Well, in my opinion, it will just take a few days to heal your itchy eyes. Generally speaking, when you have itchy eyes, it is possible that you have got the eye infection. As we know that eye infection is caused by bacteria, viruses or environmental agents, such as pollens and other irritants. We can say that irritants lead to eye infection. In many cases, when eye infection occurs, it can make your eyes feel itchy, red, burred, and painful. 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. Sometimes, just going to have an eye exam will be considerable. Anyway, just be careful about it.