Patent ID: 11415816

Abstract:
A contact lens (10) comprising an anterior surface (14), a posterior surface (16), a central zone (12) with a first radius of curvature, a first peripheral zone (10) extending radially from the central optical zone, the first peripheral zone (1) having an inner margin (1a) having a radius of curvature that is substantially identical to the first radius of curvature of the central zone (12) and an outer margin (1b), wherein the first peripheral zone (1) is spherical at the inner margin (1a) and is aspheric at the outer margin (1b) and there is a change in a sphericity across the first peripheral zone (1) from the inner margin (1a) to the outer margin (1b) and the contact lens (10) comprises at least one further peripheral zone (2,3,4,5) having a radius of curvature that is less the first radius of curvature.