Hi ~ I worked in the "eye" business for many years as an ophthalmic assistant, and I never heard of putting needles in the eyes!

I'm sure things have changed a LITTLE -- but I still don't think they put needles in the eyes.
They use drops to dilate the eyes so the doctor can better see into the eye. That can make your vision blurry for a time after testing. It's nothing serious but it's blurrier than it was when you came in. It corrects itself after awhile.
Other testing includes optical pressure, visual fields, visual acuity, photos taken of the inside of the eye, keratometry which measures the curvature of the eye, and of course the doctor checks your prescription. There could be a couple of other tests that I've forgotten, but they are nothing to worry about.
But honestly, I have NEVER heard of putting needles into the muscles of the eyes. If it's something new, then I apologize -- I'd certainly tell you if I knew. But it just doesn't make sense to me.
I wish you the very best. Please let us know how you come out, will you? God bless and please take care. Hugs, Lee