Lori - My son does visual therapy on a computer program at home every day for 20 minutes and then once a week for 30 to 45 minutes at the therapist's office. I found the doctor on this website
http://covd.org. You may have already gone through these kinds of hoops since your child has received some vision therapy but it doesn't sound like the same kind of thing my son does. I hope Dottie's information helps you get the accommodations your DS needs! :-)
Dottie - thanks for your encouragement. Maybe one day his abilities will be recognized, but you're right, when they get older it really isn't that important, just as long as they are getting appropriately challenging work. His teacher gets it at least and she is very supportive. Thanks!