According to what you have said, it is ocular muscle convulsion, namely eye twitching. The common reasons of it are overuse of the eyes, eye fatigue, excessive tension of your mind, such as manipulating computer too long time or suffering great pressure before an examination. In addition, incorrect optic refraction, myopia, long sight or astigmatism can also cause eye twitching. Through relieving the pressure and taking a good rest, it can recover.
Well, for your situation, I have to say that you may get eye infection. As we know that an eye infection can develop through viruses and bacteria. Of course, an eye infection can be caused by fungi. So if there are some bacteria in your surrounding, it can make you have eye infection. That is to say, some irritants invaded in your eyes, and then react on your out layer of your eyes, making you feel itchy. So you should be careful about it. And if you do have this symptom, the first thing you can do is to drop some eye drops in your eyes, and then you can just take some measures to find out the direct infection cause. So you can figure out the problem. Besides, itchy eyes can be the start of some other eye diseases, so going to have an eye exam will be considerable.
There must be some inflammation for your eyes. It is the invisible bacterium that causes your eyes to keep twitching. And you should have a good rest for the eyes and not sit in front of computers for a long time. Then keep on using the eye drops with anti-inflammation function which will help you stop the eye twitching.