Was this your first time smoking this strain? You described the vision part the way a person would get a head rush from standing up too quick. Did you actually get a headrush, or did you only experience the fuzzy vision and sweating?

Some strains are known to bring on ocular migraines, and not many people know about them. It's not painful like a normal migraine, but it interupts vision like you described and brings on the sweating. This tends to happen to me when I smoke indicas, which is normally why I stick to the sativas. I hate that vision crap, because then it creates a whole new anxiety for me.

Just something to consider, however what most people on here say about blood pressure, dehydration, etc. makes more sense.