A seven-year-old boy whose brain doesn’t have a visual processing centre has baffled doctors. Despite missing this brain area, he is still able to see
An Australian boy missing the visual processing centre of his brain has baffled doctors by seeming to have near-normal sight.
The 7-year-old, known as “BI”, lost his primary visual cortex shortly after he was born due to a rare metabolic disorder called medium-chain acyl-Co-A dehydrogenase deficiency.
Normally, the primary visual cortex is crucial for sight because it processes electrical signals relayed from the eyes. People with damage to this area are said to have “cortical blindness”.
However, BI has remarkably well-preserved vision, says Iñaki-Carril Mundiñano at Monash University in Melbourne, Australia. “You wouldn’t think he is blind,” he says. “He navigates his way around without any problems and plays soccer and video games,” he