Visual evoked potential & ERG tests
Precision Scanning & Imaging Systems
Visual Evoked Potential (VEP) and Electroretinogram (ERG) tests measure electrical responses in the visual pathway, aiding diagnosis in infants and children.
Understanding Visual Evoked Potential (VEP) and Electroretinogram (ERG) Tests
Visual Evoked Potential (VEP) and Electroretinogram (ERG) tests measure electrical responses in the visual pathway to assess visual function. Electrodes placed on the head and cheeks detect signals from the brain and retina. These tests are particularly useful for infants or children who cannot communicate their visual abilities, with no known risks involved.
Electrical Responses
VEP measures the electrical response from the brain to visual stimuli, while ERG captures the retina’s electrical signals after light flashes.
Testing Method
Electrodes are placed on the back of the head for VEP and on the cheeks for ERG to collect data.
Diagnostic Utility
These tests help identify issues in the visual pathway, including the retina, optic nerve, or brain, and estimate pattern vision quality.
Use in Children
VEP and ERG are particularly beneficial for infants and children who cannot communicate their visual capabilities, with no associated risks.
