Eye issues

Actualy I have two questions if I may.  Sometimes the top and bottom eyelid of my left eye feels as though it is twitching.  It does not shut but I can feel a twitch, like muscle spasms in my eye.  I notice it occurs when I am stressed or have been reading for a prolonged period (greater than 4 hours) of time.  Is there a medical term for this.  
The second question is sometimes out of the blue, it seems as though I can see a tear roll down the eyeball of the same eye.  Is there a medical term for that as well.  I am asking because I have an appointment with my opthamologist coming and I want to do some research before hand so that I can have a productive visit.  Thank you for your response.

[Ray T Oyakawa, MD]

First problem is due to stress.

Second problem may be due to an intraocular problem.  See the ophthalmologist.

Dr. O.

[achillea]

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.