alexa Intravitreal bevacizumab (Avastin) for proliferative diabetic retinopathy: 6-months follow-up.
Ophthalmology

Ophthalmology

Journal of Clinical & Experimental Ophthalmology

Author(s): Arevalo JF, Wu L, Sanchez JG, Maia M, Saravia MJ,

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Abstract AIMS: To study the effects of intravitreal bevacizumab (Avastin) on retinal neovascularization (RN) in patients with proliferative diabetic retinopathy (PDR). METHODS: Retrospective study of patients with RN due to PDR who were treated with at least one intravitreal injection of 1.25 or 2.5 mg of bevacizumab. Patients underwent ETDRS best-corrected visual acuity (BCVA) testing, ophthalmoscopic examination, optical coherence tomography (OCT), and fluorescein angiography (FA) at baseline and follow-up visits. RESULTS: Forty-four eyes of 33 patients with PDR and a mean age of 57.2-years (range: 23-82 years) participated in the study. Thirty-three eyes (75\%) had previous panretinal photocoagulation (PRP). Twenty-seven eyes (61.4\%) showed total regression of RN on fundus examination with absence of fluorescein leakage, 15 eyes (34.1\%) demonstrated partial regression of RN on fundus examination and FA. Follow-up had a mean of 28.4 weeks (range from 24 to 40 weeks). BCVA and OCT demonstrated improvement (P<0.0001). Three eyes without previous PRP ('naive' eyes) and with vitreous haemorrhage have avoided vitreo-retinal surgery. One eye (2.2\%) had PDR progression to tractional retinal detachment requiring vitrectomy, and one eye (2.2\%) had vitreous haemorrhage with increased intraocular pressure (ghost cell glaucoma). No systemic adverse events were observed. CONCLUSIONS: Intravitreal bevacizumab resulted in marked regression of RN in patients with PDR and previous PRP, and rapid resolution of vitreous haemorrhage in three naive eyes. Six-months results of intravitreal bevacizumab at doses of 1.25 or 2.5 mg in patients with PDR do not reveal any safety concerns. This article was published in Eye (Lond) and referenced in Journal of Clinical & Experimental Ophthalmology

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