In optometry, Rigid Gas Permeable (RGP) lenses are used primarily to correct complex vision refractive errors—such as severe astigmatism, high myopia, or irregular corneas caused by conditions like keratoconus—where standard soft contact lenses or eyeglasses fail to provide sharp visual acuity. In the business sector, RGP is used as a corporate acronym for professional consulting services that help enterprises navigate financial restructuring, regulatory compliance, and project management challenges.