Essilor International

Julien Hubert

Bruno Fermigier

Aude Bouchier

Céline Lechat

Aude Carrega

Maxime Boiffier

Alexandra Roos

Catherine Derbois

Disclosed is a method for manufacturing an ophthalmic article including a substrate and a functional wafer securely fastened to a first curved face of the substrate, the manufacturing method including the steps of providing the functional wafer preformed according to a first desired shape, the preformed functional wafer having a first preformed face intended to be applied on the first curved face of the substrate, the first preformed face being defined by first geometrical characteristics; determining second geometrical characteristics of the first curved face of the substrate to be manufactured according to the first geometrical characteristics of the first preformed face of the preformed functional wafer; manufacturing the first curved face according to the second geometrical characteristics determined; fixing the preformed functional wafer to the manufactured substrate by applying the first preformed face on the first curved face in order to form the ophthalmic lens.

Method for manufacturing an ophthalmic article

Disclosed are assessment devices and methods to assess eyesight. In one embodiment, an eyesight assessment device includes a medium having one or more imaging functionalities and operable to project images for display based on the one or more imaging functionalities. The device also includes an optical source operable to project light and being positioned at one or more positions relative to the medium, such that at least one of images are projected from the medium based on the position of the optical source relative to the medium and the one or more imaging functionalities of the medium, where each image corresponds to an object provided for display at a virtual distance relative to a user of the eyesight assessment device, and where each image includes one or more of user assessable display characteristics that are indicative of a visual condition of the user.

Eye assessment devices and methods to assess eyesight

The invention relates to a method for determining an usage index value for an single-vision ophthalmic lens adapted to correct the vision of a myopic wearer. According to the invention the method comprises: an optical profile providing step Sduring which an optical profile of said ophthalmic lens is determined; a material profile providing step Sduring which a material profile of said ophthalmic lens is determined; a physical parameter determining step Sduring which at least one physical parameter among physical parameters of said optical profile and material profile is determined; a gain assessing step Sduring which at least two gains brought by at least one determined physical parameter is evaluated on at least one evaluation criterion of dissatisfaction of said wearer when wearing said ophthalmic lens; an usage index value determining step Sduring which a value of an usage index is determined by adding the assessed gain for the evaluation criteria.

Method for determining an usage index value for an single-vision ophthalmic lens

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Charenton le Pont, France

Julien Hubert