Yeah, it is normal for your eyes to get blurry after taking the botox injection. It will last for about several days. If this symptom is not released after a week, you'd better go to see the doctor and have a full check on the eyes. Usually it will be ok.
Botox has been used to treat eye muscle problems and uncontrolled eyelid twitching, and blurred vision is one of the side effects of botox injection. And the side effects are double vision, blurred vision, etc. If you feel uncomfortable after an injection,you'd better report them to your eye doctor or your physician to decide if it needs a treatment, and if it's not serious, it takes a week for blurred vision to go away.