It is a little bit hard to get lenses out of your metal frames than plastic frames. Because you may break your frame easily. First of all, you need to prepare a tiny screwdriver. But before you take a move, you need to place your glasses in warm water which can be good for the lenses slightly getting away from the frame. Then you can take your glasses out in about 10 min. Next is the most important, slowly and carefully, you remove the screws from the metal. It may sound easy but really very difficult to do it. Anyway, good luck to you!