Gaze Stabilization Exercises

This page is intended to be a reference for patients who have been referred for vestibular rehabilitation therapy. 

Timothy C. Hain, MD Click here for the main vestibular rehabilitation page. Page last modified: March 1, 2009

Gaze stabilization exercises.

An very simple illustration of the "Gaze Stabilization Exercises" is shown above. These are exercises aimed at improving vision while the head is moving, generally while viewing an earth stationary object. They consist of daily practice of exercises such as shown above, with many variants described below.

Why exercise ?

Common sense says that it is a good idea to learn to adapt to conditions that you can't fix.

There is evidence that they help people overcome chronic dizziness. Studies have particularly shown that it is helpful in bilateral vestibular loss (Herdman et al, 2007), and it is our opinion that gaze stabilization is clearly indicated in bilateral loss. Not all agree though -- in a blinded study, strengthening exercises worked as well as more specific exercises (Krebs, 1991). See the main VRT page for a more general discussion of how these exercises work.

Who should do these exercises ?

Indications for gaze stabilization:

• Gaze stabilization exercises are a reasonable procedure for persons with unilateral vestibular disturbances such as vestibular neuritis or persons who have had tumors of the 8th nerve removed.
• They are also use for bilateral vestibular loss.
• Central vestibular disorders

Conditions in which indications for gaze stabilization exercises are tenuous:

• Usually gaze-stabilization exercises will not be helpful for persons with positional vertigo.
• Gaze stabilization is usually not tolerated by persons with cervical vertigo.
• Intermittent vestibular problems that return to normal such as
  • Migraine associated vertigo
  • Meniere's disease (some types)
• Nonvestibular problems -- i.e. blood pressure fluctuations, medication induced dizziness

Procedures of Gaze Stabilization Exercises:

Begin with simpler exercises, progress to harder ones. So what does it mean harder ?

These exercises as incorporate many "dimensions" -- protocol, speed/frequency, target distance (near/far), background, orientation of head on trunk, and orientation of head with respect to gravity. Of course, this defines a gigantic multidimensional treatment space.

The goal is to find the relevant areas in this space which are not working well and practice them. A vestibular physical therapist can be very helpful in selecting the appropriate variation.

These exercises are not "done" just at the (weekly) PT session - - you do them EVERY DAY. We usually recommend doing them for at least 30 minutes (which may be split over several sessions). The duration needs to be carefully adjusted so that it is enough to make a person "dizzy", but not enough to make them "sick".

Exercise dimensions -- how exercises are made more complex and difficult:

1. Protocol of head movement
   1. Head turn with pause (head thrusts, may be very fast)
   2. Head turn back and forth continuously without pause (sinusoidal, generally slow and medium only)
   3. Occasionally, one adds in linear movement (these are angular movements) such as sitting on a "bouncy ball". These types of movements are sometimes important to driving.
2. Speed of head movement -- you want to practice all of these --no just the fast one.
   1. Slow
   2. Medium
   3. Fast (also called a head thrust)
3. Target distance while moving head --this is to change demands for otolithic participation
   1. Near (1 foot)
   2. Far (3 feet or greater)
4. Background while moving head -- this is to practice multisensory integration. Very important.
   1. Eyes closed (this is for practice of mental imagery)
   2. blank background
   3. busy background (i.e. checkerboard)
   4. Very busy background (i.e. grocery store)
   5. Very busy moving background (i.e. crowds, windy outdoors, watching waves come in)
   6. Misleading background (i.e. rotating visual surround, twisting golf umbrella, walking against a crowd moving the other direction, x2 exercises - -where head and target move in different directions)
5. Head position on trunk -- this is to avoid training for a single context. This may not be the most important dimension unless you spend a lot of time with your head off-center.
   1. Middle
   2. Left and right
   3. Up and down
   4. Roll (movement of head around front-back axis)
6. Head position with respect to gravity -- to avoid training for a single context. This is not the most important dimension unless you need to have good balance in odd positions.
   1. Upright
   2. Supine
   3. Prone
7. Other things going on that require mental processing by themselves. This is where things can get really hard, when combined with some of the other activities above.
   1. Movement such as walking -- outdoors is best, but a treadmill is another possibility.
   2. Thinking/talking on your cell phone/driving

Measuring outcome.

Visual acuity while active and subjective symptoms are the main measures here.