Well, generally speaking, you will feel uncomfortable when your channel sunglasses are too loose, and they often slid off from your eyes. At this moment, you should try some ways to tighten it. First, you should Put on your eyeglasses and, and look in the mirror. And then you just need identify precisely where the frame problems occur. Then the important step is coming. You should tighten the screws on your eyeglasses. Besides, for the sake of safety, just adjust the arms of the eyeglasses in a careful, slow way. Also, the tool such as a pair of needle-nose pliers is necessary. Finally, you can make a small, corrective bend in one arm at a time. Anyway, you can just have a try. But on the other hand, I will suggest you console it with a professional person.
