Patent ID: 7930151

Claim:
A method for calculating an individual progressive lens for a customer, comprising: creating a basic design for lenses based on theoretical specifications, wherein the basic design is calculated for a given lens power and for default values for individual parameters; creating one or more starting designs for wearing tests from the basic design; calculating individual progressive lenses for wearing tests from the starting designs based on individual data of test persons other than the customer, said test persons being selected to wear eye-glasses with said individual progressive lenses, performing and analyzing the wearing tests from the starting design, modifying and adjusting the starting designs on the basis of the wearing tests of said individual progressive lenses by said test persons; creating final starting designs for production from the modified and adjusted starting designs; and calculating individual progressive lens for the customer from the final starting designs according to individual data, wherein said starting designs for wearing tests and the starting designs for production being a limited number of progressive lenses, which are calculated for default values of the individual parameters and which cover a predetermined range of powers of the lens, wherein the starting designs for wearing tests comprising at least one series of progressive lenses for myopia, one series of progressive lenses for emmetropia and one series of progressive lenses for hyperopia, one series of progressive lenses comprising at least two progressive lenses with differing addition, and wherein the number of the starting designs for the production is greater than the number of the starting design for the wearing tests.