Had an eye exam a year or so ago and doc said I basically had 20/20. Yesterday or today I realized I can't read the computer screen with my left eye. If I cover my left eye, just 2 feet from the monitor, right eye is totally clear. If I cover my right eye, everything is a blurry mess, with a ghost image a bit up and to the right. Looking at paper is not as bad as a computer monitor, but it's definitely not as bright and is blurry at only a few feet while 100% crystal clear in my right eye. I'm not sure how long it's been like this, but I think I would have noticed if it was more than a few days. What could cause this? *out of the country and won't be back for a week, so while I can get to a doctor or hospital, I'd rather not bother until I'm back unless somebody thinks it could require immediate attention.