Gas Permeable Contacts
Gas permeable lenses are rigid contact lenses, but are porous and allow oxygen to pass through them. As they are permeable to oxygen, GP lenses can be fit closer to the eye, making them more comfortable than conventional hard lenses. A significant advantage GP contacts have over soft or silicone hydrogel lenses are sharper optics due to rigid nature of the lens material.Gas permeable contact lenses are more resistant to lens deposits and don’t need to be discarded as frequently as soft lenses. Often, GP lenses can last a year or longer before they need to be replaced.