Essilor International (compagnie Generale D'optique)

Essilor International

Céline Carimalo

Cyril Guilloux

Marie-Anne Berthezene

Björn Drobe

Diane De Gaudemaris

Bruno Decreton

Eric Roland

Bénédicte Deldalle

Diane DeGaudemaris

Diane De Gaude-Maris

A system and method for updating a generic ophthalmic lens design is described. The method includes the steps of selecting a generic ophthalmic lens design from a generic ophthalmic lens design database and receiving, over a data-communication network, lens order data associated with at least one individual lens wearer. The method also includes the steps of creating, using the generic ophthalmic lens design and the lens order data, at least one customized ophthalmic lens design being customized for the respective at least one individual lens wearer and updating the generic ophthalmic lens design in the generic ophthalmic lens design database using the at least one customized ophthalmic lens design.

System and method for real time segmentation

Progressive multifocal ophthalmic lens having a power addition (Add) and an astigmatism prescription, and having a far vision point CM, a near vision point NV, and an intermediate vision point IV positioned between CM and NV. The resulting astigmatism in the far and near vision zones is smaller than or equal to the resulting astigmatism in the intermediate vision zone, wherein the resulting astigmatism is the difference between the prescribed astigmatism and the astigmatism generated by the working lens under usual wear conditions. The lens provides good optical quality images in the far and near vision zones, and the resulting astigmatism in the intermediate vision zone encourages the wearer to use the far and near vision zones rather than the intermediate vision zone, thus reducing the risk of increasing the degree of myopia of the wearer in the long term.

Progressive multifocal ophthalmic lens designed to inhibit progressive myopia of the wearer

A method for the determination of a progressive ophthalmic lens for a given wearer comprises the states of:

Method for the determination of a progressive ophthalmic lens

A progressive ophthalmic lens for the correction of myopia, that comprises an upper area in which the correction is adapted for peripheral vision of the wearer. Such a lens reduces the risk of long term worsening of myopia for the lens wearer by reducing the defocalisation of an image formed on the retina outside the foveolar area. Also disclosed is a method for making such a lens. According to one improvement, the correction of myopia for the peripheral vision in the upper area of the lens is further adjusted based on a tendency of the wearer to turn the eyes or the head for watching an eccentric object.

Progressive ophthalmic lens for myopia correction and method for making such a lens

A method for the determination by optical optimization of a personalized progressive ophthalmic lens intended to be inserted into a frame chosen by a given wearer for whom a power addition has been prescribed in near vision, the method comprising the stages of: The method makes it possible to retain the proportion of the distribution between the far-vision, near-vision and intermediate-vision zones whatever the size and the shape of the frame chosen.

A method for manufacturing an ophthalmic progressive addition lens () with customized design features adapted to a wearer, the method comprising the following steps: /a/ a providing step of a lens substrate; /b/ a modifying step in which a first target virtual lens is provided and modified so as to obtain a second target virtual lens, the second target virtual lens having a design feature parameter substantially equal to a customized design feature parameter; /c/ an optimizing step in which an optimized trial virtual lens is obtained by optimizing a trial virtual lens in such a manner that the optimized trial virtual lens has optical characteristics which are substantially equal to the characteristics of the second target virtual lens; and /d/ a manufacturing step of the ophthalmic progressive addition lens from the lens substrate according to the trial virtual lens. Method for the determination of a customized ophthalmic progressive addition lens with customized design features. Related computer program product.

Ophthalmic progressive addition lens with customized design feature

A method for the determination by optical optimization of a personalized progressive ophthalmic lens intended to be inserted into a frame chosen by a given wearer for whom a power addition has been prescribed in near vision, the method comprising the stages of: The method allows the design of the lens to be adapted to the size and the shape of the frame chosen.

A method for the determination of a progressive ophthalmic lens for a given wearer comprises the stages of:

The invention concerns an ophthalmic lens having a complex surface, with a substantially umbilical meridian and an average sphere progression ranging between 0.50 diopter and 0.75 diopter. The lens is prescribed for esophoric and non-presbyopic users. The lens is prescribed as a standard unifocal lens. Through the presence of the average sphere progression, the user is less adapted to near vision, thus compensating for his/her esophoria.

Ophthalmic lens

The invention relates to an ophthalmic lens for long-sighted and intermediate vision comprising a complex surface provided with an optical centre, a substantially umbilicated meridian line and an average size sphere progression on the top surface equal to or greater than 0.50 diopters. The complex surface is provided in the top part thereof with a long-sighted vision area which is formed by cylinder points equal to or less than 0.25 diopters and covers an angular sector focused on the optical centre and whose angle is equal to 160&#xb0;. Said complex surface also comprises an average size substantially constant sphere on the meridian line in the long-sighted vision area and a progression length equal to or less than 12 mm. Said progression length is defined as a vertical distance between the optical centre and a median point for which the average sphere if greater than 85% of progression on the average sphere in the optical centre. The inventive lens is suitable for driving and prescribed to persons having additional prescription greater than a power progression, whereby a correction adaptable to the power prescription of a longsighted vision person is provided in the top part of the lens. The lower part of the lens ensures the correction needed for an intermediate vision person.

Growing community of inventors

Singapore, Singapore

Céline Carimalo