My eyelids twitch when I am over tired, or stressed. The best thing for me to do is go to bed. If I can't do that, I just have to suffer. Sorry, no advice. Hope it goes away soon.
Actually, I read somewhere a long time agon that the twitch is caused by stress. It used to happen to me all the time, especially in my right eye. No one could see it, but I could feel it. I quit my stressful job and went back to school. The twitch went away.
I don't know what controls the muscle though, sorry.
For me it is stress. It is mostly on my right eye, but happens on my left eye too. I have been told that lack of sleep and caffeine can do it too. Truthfully I have dealt with it most of the time for the last year or so. I know I ought to quit my job and find a less stressful one but.... well, the eye twitch I can live with