A series of contact lenses, each lens in the series having a targeted optical power within the range of -15 diopters to 10 diopters for correcting myopia or hypermetropia, the series including a first sub-series of lenses having a targeted optical power of from 0 to 10 diopters, a second sub-series of lenses having a targeted optical power of from -1 to -6 diopters, and a third sub-series of lenses having a targeted optical power of from -6 to -15 diopters, each lens in the series comprising an anterior surface having a first central optical zone and an opposite posterior surface having a second central optical zone, wherein the second central optical zones of all the lenses in the series are substantially identical to each other and are aspherical surfaces, wherein the first central optical zone of each lens in the series has an aspherical design that, in combination with the second central optical zone, provides an optical power profile which (a) in the case of a targeted optical power of from 0 to 10 diopters is a substantially constant optical power profile, (b) in the case of a targeted optical power of from -1 to -6 diopters is a power profile mimicking the optical power profile of a spherical lens with an identical targeted optical power, and (c) in the case of a targeted optical power of from -6 to -15 diopters is a power profile in which lens spherical aberration at 6 mm diameter is from about 0.65 diopters to about 1.8 diopters more negative than spherical aberration at 4 mm diameter, wherein the second central optical zone of the posterior surface is a conic surface defined by equation S 1 = c 1 ⁢ x 2 1 + 1 - 1 + k 1 ⁢ c 1 2 ⁢ x 2 in which S 1 is the saggital height, c 1 is the apical curvature (the reciprocal of the apical radius), x is the radial distance from the apex, and k 1 is a conic constant, and wherein the first central optical zone of the anterior surface is a surface defined by equation S 2 = c 2 ⁢ x 2 1 + 1 - 1 + k 2 ⁢ c 2 2 ⁢ x 2 + α 1 ⁢ x 2 + α 2 ⁢ x 4 + α 3 ⁢ x 6 + α 4 ⁢ x 8 + α 5 ⁢ x 10 + α 6 ⁢ x 12 + α 7 ⁢ x 14 in which S 2 is the saggital height, c 2 is the apical curvature (the reciprocal of the apical radius), x is the radial distance from the apex, k 2 is a conic constant, and α 1 to α 7 are the coefficients. (a) in the case of a targeted optical power of from 0 to 10 diopters is a substantially constant optical power profile, (b) in the case of a targeted optical power of from -1 to -6 diopters is a power profile mimicking the optical power profile of a spherical lens with an identical targeted optical power, and (c) in the case of a targeted optical power of from -6 to -15 diopters is a power profile in which lens spherical aberration at 6 mm diameter is from about 0.65 diopters to about 1.8 diopters more negative than spherical aberration at 4 mm diameter, wherein the second central optical zone of the posterior surface is a conic surface defined by equation S 1 = c 1 ⁢ x 2 1 + 1 - 1 + k 1 ⁢ c 1 2 ⁢ x 2 in which S 1 is the saggital height, c 1 is the apical curvature (the reciprocal of the apical radius), x is the radial distance from the apex, and k 1 is a conic constant, and wherein the first central optical zone of the anterior surface is a surface defined by equation S 2 = c 2 ⁢ x 2 1 + 1 - 1 + k 2 ⁢ c 2 2 ⁢ x 2 + α 1 ⁢ x 2 + α 2 ⁢ x 4 + α 3 ⁢ x 6 + α 4 ⁢ x 8 + α 5 ⁢ x 10 + α 6 ⁢ x 12 + α 7 ⁢ x 14 in which S 2 is the saggital height, c 2 is the apical curvature (the reciprocal of the apical radius), x is the radial distance from the apex, k 2 is a conic constant, and α 1 to α 7 are the coefficients.