I get that too, very very occasionally. Usually around my mother. Correlation or causation? Don't know.
I tell myself to relax, and do a little bit of progressive muscle relaxation, and I very gently massage the twitching muscle, (it's more the body-heat from my finger-tip, really, I don't like actually poking at my eyeball) and it usually goes away fairly quickly. Correlation or causation? Don't know.