Patent ID: 8857982

Claim:
A rigid gas permeable progressive corneal-scleral contact lens for use on an eye, the eye comprising a cornea, a limbus, and a sclera, the rigid gas permeable progressive corneal-scleral lens comprising: a daily use rigid gas permeable continuously progressive corneal-scleral contact lens having sufficient lens diameter to cover the cornea and a portion of the sclera of an eye while bridging the limbus of the eye, the posterior surface of the rigid gas permeable continuously progressive corneal-scleral lens being in significant contact with the central portion of the cornea and a portion of the rigid gas permeable continuously progressive corneal-scleral lens in contact with a portion of the sclera providing a distributed bearing area for the lens; an anterior surface of the rigid gas permeable continuously progressive corneal-scleral lens having a continuously progressive multifocal segment being an aspheric central zone providing continuously progressive near and intermediate vision correction to the eye; and a spherical portion of the rigid gas permeable continuously progressive corneal-scleral lens to provide distance vision, adjacent the aspherical central zone of the rigid gas permeable continuously progressive corneal-scleral, and; the rigid gas permeable continuously progressive corneal-scleral lens provides a center aspheric addition to produce a true continuously progressive rigid gas permeable contact lens that gives continuous vision correction between near, intermediate, and distance vision zones of the eye.