As an artist and art teacher, I can only imagine how frustrating the visual difficulties must be.

I'm in month 7 now of PCS, and I was diagnosed with convergence insufficiency 3 months ago.

As the posters have said, you will need to see a neuro-opthalmologist or binocular vision clinic. I live in Berkeley, Ca and University of California-Berkeley has a wonderful clinic. Perhaps a nearby university with an opthalmology department can help.

The prism glasses are wonderful and vision therapy less so. I still have problems with processing and memory when reading, as well as balance/inner ear issues, so perhaps it is just more time.

A lot of the art techniques you mention require coordinating visual information and physical movement which may be very taxing on the brain. As well as all those kids!