My brother recently broke his prescription eyeglasses because of adjust his eyeglasses all by himself. As we all know some parts of our eyeglasses are quite vulnerable, they can be broken because of your improper behaviors. And some of our prescription eyeglasses are really very expensive. So I suggest you that go to your optometrist to adjust your eyeglasses when you feel uncomfortable when you’re wearing them, or you may break them some day, you know, buy a new one really cost you a lot.