Water content is one of the most important parameters when choosing quality contact lens. Water content also is an important factor of the various plastics which are used to make soft contact lenses. In the cases of conventional soft contact lenses, higher water content of a contact lenses can let more oxygen pass through the lens to the surface of the eye. So this is important for lens comfort and healthy eyes.
Rigid Gas Permeable (RGP) lenses have been in market since 1960’s. The latest RGP contact lenses has the best advantages as it allows more oxygen to pass through our eye. They are often referred to as oxygen permeable lenses and are available in daily wear and extended wear options.