Vision as part of the primary sensory system in the body also functions as the key to maintaining balance. There are about 2.2 billion people with visual impairment and approximately 50% of visually impaired youth have an increased risk of falling.

Effects of visual factors on balance function in young adults

The occurrence of when an individual's eyesight can't be corrected to a normal level permanently due to a functional limitation of the eyes.

University of Michigan - Ann Arbor

- Mobility impairments
- Visual impairments
- Hearing impairments

Categories of physical/sensory disabilities

* Out-dated langage: Dumb, Invalid 


* Respectful language: Blind/Visually Impaired, Person who is blind/visually impaired 

Appropriate Terms for Blind or Visually Impairment 

Studying hearing imparments and auditory disorders is useful to learn the function of each aspect of the auditory cortex and pathways

Hearing Impairments / Auditory Disorders

Visual Impairments

Mobility impairment refers to the inability of a person to use one or more of his/her extremities, or a lack of strength to walk, grasp, or lift objects. This type of disability includes upper or lower limb loss or disability, manual dexterity and disability in co-ordination with different organs of the body.

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