The term CVI can be confusing. Traditionally, CVI stood for Cortical Visual impairment. This means that while the eyes may look healthy there is damage to the visual pathway which results in visual impairment.
In CVI, the ocular structures (i.e. the eye, and the optic nerve head) appear normal, but the damage lies in the pathway which normally sends the information collected by the eye to the visual cortex.
More recently, the term CVI has been used to stand for Cerebral Visual Impairment and is sometimes referred to as Perceptual Visual Dysfunction. This is a term which means that there is damage to the brain (but not necessarily the primary visual cortex) affecting how it processes the visual environment.
Below is a variety of information on how to assess CVI and strategies to aid in the child’s care.