Dear Donna
i am very glad you are feeling better. 
as to causality ... chicken/eggwise, if anything i'd tend flip it around.
it might be an isolated migraine-type symptom... even if your migs are mostly controlled, and even if you don't necessarily get blurred vision with your migraines, this could be a breakthrough type st. anyway you could do dual approach.
- ask your neuro/migraine specialist about the eye sx next time you see him/her. Posit chicken/egg questions:
A. Is this eye problem or is this head problem?
B. Which is likely to be cause of the other, if related?
- go ahead and have an eye exam. i would not ask the chicken egg question here. i'd just ask if there is any problem with the eye per se. Then, if the answer is yes, could it precipitate headaches of any type?
