Alphaa Vision Therapy

What is Functional Vision?

Functional vision is how your entire visual system -- the eyes, the brain, the visual pathways -- work together to help you interact with your environment. Functional vision includes the following visual skill areas:

Eye Teaming: Occurs when the eyes align to focus on the same point on an object and work together in a coordinated and precise way. Good eye teaming allows efficient, single, comfortable vision and depth perception. If the two eyes are not both aligned at the same point, the brain won’t be able to correctly combine the image from each eye. When this happens, a person will experience double vision and lose 3D depth perception. Poor eye teaming may also lead to eyestrain and fatigue.

Eye Focusing: This encompasses your ability to see an object clearly, and your ability to shift focus between objects at different distances. For example, a person may have difficulty keeping reading material in focus and may experience intermittent or constant blur. Or a student may be able to see the text in a book clearly but have difficulty shifting focus from the book to the board and back.
Eye Movement: This includes your eyes’ ability to maintain fixation on a moving object through space, move fixation from one object to another, or sustain fixation on a stationary object. Following a fly ball into your glove and moving your eyes across this line of text both require accurate and efficient eye movements. Maintaining eye contact when listening is an example of sustaining fixation on a stationary object.

What is included in a Functional Vision Exam?

A Functional Vision Exam generally takes 60 – 90 minutes and includes a series of tests based on the patient’s individual needs. The developmental optometris will first review the patient’s health and eye history, with emphasis on any visual problems and symptoms. This information is used to tailor the Functional Vision Exam, which includes tests on a wide range of visual skills.

These tests are for the typical learning-related vision problems. Different tests may be required for other types of patients (developmental delay, brain injury, sports vision).

The Functional Vision Exam includes

The Pre-Test Assessment
The Examination Assessment
The End Visit

In some cases, an additional Perceptual Test may be required. Prices and descriptions of vision tests are included below.

Pre-Test Assessment and Examination Assessment

Pre-Test Assessment

Examination Assessment

Visual Acuity
Pursuits (ability to track a moving target) and Saccades (ability to switch fixation between two targets)
Ability to converge the eyes
Alignment of the eyes at distance and near
Visual Field
Refractive Condition
Ability to converge and diverge the eyes when looking at a distance target
Ability to converge and diverge the eyes when looking at a near target
Magnitude of focusing ability
Flexibility of focusing ability
Function in near tasks with various performance lenses
Pupillary reflexes
Internal and external ocular health

Perceptual Testing Assessment, if required

Presence or absence of primitive reflexes
Bilateral integration
Laterality
Directionality
Visual perceptual attention
Perceptual speed
Visual Memory
Visual Motor Integration and Organization
Auditory attention
Auditory visual integration
Auditory Discrimination

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