A toric lens is a type of lens that is designed to correct astigmatism. There are several synonyms for the term 'toric lens' such as toroidal lens, cylindrical lens, and astigmatism-correcting lens. In addition, toric lenses can either be soft or rigid gas permeable (RGP) lenses. Soft toric lenses are made of flexible materials which can contour to the shape of the eye, while RGP lenses are more rigid and provide sharper vision. Other terms that can be associated with toric lenses are toric contact lenses, toric intraocular lenses (IOLs), and toric eyeglass lenses. All these synonyms indicate a lens that has the ability to correct astigmatism.