I went to the hospital with a migraine and was givien compazine for it. I had a very bad reaction to it and went back to the ER. They gave me benztropine and benedryll to help the adverse reaction to the compazine. It has been 3 days since i have taken any of those three medicines and i still have blurred vision and dilated pupils. I was wondering if anyone has had the blurry vision like this and how long the blurry vision could go on for?