Hi _attic_ and Welcome to NeuroTalk

I have found Functional Neurological Disorder (FND) quite interesting, you may not

If I am reading your post correctly your Neurologist determined you have FND without doing a MRI or other testing? If you are wanting to go through more testing such as a MRI (for peace of mind) talk to your PCP or contact the neuro's office and ask about a MRI or other testing. These tests may or may not show anything.

Any vision problem should be evaluated by a Optometrist or Opthamologist. The eyes are their specialty.

Information about FND:
http://www.neurosymptoms.org/