I've been to an eye specialist who told me my optic nerves look to be in great shape, and that my eyes in general are in very good shape.

With that said, I have double vision off and on. It's worse some days, to the point of stumbling over things because of the blurriness, other days it's almost non-existent (I have to wear glasses for ranged vision, up close to read my monitor, books etc I don't need vision correction).

I get the double image ('ghosting') that folks have described in this thread - where you can see a shadow of the image behind and above (for me the ghosted image is off to the top right behind whatever I'm looking at). I also get the 'broken' images, where a black line is seemingly broken into pieces, pieces missing from the line. I generally have tremendous difficulties reading digitally displayed numbers/letters (like on my alarm clock, microwave).