Abstract: A method for determining a fitted position of an ophthalmic lens to be mounted on a spectacle frame equipping a wearer, the fitted position being defined with respect to a wearer referential linked to the head of the wearer. The method includes defining at least one fitting criteria relating to the positioning of the ophthalmic lens with respect to the spectacle frame, determining frame 3D data at least partially representative of the geometry and position of the spectacle frame with respect to the wearer referential, determining lens 3D data at least partially representative of the geometry of at least a peripheral portion of the ophthalmic lens, and determining the fitted position of said ophthalmic lens with respect to the wearer referential using the frame 3D data and said lens 3D data to fit the ophthalmic lens within the spectacle frame meeting the fitting criteria.

Abstract: A method for implemented by computer means for determining an oriented 3D representation of the head of a person in a natural visual posture, including receiving a first dataset corresponding to a first 3D representation of the head of the person in a first frame and the position of the rotation center of at least one eye of the person in said first frame, determining a second dataset corresponding to the orientation of the head of the person in a natural visual posture in a second frame, and determining an oriented 3D representation of the head of the person by orienting the first 3D representation of the head of the person based on the orientation of the head of the person in a common frame.

Abstract: Disclosed is a method including the steps of: a) illuminating a pupil of the eye of a subject by a light source; b) acquiring at least one picture of the pupil including an image of the reflection of the light source on the retina of the eye, by means of an image-capture apparatus; and c) and determining a refraction feature of the eye from at least a geometrical feature, a positional feature, or an intensity distribution of the image of the reflection of the light source. Optical distances between the pupil and, respectively, the light source and the image-capture apparatus, are different. An associated device is also described.

Abstract: 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.

Abstract: A method for determining an optical system of a personalized progressive lens for a given wearer including: a) providing a mean direction of gaze determined for the wearer in a reference frame tied to the head of the wearer; b) determining a target value for at least one optical design parameter as a function of the mean direction of gaze determined in a); c) calculating the optical system of the progressive lens by an optical optimization procedure on the basis of target values, wherein the target value of each optical design parameter as a function of the mean direction of gaze determined in b) is a target value.

Abstract: A device for testing visual behavior of a person, including: an active display configured to display at least one visually predominant target in a plurality of positions that are variable over time and that are aligned along at least one line or column, and a unit for controlling the display. The unit is programmed so that consecutive display positions of the target follow, over time, a visual tracking protocol.

Abstract: An ophthalmic progressive addition lens for a presbyopic wearer which has a prescribed far vision mean refractive power a non nil prescribed addition, ADDp, the lens having a far vision reference point, a mean refractive power, PPO(?, ?), a module of resulting astigmatism, ASR(?, ?), a meridian line, ML(?, ?), the (?, ?) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (?, ?) joining the center of rotation of the eye, CRE, and the lens, wherein ? is a lowering angle in degree and ? is an azimuth angle in degree, and wherein ? lens criterion, CRIT, fulfils following requirement: 0.38?CRIT?4.50, where: CRIT=NumeratorCRIT/DenominatorCRIT, NumeratorCRIT=(A1/A2)+(PPO(?FV, ?FV)/(100·ADDp)); A1=?100%??85%; A2=?100%??60%; DenominatorCRIT=[(PeaksMean/ADDp)+(PPO(?FV,?FV)/(8·ADDp))]3.

Abstract: An ophthalmic progressive addition lens for a myopic or emmetropic presbyopic wearer which has a prescribed far vision mean refractive power and a non nil prescribed addition, ADDp, the lens having a far vision reference point, a mean refractive power, PPO(?, ?), a module of resulting astigmatism, ASR(?, ?), a meridian line, ML(?, ?), the (?, ?) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (?, ?) joining the center of rotation of the eye, CRE, and the lens, wherein ? is a lowering angle in degree and ? is an azimuth angle in degree, and wherein a lens criterion, A1/A2, fulfils: A1/A2?0.50, wherein: A1=?100%??85%; A2=?100%??60%.

Abstract: Disclosed is a method for detecting a probable error in a set of data relative to a wearer and/or to a frame chosen by the wearer, at least one of these data being used for ordering an ophthalmic lens to be fitted into the frame for the wearer, the set of data including at least a value of a first parameter and a value of a second parameter different from the first parameter, the first and second parameters being relative to the wearer and/or a frame chosen by the wearer, the method including: a) determining a level of consistency of the values of the first and second parameter with each other, based on a predetermined statistical consistency rule linking the first and second parameters; and b) emitting, based on this level of consistency, an alert signal in order to report a probable error.

Abstract: Disclosed is a method for determining at least one visual behavior parameter of a person. The method includes the following steps: a step of encouraging the person to perform a visual test during which he observes at least one target position, a step of measuring an item of data that is representative of at least one viewing direction of the person during the visual test, a step of determining a reference viewing direction on the basis of the representative data measured, and a step of positioning, relative to the reference viewing direction, at least one measured target position that is determined, in a reference marker associated with the head of the person, on the basis of the data that is representative of the viewing direction of the person measured during the visual test.

