Computer-implemented method for optimising a progressive spectacle lens, comprising the steps of: specifying an initial object distance function A 1 G ( y), acquiring object distance data, wherein the object distance data comprise an object distance at at least one specified point in the main line of sight; modifying the initial object distance function on the basis of the acquired object distance data; optimising the progressive spectacle lens, wherein the modified object distance function is taken into account when optimising the spectacle lens, wherein the modification of the initial object distance function A 1 G ( y) comprises superposition A 1 ( y) = A 1 G ( y) + A 1 Korr ( y) of the initial object distance function A 1 G ( y) on a correction function A 1 Korr ( y), wherein the correction function comprises at least one variable parameter that is determined on the basis of the acquired object distance data such that the value of the modified initial object distance function is equal, at at least one specified point, to the reciprocal value of the acquired target object distance for this point, and wherein the object distance function is defined as the reciprocal object distance along the main line of sight and y is the vertical coordinate, wherein the correction function is a doubly asymptotic function A 1 Korr y = b korr + a korr 1 + e c korr y + d korr m korr having the parameters a korr, b korr, c korr, d korr, m korr, wherein the parameters b korr and a korr of the correction function are determined on the basis of the acquired object distance data; or wherein the correction function is a linear function of the initial object distance function A Korr ( y) = c + mA 1 G ( y) having the parameters c and m. specifying an initial object distance function A 1 G ( y), acquiring object distance data, wherein the object distance data comprise an object distance at at least one specified point in the main line of sight; modifying the initial object distance function on the basis of the acquired object distance data; optimising the progressive spectacle lens, wherein the modified object distance function is taken into account when optimising the spectacle lens, wherein the modification of the initial object distance function A 1 G ( y) comprises superposition A 1 ( y) = A 1 G ( y) + A 1 Korr ( y) of the initial object distance function A 1 G ( y) on a correction function A 1 Korr ( y), wherein the correction function comprises at least one variable parameter that is determined on the basis of the acquired object distance data such that the value of the modified initial object distance function is equal, at at least one specified point, to the reciprocal value of the acquired target object distance for this point, and wherein the object distance function is defined as the reciprocal object distance along the main line of sight and y is the vertical coordinate, wherein the correction function is a doubly asymptotic function A 1 Korr y = b korr + a korr 1 + e c korr y + d korr m korr having the parameters a korr, b korr, c korr, d korr, m korr, wherein the parameters b korr and a korr of the correction function are determined on the basis of the acquired object distance data; or wherein the correction function is a linear function of the initial object distance function A Korr ( y) = c + mA 1 G ( y) having the parameters c and m.