Well, I will not suggest you do things by yourself. As we know that Oakley sunglasses are made of special materials and they have their own construction. If you are not a professional person who do job associated with sunglasses, it will be dangerous. In some cases, you will damage the sunglasses. And that will be a big problem for they are so expensive. Then, in my opinion, you'd better take them to the sunglasses store where they can give a good and professional service. In that way, you don't have to worry about it.