Extended Wear Toric Contact Lenses

contact lenses
(contact lens) contact: a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication
(Contact lens) A small plastic disc containing an optical correction that is worn directly on the cornea as a substitute for eyeglasses.
(contact lens) A thin lens, made of flexible or rigid plastic, that is placed directly on to the eye to correct vision, used as an alternative to spectacles, or, if coloured, to change one's eye color cosmetically
A thin plastic lens placed directly on the surface of the eye to correct visual defects

extended wear
Currently, these contact lenses are FDA-approved to be worn without removal for up to seven days (or 30 days in the case of one brand), meaning some people will be comfortable sleeping with them in their eyes. Thirty-day contact lenses are sometimes referred to as "continuous wear."
Wearing a contact lens for any period that includes sleep, up to a maximum of seven days continuously.

toric
(of a contact lens) Having two different curves instead of one, used to correct both astigmatism and near- or farsightedness
Toric is a village in the municipality of Bileca, Bosnia and Herzegovina.
A lens design with two different optical powers at right angles to each other for the correction of astigmatism.
In optics, a toric lens is a type of lens whose surface is a combination of a sphere and a cylinder. One surface of the lens is spherical, the other toroidal. Such lenses are commonly used for vision correction, in cases where there is astigmatism.
Having the form of a torus or part of a torus