Cerebral Visual Impairment (commonly referred to as CVI) is a form of visual impairment caused by damage to part or parts of the brain involved in processing visual information from the eyes, along the visual pathways in the brain. Its severity will depend how much of the brain is affected. Much of the brain is linked with visual processing tasks, from accurate selection of objects and reach and grasp, coordinated movement and being able to give visual attention to more than one thing at once. Cerebral visual impairment is much more common than realised.
Some children may have poor vision due to eye problems as well as CVI, but in many cases the child's eyes may be classed as healthy.
CVI can also happen later in life due to illness or injury.
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