Visual Evoke Potential Test
Visual Evoke Potential (VEP) utilizes electrophysiological technology to measure the electrical activity in the vision system. When light enters your eye, the light converts into electrical energy by the retina. This energy then travels through the optic nerve to the visual cortex of the brain which processes vision. This test can measure the strength and speed of this signal.
Pattern Electroretinography (ERG) utilizes electrophysiological technology to measure the function of your retina, the light sensitive layer at the back of your eye. When light enters your eye, it is converted into electrical energy by specialized cells in the retina. These cells send electrical impulses through the optic nerve to the brain which processes vision. The ERG test records how well the cells of the retina are conveying electrical impulses within the eye.
VEP & ERG can detect ocular diseases like diabetic retinopathy, glaucoma, or macular degeneration.