Spontaneous tearing from eyes indicates eye dryness, as our brain has sent a signal for tearing to compensate eye dryness. Therefore, the watery eye needs to treat immediately otherwise you will suffer from eye dryness. Some lifestyle factors trigger eye dryness like watching television, working on the computer, incorrect reading posture for prolonged periods, etc. During this time, we do not blink for a long period which causes evaporation of eye water and cornea becomes dry. Even air exposure can also dry up the eye. But eye dryness is treatable and different eye drop formulations are available to treat the condition.