Gas Permeable lenses can transmit the oxygen through the lens to the conjunctiva and cornea. Gas permeable (GP) contact lenses offer more visual performance. Because they're durable, they can be an economical choice for vision correction. Gas Permeable contact lenses are easy to care for and are crafted from patented oxygen permeable material that allows your eyes to 'breathe'. GP contact lenses are also ideal for special eye needs as they are custom fit to the natural shape of the patients' eyes.