If your eye twitches uncontrollably, whether it is a left or a right eye, it is a sign of fatigue in the muscles. The eye muscles are very small and are the first to show signs of fatigue. The annoying twitch may also be caused by low calcium. It is called low calcium tetany. Try getting calcium right away (drink a glass of milk) and see if that does not help. Otherwise, take a nap.
It could be Morse code. Better write the blinks down in case "something" is trying to communicate with you. Try asking yes or no answers and see if the blinks respond.