A year ago I had a dental injection on the upper left side of the mouth. As soon as the needle went in, my vision in my left eye went a little blurry. A month later it was still blurred, so i went back to dentist who said maybe the needle hit a nerve and that vision should come back within a few weeks. 3 months later, still no change so i went to see an eye specialist who had no idea what was wrong and said that the face has no nerves that could cause blurred vision if damaged by a dentist needle. A year has now gone by and i still haven't recovered. My left eye is still blurred and it really bothers me especially when it is sunny outside. Can this ever heal? Can a needle really hit a nerve that causes permanent blurred vision in one eye? Please help.