Thankyou ! That helps alot. I had an Evoked Potential test which I presume was ok. Other than that I have just been to an Optometrist. Would it have been an Ophthalmologist to have performed that? I have not been to a Rheumatologist, I will look into this. I live rural Australia, we have a shortage of specialist care out here, hense also why I am worried about my neurologist being up to scratch.
Thanks again to everyone for the information, it really helps.