The eye twitching is also called myokymia, which the eyelid muscle would be twitched. It's usually harmless and goes away naturally. However, it would be a sign of serious eye disease. Hence, you should clear know the reason why the eye would be twitched to prevent further eye disease. Normally, it would be affected by the person's temper, like anxiety. It's common to see in children based on this reason. And the eye allergy is one of the most important reasons to cause it. Then, the eye strain, dry eye, exhaustion and stress would cause the eye twitching if you using your eyes for an excess long period without any break, or you don't take enough rest. On the other hand, the beverage, such as coffee, alcohol, is a common reason to cause eye twitching. And unbalance of nutrition in the diet is held as one of the causes for eye twitching.