Analysis of bioelectrical signal of the human retina (ERG) using LabVIEW

Abstract

ERG is the recording of electrical potentials evoked by a flash of light and picked up at the cornea of the eye using contact lens electrode. This paper aims to demonstrate the possibility of finding features reliable for more precise distinguishing between standard and abnormal Electroretinogram (ERG) recordings. Understanding the specific features (onset, time delay, amplitude, line shape) of the ERG components and their relationship represents the principal aim of past and present research in the field of ocular electrophysiology. ERG waveforms are simulated in LabVIEW then Analysis is carried out to detect abnormalities. ERG belonging to a subject with abnormality called Achromatopsia (ACR) and ERG belonging to a subject with abnormality called Congenital Stationary Blindness (CSNB) are simulated and analyzed. The proposed system is readily usable low cost alternative to sophisticated costly equipments used in hospitals for the ERG signal analysis purpose.