Congratulations, HappilyMom! It sounds like the new optometrist is putting you in touch with resources and helping prioritize therapies, and that you trust her and she works well with your son. Glad you sought a new specialist!
I would want to do a baseline study of his vision in the fall, immediately before starting the vision therapy, and then testing later to see how effective it was. Who knows if the data points may change as your son going through various other therapies first (and as he gets older).
Susan Barry's Fixing My Gaze is a book-length exploration of how she sees and how vision therapy changed her life. Her case was first highlighted by Oliver Sacks in an article in the New Yorker, and then she was "Stereo Sue" in his riveting book, The Mind's Eye. So if you want a shorter "homework assignment," you could check out Sack's article/chapter-length descriptions--so riveting you'll probably want to read Barry's book anyhow:) Oliver Sacks' work helped me believe this vision therapy could be effective.
Good luck unpeeling the onion.
