on high dose prednisone that came back negative , and the 2nd blood test 7 days later came out ok then had it determined you didn't even though you still were getting headaches but not as frequent or severe ? Now on lower dose and will be off prednisone by Wed . I had blurred vision after my first migraine and was sent to eye dr who tested me and said my stigmatism was so bad I was legally blind and got glasses . I also have vertigo . I just hope it wasn't dismissed too soon . Also dr is trying to set me up with neurologist .