VisionLink – New learning through sight

Vision Link Behavioural Optometrists provide research based treatment for convergence insufficiency, oculomotor dysfunction, spelling and reading problems, dyslexia, attention deficit disorders, Aspergers, Learning Related Vision Disabilities, migraine and brain injuries. We are uniquely positioned to assist Visual Perception through the use of Vision Therapy, Irlen tinted lenses and Cellfield Intervention.

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Home > How We Help > Learning Related Problems > Cerebellar Disabilities; Dyspraxia & OculoMotor Dysfunctions

Learning Related Cerebellar Disabilities; Dyspraxia and OculoMotor Dysfunction

So where is your cerebellum?

It is located at the back of your brain and tucks neatly up under the visual cortex.

Why is it important to reading?

Its function is to organize/ smooth/ plan the movement of muscles, including the eye muscle movements. The eye muscles are very complex in their action, and very precisely controlled. The merest disorganization or imperfection in binocular eye muscle movement will break down the perception of single vision and the perception of the stability of print on the page.

What is Dyspraxia?

        Dys-                   means                 "it isn't working well"

               -praxia       means                                                       "controlled movement of motor muscles"

so,  Dyspraxia          means                 " it isn't working well for controlled movement of motor muscles "


Dyspraxia is the name given when there is a problem converting an intention of the brain into a carefully controlled action of our motor muscles.

Dyspraxia can be a developmental deficit or acquired through damage to the brain (ABI) by accident, stroke or illness.

Vision is the primary sense by which we know where our bodies are in relation to things around us. Vision requires delicately controlled action of the eye muscles (and the body as a whole) for us to be able to turn to see what is there to be seen. Hence the expression "Vision drives action"  - to see we must move.

Being able to move our muscles in a coordinated fluid action is the goal, and proprioceptive feed-back from our muscles is critical, it is rightly called "the 6th sense".As good as the proprioception is however, it does need frequent re-calibration so that we know exactly where our muscles have moved us to - it is Vision that keeps the precision up to date. The acuity of visual feedback is far more precise than proprioception, allowing the exact and delicately balanced movements of muscles critical to learning, the muscles of the eyes and the hands; just watch the intensity of gaze by a violinist upon their fingers - despite their years of practice!

When we talk of OculoMotor Dysfunction it could be equivalently expressed as Dyspraxia of Ocular Movement. Any errors in eye alignment when reading or driving a car will cause errors and inefficiencies, typically leading to fatigue and frustration.

Behavioural optometrists use the concept that "Vision drives action" to do Visual/Physical re-training with our Dyspraxic patients to give them better accuracy and efficiency in their movement.

For The Dyspraxia Support Group of New Zealand website Click here

What is OculoMotor Dysfunction?

This is a sensorimotor anomaly of the oculo-motor system characterised by the inability to
perform accurate, effective ocular saccadic and/or fixational eye movement patterns.

The effect of this disability is to make reading more difficult, but it is not the same thing as Dyslexia.
Treatment for this problem will improve reading performance.

The signs and symptoms associated with oculo-motor dysfunction may include, but are not limited
to, the following:

  1.  Difficulty visually tracking and/or following objects
  2.  Loss of place, repetition, and/or omission of words and/or lines of print while reading
  3.  The need to utilize a marker to avoid loss of place
  4.  Transposition when copying from one source document to another
  5.  Diminished accuracy
  6.  Inaccurate/inconsistent work product
  7.  Reduced efficiency and/or productivity
  8.  Inaccurate eye-hand coordination
  9.  Abnormal postural adaptation/abnormal working distance
10.  Spatial disorientation/dizziness/motion sickness
11.  Inconsistent visual attention/concentration or distractibility while during visually demanding tasks
12.  Difficulty sustaining near visual function
13.  General fatigue
14.  Poor coordination/clumsiness

Discuss with your child, or make observations about their behaviour based on this checklist, many parents are surprised by the results of just taking the time to really consider their childs Vision.

Now that we have defined the conditions, you can click through to treatment options for LRCD

Treatment;  Optometric Vision Therapy

Treatment;  Irlen Syndrome

Treatment;  Cellfield Intervention

Treatment;  PATH Therapy