I started using H about 3 years ago. He first stopped about 1 year ago and has been using off and on again since then. Over the weekend he started using again for the first time in about 2 months and has noticed something strange. Whenever he gets high, his vision gets really bad. It is usually blurred and sometimes he has double vision. Closing one eye and squinting the other seems to help but this is very inconvenient. He doesn't remember this ever happening before. The dope that I got over the weekend is better then what he is used to, could this have something to do with it? I have glasses that he uses for far distances (usually for reading the blackboard at school), but they don't seem to help much.