I have pretty terrible eyesight; everything gets blurry after about six inches. I wear contact lenses most of the time, switching to glasses only to get from the bathroom to my bedroom (unless my contacts are really bugging me, which isn't often). I think mine are something like -8.00 and -7.50, or at least that's what the box says. Whatever it is, my optometrist said that right now he doesn't know if they can do laser eye surgery to "fix vision that poor". However, he thinks they will be able to by the time my eyes stop developing. Not sure how true that is, but either way I'm not to worried about it.