Is the omen of left canthus beating good or bad?

Jumping from left eye to right eye is for money, which is a feudal superstition. In medicine, eyelid jump is called eyelid spasm, and both upper eyelid and lower eyelid may appear. Eye muscle spasm is caused by nerve innervation, mainly caused by the area dominated by facial nerve. Poor rest, fatigue and other reasons are divided into primary and secondary. Primary blepharospasm is sometimes undetectable. Facial nerve spasm is caused by muscle spasm outside the eyes and forehead, which is related to nerves.