The lenses on my Oakleys were scratched and I was about to buy a new pair when I saw them on Ebay. I took a set of black lenses and replaced the old lenses. Excellent interchangeable lenses that fit perfectly in the frame.
Pros
Ideal
Cons
They only lasted 2 months until the coating wore off..... there were stains on the lenses. Only original Oakley cleaning cloths were used.