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Updated: May 11, 2026

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Intravitreal Injections in the Ovine Eye
Published on: July 5, 2022
Intravitreal anti-VEGF therapy for retinal macroaneurysm
S A Zweifel1, M S Tönz, L Pfenninger
1University Hospital Zurich, Department of Ophthalmology, Zurich, Switzerland. sandrine.zweifel@gmail.com
Summary
Intravitreal anti-vascular endothelial growth factor (VEGF) therapy with bevacizumab or ranibizumab effectively treated retinal macroaneurysms and macular exudation, improving visual acuity and reducing retinal thickness.
Area of Science:
- Ophthalmology
- Medical Retina
- Vascular Diseases
Background:
- Retinal macroaneurysms with macular exudation pose a significant challenge in ophthalmology.
- Current treatment options may have limitations, necessitating evaluation of alternative therapies.
Purpose of the Study:
- To evaluate the efficacy of intravitreal anti-vascular endothelial growth factor (VEGF) therapy using bevacizumab or ranibizumab for retinal macroaneurysms with macular exudation.
Main Methods:
- A retrospective interventional case series was conducted.
- Patients received either intravitreal bevacizumab (1.25 mg) or ranibizumab (0.5 mg) as first-line therapy.
- Fluorescein angiography and optical coherence tomography were used for imaging, with retreatment for persistent fluid.
Main Results:
- Ten patients with macular macroaneurysms received an average of 3.0 anti-VEGF injections.
- Mean best-corrected visual acuity improved by 17 letters.
- Marked regression of macular exudation was observed in 80% of patients, with decreased central retinal thickness in those with foveal involvement.
Conclusions:
- Intravitreal anti-VEGF therapy is a promising alternative to laser treatment for retinal macroaneurysms with macular exudation.
- This treatment approach demonstrated significant visual and anatomical improvements.
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