On vacation last week, my previous pair of Oakleys decided to fall off my head when I fell off a paddleboard and sank somewhere in the ocean. So, I used it as an excuse to get a new pair, and picked up a pair of Fast Jackets. These were the only pair in the store, so they were in the display case. They look perfect, though. Later, I noticed that both sets of lenses have these "marks" or "lines" in the corner. Is this normal from inserting them in the frame? Does it matter, or should I see about getting the lenses exchanged? Thanks for your input and any help!