cortical visual impairment
A form of visual impairment caused by damage to the visual cortex or visual pathways in the brain, despite normal eye structure.
Full Definition
Cortical visual impairment (CVI) is the leading cause of visual impairment in children in developed countries, resulting from damage to the posterior visual pathways or visual cortex. Unlike ocular blindness, the eyes themselves are structurally normal, but the brain cannot properly interpret visual information. CVI often presents with characteristic behaviors including light gazing, difficulty with visual attention, preference for familiar objects, and better vision with movement. The condition frequently occurs alongside other neurological impairments and may improve over time with appropriate intervention. Assessment requires specialized evaluation by professionals familiar with CVI characteristics.
Usage
Usage note: Use 'cortical visual impairment' rather than 'cortical blindness' to reflect the spectrum of visual function.
In Context
- "Assessment findings are consistent with cortical visual impairment secondary to perinatal hypoxic injury." — Ophthalmology consultation note
- "The child exhibits classic signs of cortical visual impairment including light gazing and visual latency." — Educational vision assessment