postconcussion : You need go a Developmental Optometrist (google for it) to diagnose it. Well it is more than diagnosis and/or based on symptoms for me. From the beginning I know my vision is not the same and no regular optometrist/ophthalmologist can find this and many ophthalmologists/neuroophthalmologists don't believe in it. My insurance doesn't cover but some insurances started to cover part of it.

Even many Neurologists/specialists surprised when I mention about Vision therapy. They never heard of it expect few and I live in a huge city. One rehab director of a hospital is the one strongly believed I may have vision issues. I may have other issues too with neck and ear.

Not really sure what is causing what but I like to believe in vision since other tests didn't show anything. Also this training prism lenses should be used only for few mins/few times a day but I use it a lot because it sure helps. That may be a clue.

rick92 : I know not many wants to wear glasses but if it gives your life back why not? Try therapy first (about 6 months) and if didn't work try the prism lenses. These days frames are very fashionable and also you may not have to wear forever. Just for time being only. good luck with therapy and keep posting.