DMac, you might want to google 'blepharospasm,' a term for eyelid twitches. As Dr. O says, they seem to be mostly related to stress, fatigue, etc., and are not significant unless they're of the type that actually causes your eye to snap shut against your will.
First problem is due to stress.
Second problem may be due to an intraocular problem. See the ophthalmologist.
Dr. O.