What is proprioception dysfunction syndrome? what kind of specialist can diagnose and treat pds? will prism lens alone fix the problems? how long does it take to see symptom improvement? any other differential diagnoses to consider and exclude?

I think you are more likely to get better information for you if you tell your symptoms rather than diagnosis of proprioception dysfunction syndrome. You know it has not just to do with eyes and more to do with nerve information and it could be caused by different things; including vitamin B 12 deficiency may affect proprioception. It is an affliction that may require multimodal management.