author Spotlight: A Novel Protocol for Intracameral Injections to Enhance Precision in Rodent Ophthalmology
Published on: May 31, 2024
Treat-and-extend intravitreal bevacizumab for branch retinal vein occlusion
Background And Objective:
To determine the effectiveness and direct medical costs of treat-and-extend (TAE) intravitreal bevacizumab (IVB) for the treatment of branch retinal vein occlusion (BRVO)-associated macular edema (ME).
Patients And Methods:
Retrospective chart review of 52 consecutive patients diagnosed with BRVO-associated ME treated with IVB using a TAE protocol.
Results:
Mean change in logMAR vision was -0.30 (P < .001), and mean change in central macular thickness was -244.0 μm (P < .001). The mean number of injections was 8.2 (95% CI; 7.8 to 8.6). The yearly average direct cost of the TAE regimen was calculated to be $2,580.26 per patient.
Conclusion:
Treatment of BRVO-associated ME with IVB using a TAE regimen resulted in similar visual outcomes and number of intravitreal injections as did as-needed treatment with 0.5 mg ranibizumab conducted in phase 3 trials but with fewer visits and lower annual medical costs.
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