So DH talked yesterday to the vision therapist - it sounds like they are willing to start with a 12-week plan, if that's what we want. She explained a few more details:

'Over a period of weeks, we work on monocular motor skills (fixations, pursuits and saccades), eye teaming (convergence and divergence), accommodation (spatial awareness on the z axis for identification), and visual perception (visual thinking). We customize the program to identify and target the adaption’s and coping strategies each person uses to facilitate efficient visual processing. '

Another question - did any of you talk to your child's teachers about their vision issues? We just recently added accommodations for DCD to his IEP, but it seems to me like the vision issues better explain some of his difficulties. However the school year is almost over and I don't want to confuse everyone with yet another 'thing'...