The electroretinogram (ERG) is a diagnostic test that measures the electrical activity of the retina in response to a light stimulus. The ERG arises from currents generated directly by retinal neurons in combination with contributions from retinal glia.

Oct 9, 2022 · The multifocal electroretinogram (mfERG) is a more recent advancement in electroretinographic testing, which enables a rapid assessment of retinal function from many areas simultaneously.

Dec 15, 2004 · The multifocal ERG is an objective method for following patients with extinguished full-field ERG (See Figure 4). For example, the patient presented here has an extinguished ERG response, but a recordable and replicable mfERG.

What is a multifocal ERG? While a standard ERG detects activity of the entire retina, the multifocal ERG tests different areas of the retina, looking for localized areas of abnormality. This test takes longer than a standard ERG.

Attached to the MICRON imaging system, the Focal ERG enables precise targeting of specific retinal locations for study while preserving dark adaptation. It also supports a wide range of focal spot sizes.

Full-field electroretinography is a well-estab-lished clinical technique for evaluating global retinal function [1]. The multifocal ERG (mfERG) technique was developed to provide a topographic measure of retinal electrophysiological activity.

The most important development in ERGs is the multifocal ERG (mfERG). Erich Sutter adapted the mathematical sequences called binary m-sequences creating a program that can extract hundreds of focal ERGs from a single electrical signal.

In 1992, Sutter et al2 introduced the technique of multifocal ERG (mfERG). With this modification, many retinal areas are stimulated by multiple sequences at the same time and responses from different regions of the retina are recorded simultaneously.

Mar 15, 2018 · Visual electrodiagnostic testing encompasses the electroretinogram (ERG), visual evoked potential (VEP) and electro-oculogram (EOG) tests, which allow localization of functional deficits of the retina, optic nerve and post-chiasmatic …

What is Multifocal ERG? A specialized form of pattern ERG is the multifocal ERG (mfERG) which allows for a different spatial understanding of abnormalities in the central part of the retina.