Last Thursday I woke up and had problems seeing correctly out of my left eye with my contact. I replaced it thinking that maybe I had a bad one, but no change. I went to the eye Dr. that afternoon and found out that literally overnight my prescription had changed on that eye from -2.5 to -3.75. through some research I found that this could be caused by a mini stroke which can happen during sleep without me knowing. I go back to the eye Dr. today for a followup, I'm not running in the mean time because I'm a bit weary of what's going on. Anyone heard of this happening? Possible causes? Wish me luck!