Method for manufacturing an ophthalmic lens (11; 111) having a first optical face, a second optical face and a final outline for the ophthalmic lens (11; 111) to be mounted in a spectacle frame, the method comprising: - providing: a semi-finished lens comprising (a) a blank formed in a first material having a first hardness, the blank having an outline, a first face and a second face, the second face being configured to be surfaced so as to constitute a first optical face of the ophthalmic lens (11; 111), and (b) a top layer formed in a second material having a second hardness, the second hardness being greater than the first hardness, the top layer having an outline, a first face and a second face, the second face of the top layer being arranged on the first face of the blank, the outline of the top layer being equal to or included in the outline of the blank, and the outline of the top layer satisfying to a predetermined dimensional selection criterion involving the final outline of the ophthalmic lens (11; 111); and a first data support containing data representative of said final outline of said ophthalmic lens (11; 111) to be mounted in said spectacle frame; and a second data support containing data representative of a range of predetermined outlines; - surfacing the second face of the blank of the semi-finished lens so as to form the first optical face of the ophthalmic lens (11; 111); with the outline of the top layer of the semi-finished lens being the outline in said range for which the difference between the area of the surface delimited by the outline of the top layer and the area of the surface delimited by the final outline of the ophthalmic lens (11; 111) is minimized, said dimensional selection criterion of the outline of the top layer being the minimization of said difference. - providing: a semi-finished lens comprising (a) a blank formed in a first material having a first hardness, the blank having an outline, a first face and a second face, the second face being configured to be surfaced so as to constitute a first optical face of the ophthalmic lens (11; 111), and (b) a top layer formed in a second material having a second hardness, the second hardness being greater than the first hardness, the top layer having an outline, a first face and a second face, the second face of the top layer being arranged on the first face of the blank, the outline of the top layer being equal to or included in the outline of the blank, and the outline of the top layer satisfying to a predetermined dimensional selection criterion involving the final outline of the ophthalmic lens (11; 111); and a first data support containing data representative of said final outline of said ophthalmic lens (11; 111) to be mounted in said spectacle frame; and a second data support containing data representative of a range of predetermined outlines; a semi-finished lens comprising (a) a blank formed in a first material having a first hardness, the blank having an outline, a first face and a second face, the second face being configured to be surfaced so as to constitute a first optical face of the ophthalmic lens (11; 111), and (b) a top layer formed in a second material having a second hardness, the second hardness being greater than the first hardness, the top layer having an outline, a first face and a second face, the second face of the top layer being arranged on the first face of the blank, the outline of the top layer being equal to or included in the outline of the blank, and the outline of the top layer satisfying to a predetermined dimensional selection criterion involving the final outline of the ophthalmic lens (11; 111); and a first data support containing data representative of said final outline of said ophthalmic lens (11; 111) to be mounted in said spectacle frame; and a second data support containing data representative of a range of predetermined outlines; - surfacing the second face of the blank of the semi-finished lens so as to form the first optical face of the ophthalmic lens (11; 111);