Contact Lens For Bifocal

contact lens
A contact lens (also known simply as a contact) is a corrective, cosmetic, or therapeutic lens usually placed on the cornea of the eye.
contact: a thin curved glass or plastic lens designed to fit over the cornea in order to correct vision or to deliver medication
A thin plastic lens placed directly on the surface of the eye to correct visual defects
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

bifocal
(bifocals) eyeglasses having two focal lengths, one for near vision and the other for far vision
(usually of a pair of eyeglasses) Having lenses each with two parts with different focal lengths, one for distant vision and one for near vision
Bifocals are eyeglasses with two distinct optical powers. Bifocals are most commonly prescribed to people with presbyopia who also require a correction for myopia, hyperopia, and/or astigmatism.
having two foci; "bifocal eyeglasses"