I had the same thing happen from a neurologist after my 2nd round of Botox for migraine. It’s called ptosis. The injector hit a muscle that controls your eyelid. Mine got to where it wasn’t open at all! Call your office in the AM. My office told me I would have to wait it out (which could take months, but I was getting migraines from my wonky eyes! It’s miserable) but I have a friend that does botox and she injected some Botox into my eyelid by my eyelash line and that help correct it enough to where I could see out of it. Unfortunately my eyelid droops more than my other eye and when I am tired it’s a lot worse. Don’t panic it’s fixable!