Visual Evoked Response(VER)

The Visually Evoked Response test (VER), also known as the Visually Evoked Potential test (VEP).

Indications for VER/VEP: Test for Optic Neuritis or other demyelinating events along the Optic Nerve or further back along the optic pathways.

The test involves watching a black and white checkered pattern on a TV screen in a darkened room. The black and white squares alternate on a regular cycle which generates electrical potentials along the optic nerve and into the brain.

Pre Test Preparations: : Make sure you get plenty of sleep the night before. If you wear glasses, make sure you bring these along with you to the test. You are usually able to eat a normal meal and take your usual medications prior to the test. However any medications that may make you drowsy should be avoided. Arrive on time and try to relax before the test. On the day of the test, you should also let the technician know if you have any eye conditions such as cataracts or glaucoma as this can affect the test and should be noted in your records by the doctor.