dude - go see a doctor stat! I have been on the computer for years pretty much and my vision has never (yet) gone double - on its own. I do have a strange habit of reading something (text, a sign, etc) and intentionally blurring the image and bringing the image back to center at will. Like I'll be skimming a newspaper and I'll voluntarily doubl-fy the picture/headline just for my own amusement. If this is hapening to you on its own then there is no time to wait. Sorry to sound all mega serious but vision and central nervous system stuff go hand in hand. Good luck to you and hope you get this resolved.