If any? Before I used Oakley glasses, I would fiddle with adjustable nosepads thinking a frame or something came out the box off center. The more "fixed"/non-adjustable setup of my Oakley pairs kinda boldfaced the point: it's not my glasses (2-for-2 on the same frame style at that), it's my face. Seems my nose is off to the left, or my ears line up funny to make it so. Nothing that bothers my self esteem, and sure as hell nothing to get surgery over (Is this why nose jobs supposedly are more common?). Just like, huh, I didn't realize that until then.