Eyeglass lens, eyeglass lens manufacturing method, eyeglass lens design method, eyeglasses, and eyeglass manufacturing method

A method for manufacturing an eyeglass lens provided with a functional region including:

• a base region that causes a luminous flux that has entered an object-side face to exit from an eyeball-side face, enter a pupil of a wearer, and converge on a retina;
• and
• retinal non-convergence regions that cause a luminous flux that has entered the object-side face to exit from the eyeball-side face, and do not cause a luminous flux that has entered the pupil of the wearer to converge on the retina,
• at least some of the retinal non-convergence regions being buffer regions that compensates local negative astigmatism occurring due to spherical aberration of the eye at some positions of a distribution of the astigmatism, and
• the eyeglass lens at least including a lens substrate,
• the lens substrate including:
• a first substrate-refractive region serving as a basis of the base region;
• and
• second substrate-refractive regions serving as a basis of the retinal non-convergence regions,
• the method comprising:
• a lathe-processing step of performing lathe-processing on a mold so that surfaces of the second substrate-refractive regions, which serve as a basis of the buffer regions, are toric surfaces whose axial direction is a circumferential direction, and are elongated along the circumferential direction in a plan view;
• and
• a molding step of molding the lens substrate using the lathe-processed mold.