Dear daddyzaring,
Eyelid spasms may be a spasm like any other muscle.
Dr. Feldman
Sandy T. Feldman, M.D., M.S.
ClearView Eye and Laser Medical Center
San Diego, California
I have similar and have had been told it could be due to stress. It is weird but it always seems to happen when I look in the mirror at my eye. Would also like to here a more professional answer. All the best