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C. Hvarfner, S. Andréasson, J. Larsson; Multifocal Electroretinography (mfERG) in Humans With Branc Retinal Vein Occlusion . Invest. Ophthalmol. Vis. Sci. 2003;44(13):4051.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To describe the alterations in the multifocal electroretinography (mf ERG) in patients with branch retinal vein occlusion (BRVO). Methods: 15 consecutive patients with temporal BRVO with duration of symptoms from 2-20 months were studied. Multifocal ERG was recorded using a visual evoked response imaging system (VERIS 4; EDI, San Mateo; California). The fixation was controlled using a fundus camera and illumination with infrared light from the recording electrode. The results were compared to 27 normals. Results: The mf ERG in the BRVO patients demonstrated significantly reduced amplitudes and prolonged latencies in the area of the posterior pole affected by the vein occlusion, compared to the unaffected area in the same eye. There were significant alterations in the mf ERG recorded from patients with BRVO compared to normals. Conclusions: Multifocal ERG is a clinical tool to demonstrate localized area of retinal dysfunction in patients with BRVO. Further studies will evaluate if this will help us to better understand the pathogenesis of this dysfunction and also if mf ERG has a predictive value in patients with BRVO.
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