When the muscles that surround your eyes twitch
and flutter, chances are very good that you are fatigued and stressed. So the remedy for a twitching eye is rest and relaxation.Some of the causes for it are:stress,lack of sleep,Corneal irritation
, Fatigue ,Prolonged staring or eye strain
,Alcohol ,Caffeine Neurological disorders .In your case i feel its due to eye strain.