Rigid Gas Permeable (RGP) lenses are a type of contact lens made from durable plastic that allows oxygen to pass through to the cornea. Unlike soft lenses, RGP lenses maintain their shape on the eye, providing clear vision and correcting various refractive errors. They are often recommended for individuals with specific vision needs, such as those with astigmatism or keratoconus. These lenses are known for their longevity and can be more cost-effective over time compared to soft lenses. RGP lenses require a period of adjustment, but many users appreciate their comfort and the sharp vision they provide once accustomed to wearing them.