Method for determining target optical functions

摘要

A method for determining target optical functions for a pair of ophthalmic lenses is provided, the method comprising steps of: generating a first target optical function (OFT1) for a first lens of the pair based at least on data relating to a first eye, generating a second target optical function (OFT2) for a second lens of the pair based at least on data relating to the first eye. This method makes it possible to obtain optical functions having improved symmetry. Thus, when using the target optical functions in an optical optimization method, lenses with improved binocular properties can be obtained. The comfort of the wearer of the pair of lenses is thus improved.

主权项

1. A non-transistory computer-implemented method for determining target optical functions for a pair of ophthalmic lenses comprising a first lens for a first eye and a second lens for a second eye of a wearer of the pair of the ophthalmic lenses, wherein a target optical function is a set of optical criteria values defined for given gaze directions, representing the performance to be reached, the method comprising steps of:
generating a first target optical function for the first lens of the pair of the ophthalmic lenses based at least on data relating to the first eye, wherein said data relating to the first eye are selected from monocular data linked to prescription data for the first eye or a combination of prescription data, data linked to the first eye's biometry and binocular data; creating an intermediate optical function for the second lens of the pair of the ophthalmic lenses based on a transformation of the first target optical function, wherein said transformation applies to the values of one optical criterion of the first target optical function, and wherein said transformation is selected from linear transformations such as
shifts, including power shifts, andhomotheties; and generating a second target optical function for the second lens of the pair of the ophthalmic lenses by modifying the intermediate optical function based on the prescription data of the second eye.