From the outside, it's barely noticeable, but there are fine cracks throughout the inner lens (coating?). The appearance is cool, so how about using it as protective eyewear for work? It's still usable, at least. OAKLEY Oakley OO9245-6154 Sunglasses FROGSKINS Frogskins 009245-6154 ASIAN FIT Matte Black/Prizm Sapphire Iridium Lens Color: Blue Frame Color: Black