I had the same thing, but it turns out the twitch wasn't actually IN my eye. That was how I described it to the eye specialist though.

He explained that it is in the eyelid, and that more people with MS get it (then the general population), but others do as well. He said stress can exacerbate it.

I haven't had it in many months now (it comes and goes, usually for weeks at a time), but when I do get it, I put pressure on it for about 10 seconds to stop the immediate twitch. It will come back later, but I just do the same thing.

Cherie