I have bought the oakley sunglasses which are not easily scratched. You should take care of using it. You should avoid touching the things with cusp. You need to put it the box when you don't use it to avoid the dirty dust. You could often clean it with clean cloth to make it look new. In addition, you could also use the professional liquid to wash the lenses of the sunglasses.
Well, generally speaking, Oakley sunglasses can be wonderful sunglasses which are wildly popular with many people. First, you should know that Oakley's technology is immense, especially the High Definition Optics (HDO) is unrivalled in their clarity. In common, by wearing them, your eyes won't shift as they readjust their focus as can happen with inferior lenses. And because they are well designed with some special material, it makes them not scratched easily. So you do not need to worry about it. But on the other hand, you also need to protect them carefully, or it can be damaged.