Last year my eye started having this weird twitch. It's not an eyelid twitch, it's more of an eyeball twitch, with slight visual distortion. It usually happens when I'm staring, whether it's an intent stare or a blank stare. It's just my right eye. It is entirely involuntary, I don't know when it's going to happen, and I can't stop it when it happens. It doesn't hurt, but I don't know if the feeling I associate with it is real or psychosomatic. There is no loss of vision, just a little distortion like I'm trying to cross my eyes but not extreme.

I've done lots of Google searches and I can't find anything that describes what's happening, much less what might be causing it. I've looked up potential causes including cancer and it doesn't match up.

It started after I started college and all but abandoned paleo eating after a fairly steady 2 years of eating paleo. It did not happen before I started eating paleo.

Does anybody else have any idea what I'm talking about? What it is? What might be causing it? Should I be worried?