A method for creating shape data of a spectacle lens to be fitted into a spectacle frame in a state where there is lens a front angle by using a computer, wherein the spectacle lens has dioptric power, the method comprising: a step for creating initial lens shape data by which the shape of a lens front surface and the shape of a lens back surface are determined, wherein the initial lens shape data is lens shape data that can obtain desired prescription values in a state where there is no front angle; and a lens back surface shape data correcting step for correcting the shape of the lens back surface with respect to the created initial lens shape data, wherein the lens back surface shape data correcting step comprises: a prismatic effect correcting step for correcting the shape of the lens back surface so that the prismatic effect undergone via the lens of corrected lens shape by a plurality of rays passing through a rotation center of the eye or an entrance pupil center of the eye when viewing objects in front vision assumed in optical design in a state where there is a lens front angle is identical or close to the prismatic effect undergone via the lens of initial lens shape by the plurality of rays passing through the rotation center of the eye or the entrance pupil center of the eye when viewing objects in front vision assumed in optical design in a state where there is no lens front angle, wherein the plurality of rays include a ray in the front view direction, and wherein astigatism and a power error of the lens acting on the eye in a state where there is a lens front angle is increased compared with those before performing the prismatic effect correcting step; and a dioptric power correcting step for correcting the shape of the lens back surface so that, in a state where the lens having a lens shape obtained after performing the prismatic effect correcting step has a lens front angle, power of light acting on the eye in a state where a line-of-sight extends from the rotation center of the eye or the entrance pupil center of the eye when viewing objects in front vision assumed in optical design to a power measurement position of the lens is identical to power of the prescription values. a step for creating initial lens shape data by which the shape of a lens front surface and the shape of a lens back surface are determined, wherein the initial lens shape data is lens shape data that can obtain desired prescription values in a state where there is no front angle; and a lens back surface shape data correcting step for correcting the shape of the lens back surface with respect to the created initial lens shape data, wherein the lens back surface shape data correcting step comprises: a prismatic effect correcting step for correcting the shape of the lens back surface so that the prismatic effect undergone via the lens of corrected lens shape by a plurality of rays passing through a rotation center of the eye or an entrance pupil center of the eye when viewing objects in front vision assumed in optical design in a state where there is a lens front angle is identical or close to the prismatic effect undergone via the lens of initial lens shape by the plurality of rays passing through the rotation center of the eye or the entrance pupil center of the eye when viewing objects in front vision assumed in optical design in a state where there is no lens front angle, wherein the plurality of rays include a ray in the front view direction, and wherein astigatism and a power error of the lens acting on the eye in a state where there is a lens front angle is increased compared with those before performing the prismatic effect correcting step; and a dioptric power correcting step for correcting the shape of the lens back surface so that, in a state where the lens having a lens shape obtained after performing the prismatic effect correcting step has a lens front angle, power of light acting on the eye in a state where a line-of-sight extends from the rotation center of the eye or the entrance pupil center of the eye when viewing objects in front vision assumed in optical design to a power measurement position of the lens is identical to power of the prescription values.