* Contact lenses are spherical, rounded design typical of contact lenses, which can correct myopia (nearsightedness), hyperopia (farsightedness).
* Bifocal contact lenses contain different zones of near and distant vision to correct presbyopia.
* Orthokeratology lenses are specially designed to reshape the cornea during sleep, providing free lens daytime wear.
* Correct toric contact lenses for astigmatism, as well as for myopia and hyperopia.
All of these lenses can be custom made for the eyes of hard-to-fit. Many other additional lens designs are available. Normally are manufactured for use in special situations, how to correct for Keratoconus and less common.