Can Botox Caused a Crossed Eye, and if So How Can It Be Corrected?

I've heard only case reports of this problem, but if the Botox diffuses into the orbit and weakens one of the muscles which moves the eyes, it can cause "cross eye" problems.  People that have had childhood "lazy eye" will be at greater risk for this.  It will reverse, but it won't be pleasant for the time it takes to wear off.  You might need to wear a patch to avoid seeing double.  One of the earliest FDA approvals for Botox was to fix strabismus, which is lazy eye.  You would inject the stronger eye muscle to weaken it and make it equal strength to the opposing muscle.  

You received a very small amount of botox above your eyebrow. So movement of that small volume of Botox all of the way to the lateral rectus muscle would be very unlikely. In addition, the effect shouldn't not have been so immediate, Botox would have taken at least a few days to cause muscle dysfunction. I would pursue a complete ophthalmic evaluation.