Abstract: 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.

Abstract: Disclosed is an optometry measuring scale and method for determining a visual refraction value of an individual. According to the invention, the optometry measuring scale comprises a plurality of processed optotypes associated with a plurality of visual refraction corrections, wherein each processed optotype results from applying to a source optotype a determined image processing associated with a defined visual refraction correction, and an identification system for determining each defined visual refraction correction associated with each processed optotype.

Abstract: Disclosed is a method for constructing a model of a face, including: locating (L) a single plurality of characteristic points of the face, forming a corresponding plurality of specific models of the face each including the positions of the characteristic points of the face of the person at the time associated with the specific model in question; adjusting (A) by determining, for each specific model of the face, a model adjusted relative to a reference model of the face of the person, the adjusted model being obtained in accordance with the specific model in question such that the distance between the adjusted model and the reference model is minimal according to a given metric; and constructing (C), from the adjusted models obtained during the adjustment step (A), the model of the face of the person. Also disclosed are methods and devices for posture analysis using such a constructed model.

Abstract: Disclosed is a centering-blocking apparatus (1) including: a frame (10); an ophthalmic lens holder (20); a blocking unit (30) suitable for receiving a blocking accessory (200) with a view to depositing it on the ophthalmic lens; and a centering unit (40) suitable for revealing a reference system of the ophthalmic lens. According to an embodiment, the blocking unit is fixedly mounted on the frame whereas the holder is movably mounted on the frame.

Abstract: A device for testing visual behavior of a person, including: an active display configured to display at least one visually predominant target in a plurality of positions that are variable over time and that are aligned along at least one line or column, and a unit for controlling the display. The unit is programmed so that consecutive display positions of the target follow, over time, a visual tracking protocol.

Abstract: An ophthalmic progressive addition lens for a presbyopic wearer which has a prescribed far vision mean refractive power a non nil prescribed addition, ADDp, the lens having a far vision reference point, a mean refractive power, PPO(?, ?), a module of resulting astigmatism, ASR(?, ?), a meridian line, ML(?, ?), the (?, ?) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (?, ?) joining the center of rotation of the eye, CRE, and the lens, wherein ? is a lowering angle in degree and ? is an azimuth angle in degree, and wherein a lens criterion, CRIT, fulfils following requirement: 0.38?CRIT?4.50, where: CRIT=NumeratorCRIT/DenominatorCRIT, NumeratorCRIT=(A1/A2)+(PPO(?FV, ?FV)/(100·ADDp)); A1=?100%??85%; A2=?100%??60%; DenominatorCRIT=[(PeaksMean/ADDp)±(PPO(?FV,?FV)/(8·ADDp))]3.

Abstract: Disclosed is a method for determining at least one visual behavior parameter of a person. The method includes the following steps: a step of encouraging the person to perform a visual test during which he observes at least one target position, a step of measuring an item of data that is representative of at least one viewing direction of the person during the visual test, a step of determining a reference viewing direction on the basis of the representative data measured, and a step of positioning, relative to the reference viewing direction, at least one measured target position that is determined, in a reference marker associated with the head of the person, on the basis of the data that is representative of the viewing direction of the person measured during the visual test.

Abstract: An ophthalmic progressive addition lens for a myopic or emmetropic presbyopic wearer which has a prescribed far vision mean refractive power and a non nil prescribed addition, ADDp, the lens having a far vision reference point, a mean refractive power, PPO(?, ?), a module of resulting astigmatism, ASR(?, ?), a meridian line, ML(?, ?), the (?, ?) functions being determined in as-worn conditions of the lens by the wearer for gaze directions (?, ?) joining the center of rotation of the eye, CRE, and the lens, wherein ? is a lowering angle in degree and ? is an azimuth angle in degree, and wherein a lens criterion, A1/A2, fulfils: A1/A2?0.50, wherein: A1=?100%??85%; A2=?100%??60%.

Abstract: A method for determining an optical system of a personalized progressive lens for a given wearer including: a) providing a mean direction of gaze determined for the wearer in a reference frame tied to the head of the wearer; b) determining a target value for at least one optical design parameter as a function of the mean direction of gaze determined in a); c) calculating the optical system of the progressive lens by an optical optimization procedure on the basis of target values, wherein the target value of each optical design parameter as a function of the mean direction of gaze determined in b) is a target value.

Abstract: A method of determining at least one behavioral parameter of a wearer for designing an ophthalmic eyeglass lens includes: a) acquiring a first data set from a first representation of the head of the wearer in three dimensions; b) determining the relative position in space of at least three particular points of the head based on the data set; c) acquiring a second data set from a second representation of the head in a natural posture, including at least one image of each of the three particular points; d) identifying the image of each of the particular points from step b) on the representation of step c); e) deducing information relating to the position and/or to the orientation of the head of the wearer during the determination of the second representation from this identification; and f) determining the behavioral parameter of the wearer based on the information from step e).