Iron helped clear up my vision to some extent. For a while it seemed to be getting worse, to the point where it looked like it was raining all around me. But I had a low blood count. If you haven't had your blood tested I wouldn't recommend taking iron supplements.
Iron deficiency is much more common in women than men.
I think my PCP mentioned Tegretol, but the neurologist never suggested it. I really wouldn't want to take this kind of drug without evidence that it would help. I noticed that when it wore off, the eye problem would temporarily worsen, so I do think there is a relationship. I took another drug for about ten days which is supposed to prevent migraines and seizures. That didn't help at all.