09/16/2026
Cerebral visual impairment (CVI, also called cortical visual impairment) is an umbrella term for many different individual brain-based impairments of vision (BBIVs). A person can be affected by one or more than one BBIV, from birth or acquired later in life. This image shows just a few examples.
We need to look beyond the label of CVI to understand which BBIVs, or combination of BBIVs, are contributing to a person’s visual difficulties. With this understanding, support can be much more specifically targeted to the individual.
We are mindful that, for many people, this information is not provided at the point of diagnosis, or where CVI may be suspected but not yet confirmed.
We are currently working on a short and simple illustrated guide to help people identify which BBIVs may be affecting them, or the person they support.