Patent ID: 7537339

Claim:
A method of manufacturing hybrid contact lenses, comprising: forming a first hybrid contact lens comprising a first substantially rigid zone having a base curve including (i) a first spheric curve defined by a first apical radius extending from a first point and (ii) a first aspheric curve defined by a first conic constant, the first aspheric curve having a contour that deviates by a first amount from a sphere centered on said first point and having a radius equal to the first apical radius, the first hybrid contact lens further comprising a first substantially flexible portion coupled to the first substantially rigid zone at a junction; and forming a second hybrid contact lens comprising a second substantially rigid zone having a second base curve including (i) a second spheric curve defined by a second apical radius extending from a second point and (ii) a second aspheric curve defined by a second conic constant, the second aspheric curve having a contour that deviates by a second amount from a sphere centered on said second point and having a radius equal to the second apical radius, the second hybrid contact lens further comprising a second substantially flexible portion coupled to the second substantially rigid zone at a junction, wherein (a) the first amount and the second amount are substantially the same and (b) the first and second apical radii of said respective first and second hybrid contact lens rigid zones are different