Hi,
Welcome to ehealthforum,
The recovery depends on the type of nerve fibers affected due to the infarcts detected. Nerve cells are non-regenerable cells, and usually the damage done once can lead to permanent damage. You should consider taking further opinion regarding vision from Ophalmologist/retinal surgeon and for his co-ordination problem consult a Neurologist along with physiotherapist. Further evaluation is needed to know the current status of the problems he is facing along with knowing the progonosis. He should be in regular follow-up and monitoring.
Take care.