Cortical visual impairment (CVI) — a brain-based condition that disrupts how children process what they see — is the leading cause of childhood visual impairment in the US and other developed countries, yet it remains widely underdiagnosed. Unlike typical eye conditions, CVI often presents with a completely normal eye exam, leading pediatricians and ophthalmologists to miss it. Add in the fact that many affected children have other "front-burner" issues like difficulty walking or speaking, and vision problems frequently fall through the cracks.

The rise of advanced neonatal care is fueling more cases. Babies born as early as 23 weeks are now surviving regularly — but many carry complex neurological needs, including CVI. The condition is linked to hypoxic-ischemic encephalopathy, white matter damage, genetic disorders, and brain bleeds, all of which can disrupt visual processing pathways.

Key Takeaways:

• A normal eye exam does not rule out CVI — a functional vision assessment is essential for children with neurological histories
• CVI behaviors (light-gazing, preference for movement, visual latency, aversion to clutter) are often misattributed to ADHD, autism, or developmental delay
• Management focuses on environmental adaptations: reducing visual clutter, using vibrant colors, backlit screens, and movement cues
• Early intervention and school-based vision services can meaningfully improve functional vision outcomes

Why it matters: CVI affects every waking moment of a child's life — how they learn, socialize, and navigate the world safely. Identifying it early and tailoring supports accordingly can dramatically change a child's educational trajectory and quality of life.