Anonymous wrote an answer about Maui Jim Freight Trains Sunglasses - Polarized on September 19, 2011
What you are seeing isn't an imperfection, it is the point where the frame holds the lens securely in place. It is strictly cosmetic and will only be noticed if you take the glasses off and hold them up to an LCD screen. It does not impact the performance of the lens. The Evolution lens material in this frame actually has a very high level of clarity, especially when compared to polycarbonate.