A method for producing a customized progressive ophthalmic lens intended for a wearer having a prescription for a wearer's eye corresponding to said lens, the method comprising the following steps: a) providing an initial progressive ophthalmic lens design having a meridian line; b) providing binocular convergence data for the wearer by measuring the convergence path of the wearer; and c) modifying the initial design so that the meridian line is laterally shifted in position with respect to said initial design, for matching the convergence data provided when calculating each convergence, for said prescription, using the modified design as resulting from modifying the initial distance design to manufacture the customized lens, wherein step b) comprises the following substeps: b1) providing a visual stimulus in a sagittal plane of the wearer; b2) setting the visual stimulus at a plurality of visual stimulus distances within the sagittal plane between a predetermined maximum distance (d max) and a predetermined minimum distance (d min); b3) determining, for each of a plurality of visual stimulus distances between the predetermined maximum and minimum distances (d max, d min), an azimuth angle (β conv) existing for an ocular axis of the wearer's eye when the wearer is looking at the visual stimulus located at said visual stimulus distance (d stim); and b4) calculating, for each azimuth angle (β conv) determined at step b3), a convergence distance (d conv), and an assignment of each convergence distance (d conv) to the corresponding visual stimulus distance (d stim) forms the convergence data (d conv (d stim)) used in step c), a) providing an initial progressive ophthalmic lens design having a meridian line; b) providing binocular convergence data for the wearer by measuring the convergence path of the wearer; and c) modifying the initial design so that the meridian line is laterally shifted in position with respect to said initial design, for matching the convergence data provided when calculating each convergence, for said prescription, using the modified design as resulting from modifying the initial distance design to manufacture the customized lens, wherein step b) comprises the following substeps: b1) providing a visual stimulus in a sagittal plane of the wearer; b2) setting the visual stimulus at a plurality of visual stimulus distances within the sagittal plane between a predetermined maximum distance (d max) and a predetermined minimum distance (d min); b3) determining, for each of a plurality of visual stimulus distances between the predetermined maximum and minimum distances (d max, d min), an azimuth angle (β conv) existing for an ocular axis of the wearer's eye when the wearer is looking at the visual stimulus located at said visual stimulus distance (d stim); and b4) calculating, for each azimuth angle (β conv) determined at step b3), a convergence distance (d conv), b1) providing a visual stimulus in a sagittal plane of the wearer; b2) setting the visual stimulus at a plurality of visual stimulus distances within the sagittal plane between a predetermined maximum distance (d max) and a predetermined minimum distance (d min); b3) determining, for each of a plurality of visual stimulus distances between the predetermined maximum and minimum distances (d max, d min), an azimuth angle (β conv) existing for an ocular axis of the wearer's eye when the wearer is looking at the visual stimulus located at said visual stimulus distance (d stim); and b4) calculating, for each azimuth angle (β conv) determined at step b3), a convergence distance (d conv), and an assignment of each convergence distance (d conv) to the corresponding visual stimulus distance (d stim) forms the convergence data (d conv (d stim)) used in step c),