Hmmm.
I have/had similar symptoms to this, especially where if I'm following a moving object with my eyes, or standing and look up or across.....other times there seems to be no apparent reason for it, but the 'wave' you described is exactly what I feel.......its like everything spins for a split second and then you refocus.
Its awful when you are starting work again!
My doctor diagnosed it as positional vertigo, however I've had it enough times when my position hasn't changed (ie driving), to make me doubt that diagnosis.....
I don't know, he's a damn good doctor, but then again, he isn't that familiar with PTSD either.......