METHOD OF PREPARING AN OPERATION OF SURFACING OF A LENS BLANK

A method of preparing an operation of surfacing of a lens blank to transform the lens blank into a generated lens having a predetermined prism corresponding to an inclination between a front surface and a back surface of the generated lens at least locally. The method is implemented using a processing module and comprises: - for a plurality of devices destined to interact with the lens blank during the operation of surfacing to manufacture the predetermined prism of the generated lens, attributing a priority order to each device of said plurality of devices, - based on said priority order, attributing to each of the plurality of devices a prism portion (P 1 , P 2 , P 3 ) which is zero or comprised in a respective range delimited by a respective minimum prism portion (L 1 , L 2 , L 3 ) and a respective maximum prism portion (M 1 , M 2 , M 3 ), said prism portion being representative of the contribution of the corresponding device to the prism of the generated lens, for further interaction of each device with the lens blank during the operation of surfacing to obtain, based on the prism portions, the generated lens having finally said predetermined prism.