Eye Disease

Testing

Weeden Eye Clinic 662-539-7801

Corinth Eye Clinic 662-286-8860

Electroretinography and Visual Evoked Potential Testing

Electroretinography (ERG) and Visual evoked potential (VEP) are two tests used to evaluate the function of the retina, the part of the eye responsible for sensing light and sending visual signals to the brain. These tests may be performed during your eye and vision exam, and they are non-invasive, painless, and safe.

Electroretinography (ERG)

Electroretinography (ERG) is a test that measures the electrical activity of the retina in response to light stimulation. During the test, electrodes are placed on the skin around the eye to record the electrical signals produced by the retina. You will be asked to look at a bright light or a series of lights, and the electrical signals produced by the retina in response to this stimulation will be recorded and analyzed.

ERG can provide important information about the health of the retina and the function of the photoreceptor cells, which are responsible for converting light into electrical signals.

Electroretinography (ERG) can be used to aid in the diagnosis of several ocular conditions, including:

Retinal detachment

ERG can detect changes in the electrical activity of the retina, which can indicate retinal detachment.

Macular degeneration

ERG can detect changes in the function of the photoreceptor cells in the macula, which can indicate age-related macular degeneration.

Inherited retinal diseases

ERG can detect changes in the electrical activity of the retina that are characteristic of certain inherited retinal diseases, such as retinitis pigmentosa.

Diabetic retinopathy

ERG can detect changes in the electrical activity of the retina that are indicative of diabetic retinopathy, a common complication of diabetes that affects the retina.

Visual evoked potential (VEP)

Visual evoked potential (VEP) is a test that measures the electrical activity of the visual cortex, the part of the brain responsible for processing visual information. During the test, electrodes are placed on the scalp to record the electrical signals produced by the visual cortex in response to a visual stimulus, such as a flashing checkerboard pattern.

Like ERG, VEP is a non-invasive and painless test that provides important information about the health of the visual system. It can be used to diagnose and monitor conditions such as optic neuritis, multiple sclerosis, and amblyopia (lazy eye).

Both ERG and VEP are important tests for evaluating the function of the retina and visual system. They are non-invasive, painless, and safe, and they provide valuable information that helps your eye doctor diagnose and monitor conditions affecting the eyes and vision.