The role of multifocal electroretinogram (mfERG) in diagnosing and monitoring various retinal disorders, including diabetic retinopathy, has been well documented.
A mfERG provides a sensitive objective assessment of local retinal health and retinal function across a 60 degree field. The binocular test is performed by presenting a series of pattern stimulus to the patient while their fixation is monitored by the optional eye-tracking camera. Superb signal-to-noise ratio permits the use of DTL electrodes to detect the microvolt responses across the retina in various three degree locations. The system combines the signal responses into one easy-tointerpret comprehensive report, which includes a comparison against normative data. Localised functional abnormalities of the retina, reflected by delays in mfERG responses, often precede the onset of new structural signs of diabetic retinopathy.
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