Essilor International (Compagnie Generale D'optique)

Essilor International

Farid Karioty

Aude Contet

Cyril Guilloux

Benedicte Deldalle

Benjamin Rousseau

Laurent Calixte

Isabelle Poulain

Damien Paille

Martha Hernandez-Castaneda

Helene De Rossi

Marie-Gaelle Froeliger

Bénédicte Deldalle

Cedric Goulard

Bruno Doucin

Fanny Ferre

Stéphanie Vialet

Stephanie Vialet

Marie-Gaëlle Froeliger

Cédric Goulard

Disclosed is a method for comparing first and second ophthalmic lenses, including:

Method for comparing a first ophthalmic lens with a second ophthalmic lens

A multifocal lens supply system including a multifocal lens ordering computing unit and a multifocal lens determination computing unit, for providing to a wearer a customized progressive spectacle ophthalmic lens having a customized addition Add, wherein Add=Add+corr, wherein corr is a corrective value which is the output of a function where the input is at least an individual wearer parameter value and at least an output value over the input range is different from nil, and wherein Addis a prescribed addition.

Multifocal lens supply system for providing to a wearer a customized progressive spectacle ophthalmic lens

A pair of progressive ophthalmic lenses () meets special conditions for improving binocular vision of a wearer, while avoiding discomfort for peripheral vision. A first one of the conditions relates to height values of far vision fields, intermediate vision fields and/or proximate vision fields, for indicating that the fields are different enough in height between both lenses. A second one of the conditions sets a maximum value for the relative difference in mean refractive power gradient between both lenses.

Pair of progressive ophthalmic lenses

A pair of progressive ophthalmic lenses () meets special conditions for improving binocular vision of a wearer, while avoiding discomfort for peripheral vision. A first one of the conditions sets a minimum value for the difference between nasal and temporal half-widths of far vision field and/or proximate vision field for at least one of the lens. A second one of the conditions sets a maximum value for the relative difference in mean refractive power gradient between both lenses.

A pair of progressive ophthalmic lenses () meets special conditions for improving binocular vision of a wearer, while avoiding discomfort for peripheral vision. A first one of the conditions relates to width values of far vision fields and/or proximate vision fields, for indicating that the fields are different enough in width between both lenses. A second one of the conditions sets a maximum value for the relative difference in mean refractive power gradient between both lenses.

Pair of progressive ophthamlic lenses

A process for determining a pair of personalized progressive ophthalmic lenses. and a computer program product associated to these processes. Right-handed persons and left-handed persons behave very differently when executing certain near vision tasks, such as writing on a sheet of paper. However, current lens designs do not take into account these behavior differences. The comfort of wearing a pair of ophthalmic lenses can be improved for the wearer for whom the lenses are intended by adapting his near vision according to his handedness.

Process for determining a pair of progressive ophthalmic lenses

Growing community of inventors

Charenton le Pont, France

Farid Karioty