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Y.-H. Ohn, H. Kim, H. Lee, J. Park; Electrophysiological and Morphological Changes After Intravitreal Bevacizumab Injection in Patients With Macular Edema and Choroidal Neovascularization. Invest. Ophthalmol. Vis. Sci. 2009;50(13):5418.
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© ARVO (1962-2015); The Authors (2016-present)
To investigate the functional and morphological changes after intravitreal bevacizumab (Avastin®) injection in patients with macular edema and choroidal neovascularization (CNV) using multifocal electroretinography (mfERG) and Optical coherence tomography (OCT).
Intravitreal bevacizumab injections were performed on 60 eyes of 52 patients who were diagnosed as age-related macular degeneration (ARMD), diabetic macular edema (DME) and retinal vein occlusion (RVO). mf ERG and OCT were recorded before and after the injection to analyze the macular function and central macular thickness (CMT). Mean interval from the injection to performing test was 5.6 ± 4.0 months and mean injection times were 2.4 ± 1.3.
Mean central macular thickness was reduced from 374.33± 101.4 to 249.01 ± 115.1 µm after injection. Improvement of CMT was correlated with improvement of visual acuity (p<0.05). N1 latency was decreased significantly after the injection on ring 1 (p<0.05). N2 latency and P1 latency were decreased significantly on ring 1 and 2 (p<0.05). P1 amplitude was increased significantly on ring 1 and 2 (p<0.05).
Morphological and functional improvement of macula were found after intravitreal bevacizumab injection using OCT and mfERG. Results of mfERG showed that latency might be more sensitive than amplitude. These results suggest that mfERG as well as OCT may be the useful tool to assess the effect of bevacizumab in patients with macular edema and CNV.
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