Essilor International

Jean-Luc Perrin

Damien Paille

Martha Hernandez Castaneda

Cyril Guilloux

Benjamin Rousseau

Thierry Bonnin

Gildas Marin

Paul Joret

Isabelle Poulain

Guilhem Escalier

Cécile Petignaud

Ludovic Jouard

Bernard Bourdoncle

Martha Hernandez-Castaneda

Thierry Laloux

Eric Perrier

Lucie Ernoult

Disclosed is a method for determining a specific near vision power of an ophthalmic lens to be provided to a wearer having an ophthalmic prescription, the specific near vision power being for near distance vision, the method including: an ophthalmic lens providing step during which at least an ophthalmic lens having a near distance vision zone including a mean power adapted for near distance vision is provided to the wearer; a near vision task speed determining step during which the processing speed of a near vision task by the wearer when wearing the provided ophthalmic lens is determined; wherein the ophthalmic lens providing step and the near vision task speed determining step are repeated with ophthalmic lenses having different mean power, so as to determine a specific near vision power corresponding to the mean power providing an improved near vision task processing speed.

Method for determining a specific near vision power of an ophthalmic lens

Disclosed is a computer-implemented method for assessing suitability between an optical device and its user, the optical device including an optical lens placed in front of an eye of the user when the user uses the optical device, the optical lens having a plurality of optical zones having different optical functions, the method including at least the following steps: a requesting step, during which the user, equipped with the optical device, is requested to use the optical device in a plurality of different visual situations, each visual situation being associated with an optical zone of the optical lens and during which the user looks at a visual target located in the user's natural environment through the optical lens; and a suitability index assessing step, during which the user assesses a suitability index based on his use of the optical device in the plurality of different visual situations.

Method for assessing the suitability between an optical device and a user of the optical device

A method for determining a cylinder of an ophthalmic lens to be mounted on a spectacle frame is provided, the method including: providing a measuring device configured to run a Jackson Cross Cylinder procedure; determining components of a first vector of the cylinder in a two-dimensional vector cylinder representation; and determining components of a second vector of the cylinder in the two-dimensional vector cylinder representation, the components of the second vector of the cylinder being determined such that a Euclidian distance between the first vector and the second vector is independent of a value of the cylinder.

Method for determining the clyinder of an ophthalmic lens

A method for determining optical power of an optical lens to be placed in front of an eye of a person, the method including: a first distance determining during which a first gazing distance is determined, which is the distance between the eye of the person and a first visual stimulus when the person gazes at the first visual stimulus in a given gazing direction with a first level of attention: a second distance determining during which a second gazing distance is determined, which is the distance between the eye of the person and a second visual stimulus when the person gazes at the second visual stimulus in the given gazing direction with a second level of attention different from the first level of attention; and an optical power determining during which the optical power adapted for the person is determined based on the first and second gazing distances.

Method for determining the optical power of an optical lens

Disclosed is a method for measuring the refraction of an individual by a refraction measuring appliance, including: an initial step of determining at least one initial value of a visuo-postural parameter of the individual; a step of processing the initial value in order to deduce at least one initial value of a regulating parameter of the refraction measuring appliance, the regulating parameter being associated with the visuo-postural parameter; a step of regulating the refraction measuring appliance according to the initial value of the regulating parameter; and a step of measuring the refraction of the individual by the measuring appliance regulated in this way. Also disclosed is a method for the optical design of an ophthalmic lens, and to a pair of glasses including such a lens.

Method and system for measuring refraction, method for the optical design of an ophthalmic lens, and pair of glasses comprising such an ophthalmic lens

A method for determining a dioptric parameter includes: first, a test optical element having a dioptric function having a specific value of the dioptric parameter to be determined is provided and the person looks at a visual target using the test optical element; second, evaluation data and certitude data are collected, the evaluation data being indicative of the visual assessment expressed by the person looking at the visual target using the test optical element and certitude data being indicative of the degree of certainty of the person upon expressing the visual assessment. The first and second steps are repeated by varying the value of the dioptric parameter. For each value of the dioptric parameter tested a value a degree of certainty of the person is determined. The value of the dioptric parameter of the person is determined based on the values of degree of certainty of the person.

Method for determining a dioptric parameter of an ophthalmic lens to be provided to a person

A method, implemented by computer means, for adapting the sensorial output mode of a sensorial output device, for example a head mounted sensorial output device, to a user of the sensorial output device, the method comprising: a user attentional availability data providing step, during which user attentional availability data indicative of the attentional availability of the user are provided, a user sensorial perception threshold determining step during which a sensorial perception threshold of the user is determined based on the user attentional availability data, and an sensorial output mode adapting step during which the sensorial output mode of the output device is adapted based on the user attentional availability data and the user sensory perception threshold.

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Charenton-le-Pont, France

Jean-Luc Perrin