I'd think the closer you are to the core diagnosis, the more accurate the therapy will be. At a symptom basis my DS could be diagnosed with dysgraphia and visual processing disorder, but it is more hand eye coordination delay because of his vision issue. Now that the vision and amblyopia is corrected we are anticipating the other aspects to catch up (though literal catching may be a ways off, if he ever learns to not flinch.)
So some visual work and hand-eye work is his current path. If we don't get progress then we'd seek a formal diagnosis to get accomodations and OT.
