Patent ID: 7434930

Claim:
A contact lens having a top, a bottom, a rotational axis, a front surface and a base surface, the front surface including a plurality of zones, comprising: an optical zone having a lower edge, including: a distance vision zone having a curvature range that provides distance vision correction and having a first area that is sufficient to overlay a substantial portion of a pupil of a user and disposed in a first position within the optical zone so that the user's pupil is substantially subtended by the distance vision zone when the user is gazing at a substantially horizontal point in primary gaze; a near vision zone, extending radially outward from the distance vision zone, having a second curvature range that provides near vision correction and having a second area that is sufficient to overlay a substantial portion of a pupil of a user and disposed in a second position within the optical zone so that the user's pupil is substantially subtended by the near vision zone when the user is gazing at a near vision point below the substantially horizontal point in down-gaze; and a ledge zone disposed below the optical zone, that includes an undercut portion extending outwardly from the base surface to the front surface to enable engagement with a lower eyelid of a user and thereby provide vertical translation support for the contact lens when being worn by the user.