?specially designed for the best possible peripheral vision. the line miner m was created with the purpose of providing the ultimate in peripheral vision in a cylindrical-style design. oakley were able to pull the goggle in closer to your face than ever before, allowing for incredible downward and side-to-side periphery. thanks to its medium fit, the line miner m is suitable for a wide range of face shapes and pairs perfectly with most helmets.prizmâ„¢ sapphire iridium lensprizmâ„¢ lenses adapt to weather conditions and provides optimal colour representation while maximising depth perception and greatly improving visibility. the lenses are injection molded under extreme pressure with impact-resistant plutonite® to create a precise contour with optically correct geometry and clarity.