Vestibular and Oculomotor (Eye Movement) Testing
Oculomotor tests check how your eyes move, follow objects, and stay steady. Your eyes and brain work together to control these movements.
Vestibular tests check how your inner ears, brain, and eyes work together to support clear vision and balance. Together, these tests may give your provider clues about the cause of dizziness or balance problems. The results are considered along with your symptoms and other examination findings. One test alone usually cannot provide a complete diagnosis.
Why Am I Having These Tests?
This testing is often part of a brain, balance, or vestibular exam. Your provider may use it to check:
- How well your eyes follow a moving object
- How quickly and correctly your eyes move between targets
- Whether your eyes stay steady when you look in different directions
- Whether your eyes stay focused while your head moves
- Whether you have nystagmus
Nystagmus is a repeated eye movement that you cannot control. Some nystagmus is expected during certain tests. Other patterns may give your provider clues about a problem in the inner ear or brain.
Is Vestibular and Oculomotor Testing Safe?
Yes. The test does not use needles, radiation, or surgery. Your provider simply watches or records your eye movements.
Some parts of a longer vestibular exam may briefly make you feel dizzy, sick to your stomach, or unsteady. Most people handle these tests well, and the symptoms usually improve soon after testing.
Before Your Appointment
Follow the instructions from your testing center. Your provider may ask you to:
- Bring a list of your symptoms and when they began
- Avoid eye makeup if goggles or sticky sensors will be used
- Bring a list of all medicines and supplements you take
- Avoid certain medicines for a short time before testing
Some medicines, such as meclizine (also called Antivert) sedatives, or certain nausea medicines, can change the results of some vestibular tests.
Do not stop taking any medicine unless your provider tells you to do so.
What to Wear
- Wear comfortable clothes.
- Pull long hair away from your face, if possible.
- Avoid heavy eye makeup if goggles will be used.
What to Bring
- Photo ID
- Insurance card
- A list of your medicines
- Glasses, contact lenses, or hearing aids
- Notes about your symptoms
- A list of movements, places, or activities that trigger your symptoms
Should I Bring a Driver?
A simple eye movement exam may not require a driver. However, a longer vestibular test may make you dizzy or unsteady.
Ask your testing center if you should arrange for someone to drive you home. Do not drive until you feel safe, alert, and steady.
During Vestibular and Oculomotor Testing
How Do the Tests Work?
Your provider may watch your eyes in room light. You may be asked to look at a target, follow a moving object, or move your eyes quickly between two targets.
Your provider may also test how your eyes respond when your head moves. This checks how your eyes and balance system work together to keep your vision clear.
Some tests use special goggles or Frenzel lenses. These tools make your eyes easier to see. Infrared goggles can record your eye movements in the dark.
Looking at a fixed object can sometimes hide nystagmus. Testing in the dark or with special lenses makes certain eye movements easier to see.
What May Be Checked in Room Light?
- Eye movements at rest: Checks whether your eyes move when you are looking straight ahead.
- Gaze testing: Checks whether your eyes stay steady when you look in different directions.
- Saccade testing: Checks how quickly and accurately your eyes move between targets.
- Smooth-pursuit testing: Checks how smoothly your eyes follow a moving target.
- Optokinetic testing: Checks how your eyes respond while watching moving stripes or dots.
- Head impulse or head-thrust test: Checks whether your eyes stay focused during small, quick head movements.
- Eye alignment and convergence testing: Checks whether your eyes line up and move together.
What May Be Checked With Goggles or in the Dark?
- Eye movements at rest: Checks for unusual eye movements that may be harder to see when you focus on an object.
- Gaze holding test: Checks whether your eyes stay steady when you look in different directions without focusing on a visible target.
- Head shake test: Checks your eye response after your head is moved quickly from side to side.
- BPPV testing: Moves your head and body in different positions to check for a common cause of vertigo and dizziness, Benign Paroxysmal Positional Vertigo (BPPV).
Infrared goggles block your view while allowing the clinician to see and record your eyes.
These tests may help show how the inner ear, brain, and eyes work together. The exact tests will depend on your symptoms and the type of exam being performed.
How Might I Feel?
Most people do well during the test. You may briefly feel:
- Dizzy
- Lightheaded
- Sick to your stomach
- Unsteady
These feelings are often mild and improve soon after the test. Tell your provider if you need a break.
Questions You May Want to Ask Your Provider
To learn more about the next steps in your treatment journey, it may be helpful to ask questions like:
- Were any findings unusual?
- What might the findings mean?
- Do I need more testing?
- What are the next steps?
After the Test
How Will I Feel?
Many people feel normal right away and return to their usual activities. Some people feel mildly dizzy or unsteady for a short time.
What Should I Do?
- Move slowly if you feel dizzy.
- Use a wall, railing, or another person for support if needed.
- Avoid driving until you feel safe and steady.
- Follow any instructions given by your provider.
When Will I Get the Results?
Your provider may explain the findings on the same day. In some cases, recordings must be reviewed before the results are ready.
Ask your provider when and how you will receive your results.
When Should I Get Emergency Help?
Call 911 right away if you have sudden dizziness with possible stroke signs, such as:
- Face drooping
- New weakness or numbness, especially on one side
- Trouble speaking or understanding speech
- New trouble seeing
- A sudden, severe headache
- New trouble walking
- Loss of balance or coordination
Do not drive yourself to the hospital if you may be having a stroke.
Key Points to Remember
- Vestibular and oculomotor tests check your eye movements and how your eyes, inner ears, and brain work together.
- Some tests check the brain pathways that control eye movements.
- Other tests check how your eyes respond to head or body movement.
- Not everyone needs every test. Your provider will choose tests based on your symptoms, health history, and safety.
- The tests are generally safe, but some may briefly cause dizziness or nausea.
- An unusual result is a clue. It does not always provide a diagnosis by itself.
- Results should be reviewed along with your symptoms and other examination findings.
- Testing should be performed and reviewed by a trained healthcare professional, such as an audiologist, an ENT doctor, a neurologist, or a physical or occupational therapist with vestibular training.
Additional Resources
- Vestibular Disorders Association (VEDA) – Vestibular Examination: Oculomotor Testing
- Stroke Manual – Assessment of oculomotor function | STROKE MANUAL
- Cleveland Clinic – Oculomotor Nerve (Cranial Nerve 3): What It Is & Function