Not a Twitch---a Visual Shake.

This sounds like my problem, which has been getting worse over the last 9 months or so. My left eye seems entirely normal, but the vision in my right eye sometimes becomes tilted (about 25 degrees, maybe) and shakes -- almost as if the muscle is twitching from strain. The double vision is strange -- i'm seeing two horizon lines, one horizontal and the other a few centimeters higher and on a crazy incline. And my eye starts to hurt, and I sometimes get headaches.

My opthalmologist has tried eye drops and three different eyeglass prescriptions for me -- various combinations of magnification and prisms designed to lessen eyestrain and correct misaligned vision. Nothing has worked. In fact, it seems to be getting worse.

I'm a writer by trade, so this condition makes my life extremely difficult. Does anyone have any ideas?

Thanks!