Early this morning I jumped up out of bed and drove home from a friends house while it was still dark outside. I noticed that there were large circles around the street lights. A few miles down the road my eyes played a trick on me and it seemed as though an oncoming vehicle was coming over into my lane when actually it wasn t. I had noticed the night before while watching a movie that my eyes hurt/felt very strained. Can you please tell me what may have caused this? I am very afraid to drive at night in fear that this may happen again.