I forgot to add in my long story that I was diagnosed with a convergence insufficiency several months ago and I did pencil push-ups to cure the CI. I returned to the binocular vision specialist's office (he's very well-known), and he told me I had cured the CI. I told him I was still having the problems, and he basically said he didn't know what to tell me.
So you know, I wake up with and go to sleep with the symptoms. This fact seemed to mystify the CI doc, as though it meant my problem was probably not eye-related. Of course, what else could it be related to?