Fig. 1From: Assessment of macular function in patients with idiopathic Epiretinal membrane by multifocal Electroretinography: correlation with visual acuity and optical coherence tomographyRepresentative mfERG Images of a patient with idiopathic epiretinal membrane. a The first order trace array: the 103 hexagonal elements projected onto the corresponding retina area. b Ring averages: The 103 hexagonal elements that compose the six concentric rings. The mfERG responses showed significant reductions in P1 response amplitude densities in ring 1–2 and P1 implicit time in ring1Back to article page