Cortical Vision Impairment

Is cortical vision impairment as common as the other visual problems associated with CdLS? My son has myopia, nystagmus and has had surgery to correct ptosis. He also has cortical vision impairment. He receives vision therapy once a week. I hadn't heard about this vision problem previously and am curious about its frequency. I am also interested to find out how many children visually improve as their developmental level improves.

SAC approved answer

Any child with developmental delay may have some element of cortical visual impairment. It simply means that the eyes are sending a perfect message to the brain, but the brain isn't "paying attention" visually due to suboptimal overall brain function. If the brain anatomy is normal (as revealed by a CT or MRI scan), then children may show increased visual attentiveness as they mature.

I believe there is a support group for children with CVI. Try searching the web.

AL /TK 7-13-10

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