My vision is going

Each eye sees double. It created a heck of a problem when I was driving the other day, since I was essentially seeing 4 superimages. What's frustrating is that I want to know the physiology behind why this is happening, but that's a learning issue I don't want to get into right now.

Also, I put Radostit's Large Animal Medicine on my lap while reading an anatomy for horses book. And now my bones ache because Radostits is quite possibly the largest heaviest book I have ever owned. Note to self: Don't do this again.