Another vote for having her seen by a physician, not an optician. Even if you meant she was seen by an optometrist, who can rule out certain things, I think an ophthalmologist (who is the only one who is an MD) would be absolutely indicated. I'd ask the pediatrician to cut through some red tape for you at a children's hospital, or at least get you to a qualified ophthalmologist in an office setting who can then, as needed get her in for any tests.
You could also get in to see a therapist who specializes in children to help deal with her fears. That might help you get through any medical visits in your immediate future, but also address whether this is an anxiety type of reaction vs. a true visual impairment.
I'd also ask someone from the school (such as a school psychologist) to sit in on part of her school day to see if certain types of activities trigger her fears or if it's more generalized. I'd want to know if anything distracts her from it - which would imply it's not there all the time.
All of this info should be documented with dates, amount of time she's observed, and notes by the professionals so it can all be shared at appointments (what tests were run, what ruled out, what the behavior patterns were, etc.). Get yourself a good 3-ring binder and a 3 hole punch and carry the info with you from professional to professional.
