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  • Title: Intravitreal anti-VEGF bevacizumab (Avastin) for external beam related radiation retinopathy.
    Author: Finger PT, Mukkamala SK.
    Journal: Eur J Ophthalmol; 2011; 21(4):446-51. PubMed ID: 21218391.
    Abstract:
    PURPOSE: To report on intravitreal bevacizumab treatment for external beam radiation therapy (EBRT)-related radiation maculopathy. METHODS: Three patients (4 eyes) with EBRT-related maculopathy were treated with periodic (4- to 8-week) intravitreal injections of bevacizumab (1.25 mg in 0.05 cc). Outcome measures included best-corrected Early Treatment Diabetic Retinopathy Study visual acuity, retinal examination, fundus photography, fluorescein angiography, and optical coherence tomography. RESULTS: Patients were diagnosed with Stage 3 radiation maculopathy occurring 12, 19, and 48 months after irradiation. One received 50 Gy of 6-MV photon EBRT for a maxillary carcinoma, the second 30.6 Gy of 6-MV photon EBRT for intraocular lymphoma, and the third 72 Gy proton beam irradiation for adenoid cystic carcinoma of the lacrimal gland. With up to 33 months follow-up, visual acuities improved (8 and 11 letters) in 2 eyes, gained 5 letters in 1 eye and 1 decreased 5 letters from 20/16 to 20/20. All cases demonstrated clinical findings of decreased intraretinal hemorrhages, cotton-wool spots, and retinal edema. There were no significant ocular or systemic side effects. CONCLUSIONS: Intravitreal anti-VEGF therapy was associated with reductions of EBRT-related retinopathy. No ocular or systemic side effects were noted. Anti-VEGF therapy may be considered radiation maculopathy secondary to EBRT.
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