Visual Evoked Potential Test

Definition

A visual evoked potential test (VEP) is used to look for problems in the brain that affect vision. A machine records brain waves related to the nerves that make up the visual pathway.

Optic Nerve and Muscles
AR00018 96472 optic
Copyright © Nucleus Medical Media, Inc.

Reasons for Test

This test is often used to:

  • Diagnose and follow multiple sclerosis (MS)
  • Test vision in children and adults who are unable to read eye charts

There are many symptoms that might lead your doctor to order a VEP. You may be having double vision, blurred vision, or loss of part or all of your vision.

Possible Complications

There are no major complications associated with this procedure.

What to Expect

Prior to Test

You will be given instructions to prepare for the test, such as:

  • Wash your hair. Avoid hair chemicals such as hair sprays and gels.
  • Get a good night’s sleep.
  • Bring your corrective eyewear.

Description of Test

Wires will be attached to your scalp with tape. A patch will be placed over one eye. You will watch a screen with your other eye. The process is then repeated with the opposite eye covered.

The wires will be removed from your head.

After Test

You will be able to leave after the test is done.

How Long Will It Take?

About 45 minutes

Will It Hurt?

No

Results

Your doctor will discuss the results with you and any further treatment that may be needed.

Call Your Doctor

Call your doctor if you have any concerns.

In case of an emergency, call for medical help right away.

Revisions

All EBSCO Publishing proprietary, consumer health and medical information found on this site is accredited by URAC. URAC's Health Web Site Accreditation Program requires compliance with 53 rigorous standards of quality and accountability, verified by independent audits. To send comments or feedback to our Editorial Team regarding the content please email us at HLEditorialTeam@ebscohost.com.

This content is reviewed regularly and is updated when new and relevant evidence is made available. This information is neither intended nor implied to be a substitute for professional medical advice. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with questions regarding a medical condition.

Editorial Policy | Privacy Policy | Terms and Conditions | Support
Copyright © 2008 EBSCO Publishing. All rights reserved.

Anxiety, nervousness, stress and tension can take a toll on your unborn baby’s health. Avoid the triggers and learn to stay calm by using techniques like meditation and yoga.