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Older female holds a magnifier to a package. She is standing in front of another woman who is helping her with the magnifier.

Cortical Visual Impairment

What is CVI?

CVI happens when there is neurological damage that affects the visual parts of the brain. This can be caused by a stroke, decreased blood supply, decreased oxygenation, seizure, infection, head trauma and other neurologic disorders. Sight loss from CVI may be temporary or permanent.