Method implemented by computer means for calculating a lens optical system of a spectacle ophthalmic lens for a wearer

A method implemented by computer means for calculating a lens optical system of a spectacle ophthalmic lens for a wearer where the spectacle ophthalmic lens comprises a back surface and a front surface, the back surface being positioned closest to the wearer's eye when the spectacle ophthalmic lens is worn, wherein the method comprises the steps of:

• providing an aberration target lens fulfilling the requirements of:
• a first set of aberration data of the aberration target lens including at least an aberration datum at a point of said aberration target lens chosen within the list consisting of a power PPOATL, an astigmatism amplitude value ASTATL with an astigmatism axis AXEATL, and an addition AddATL,
• a first set of wearing parameters of the aberration target lens, and
• a first set of lens parameters of the aberration target lens;
• providing a distortion target consisting of target distortion values where the target distortion values are reduced or enhanced in at least a modified distortions zone when compared to the distortion values of the aberration target lens;
• and
• calculating the lens optical system by using an optimization method which jointly uses the aberration target lens and the target distortion values.