A method for producing a full range of multifocal contact lenses capable of providing correction for -12.00 to +12.00 diopters of distance correction and -3.00 to +3.00 diopters of near vision correction, the method comprising the step of providing a range of stock-keeping units for producing that full range of multifocal contact lenses, wherein the entire range of stock-keeping units comprises two or three aspheric, rotationally symmetric base curves as back surfaces, wherein each of the base curves is a function of refractive error, wherein either: a) the two base curves comprise: i) a first base curve having an apical curvature of about 7.8 +/- 0.2 mm and an asphericity constant of about -0.25 +/- 0.02, for lenses capable of providing correction for a sphere power of about -12 to about 0 diopters, and ii) a second base curve having an apical curvature of about 8.2 +/- 0.2 mm and an asphericity constant of about -0.10 +/- 0.02, for lenses capable of providing correction for a sphere power of about 0 to about +12 diopters; or b) the three base curves comprise: i) a first base curve having an apical curvature of about 7.8 +/- 0.2 mm and an asphericity constant of about -0.25 +/- 0.02, for lenses capable of providing correction for a sphere power of about -12 to about -2 diopters,, ii) a second base curve having an apical curvature of about 8.0 +/- 0.2 mm and an asphericity constant of about -0.17 +/- 0.02, for lenses capable of providing correction for a sphere power of about -2 to about +2 diopters and iii) a third base curve having an apical curvature of about 8.2 +/- 0.2 mm and an asphericity constant of about -0.10 +/- 0.02, for lenses capable of providing correction for a sphere power of about +2 to about +12 diopters. a) the two base curves comprise: i) a first base curve having an apical curvature of about 7.8 +/- 0.2 mm and an asphericity constant of about -0.25 +/- 0.02, for lenses capable of providing correction for a sphere power of about -12 to about 0 diopters, and ii) a second base curve having an apical curvature of about 8.2 +/- 0.2 mm and an asphericity constant of about -0.10 +/- 0.02, for lenses capable of providing correction for a sphere power of about 0 to about +12 diopters; or i) a first base curve having an apical curvature of about 7.8 +/- 0.2 mm and an asphericity constant of about -0.25 +/- 0.02, for lenses capable of providing correction for a sphere power of about -12 to about 0 diopters, and ii) a second base curve having an apical curvature of about 8.2 +/- 0.2 mm and an asphericity constant of about -0.10 +/- 0.02, for lenses capable of providing correction for a sphere power of about 0 to about +12 diopters; or b) the three base curves comprise: i) a first base curve having an apical curvature of about 7.8 +/- 0.2 mm and an asphericity constant of about -0.25 +/- 0.02, for lenses capable of providing correction for a sphere power of about -12 to about -2 diopters,, ii) a second base curve having an apical curvature of about 8.0 +/- 0.2 mm and an asphericity constant of about -0.17 +/- 0.02, for lenses capable of providing correction for a sphere power of about -2 to about +2 diopters and iii) a third base curve having an apical curvature of about 8.2 +/- 0.2 mm and an asphericity constant of about -0.10 +/- 0.02, for lenses capable of providing correction for a sphere power of about +2 to about +12 diopters. i) a first base curve having an apical curvature of about 7.8 +/- 0.2 mm and an asphericity constant of about -0.25 +/- 0.02, for lenses capable of providing correction for a sphere power of about -12 to about -2 diopters,, ii) a second base curve having an apical curvature of about 8.0 +/- 0.2 mm and an asphericity constant of about -0.17 +/- 0.02, for lenses capable of providing correction for a sphere power of about -2 to about +2 diopters and iii) a third base curve having an apical curvature of about 8.2 +/- 0.2 mm and an asphericity constant of about -0.10 +/- 0.02, for lenses capable of providing correction for a sphere power of about +2 to about +12 diopters.