Abstract: A method for determining personalized near addition value for non-presbyopes, including measuring fusional amplitudes and phoria with at least one addition value, on both eyes of a person at a working distance; finding a mathematical function that predicts the change of a pair of fusional amplitudes and phoria as a function of addition value based on the addition value and the measured fusional amplitudes and phoria; and determining the near addition value according to a suitable relationship between the pair of fusional amplitudes and phoria on the mathematical function.

Abstract: Disclosed is eyeglasses equipment (1) including a frame (10), and at least one ophthalmic lens (20) mounted into the frame. The equipment includes a colored interface (30) that is placed between the frame and the lens.

Abstract: 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.

Abstract: Disclosed is eyeglasses equipment (1) including a frame (10), and at least one ophthalmic lens (20) mounted into the frame. The equipment includes a colored interface (30) that is placed between the frame and the lens.

Abstract: An optical system having a transmission pattern comprising at least a first zone Z1 extending from at or about 380 nm to a first limit L1 between Z1, and a second zone Z2. A third zone Z3 extends from a second limit L2 between Z2 and Z3 to about 780 nm. L1 may be greater than or equal to or about 436 nm. Second limit L2 may be greater than L1 and smaller than or equal to or about 487 nm. The average transmission values T1, T2, T3, in each zone Z1, Z2, Z3 may be: T2>5*(T1+T3)/2, with T1 the average transmission over Z1, T2 the average transmission over Z2, T3 the average transmission over Z3. T1 and T3 may be greater than or equal to or about 3% and smaller than or equal to or about 70%. T2 may be greater than or equal to or about 75%.

Abstract: A method for determining at least one optical design parameter for a progressive ophthalmic lens intended to be fitted in a frame of a wearer, depending on the wearer's visual behaviour, includes: a) placing the wearer in a situation in which he carries out a visual task at a first working distance; b) during this task, determining at least two gaze directions of the wearer at this first working distance in a frame of reference of the wearer's head; c) determining a relative position of a surface related to the frame or to an ophthalmic lens intended to be fitted in the frame; d) determining for each gaze direction at the first working distance the intersection between this gaze direction and the surface so as to establish a map of these points of intersection on this surface; and e) deducing the sought-after optical design parameter from this map.

Abstract: Disclosed is eyeglasses equipment (1) including a frame (10), and at least one ophthalmic lens (20) mounted into the frame. The equipment includes a colored interface (30) that is placed between the frame and the lens.

Abstract: 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.

Abstract: A method of evaluating the efficiency of a myopia control product for a wearer, the method comprising: an initial myopia indicator providing step S1, during which the initial value of a myopia indicator of the wearer is provided, a myopia condition step S2, during which the wearer using the myopia control product is placed in myopia inducing conditions, a resulting myopia indicator determining step S3, during which the resulting value of the myopia indicator of the wearer is determined after the wearer has been placed in the myopia inducing conditions, an efficiency evaluation step S4, during which the efficiency of the myopia control product is evaluated by comparing the initial value of the myopia indicator and the resulting value of the myopia indicator.

Abstract: A method of screening a state of ophthalmic fatigue of an individual, includes steps: a1) of positioning a target (120) in relation to the individual in such a way that the target is visible by at least one of the two eyes of the individual, a2) of assessment by the individual of the sharpness of the target, and a3) of deducing a state of ophthalmic fatigue of the individual depending on whether the target is seen by the individual in a sharp or blurred manner. According to the invention, prior to step a2), there is provision for a step a0) of adjusting the size of the target and/or the position of the target in relation to the individual, as a function of the age of the individual.

Abstract: A method for determining personalized near addition value for non-presbyopes, including measuring fusional amplitudes and phoria with at least one addition value, on both eyes of a person at a working distance; finding a mathematical function that predicts the change of a pair of fusional amplitudes and phoria as a function of addition value based on the addition value and the measured fusional amplitudes and phoria; and determining the near addition value according to a suitable relationship between the pair of fusional amplitudes and phoria on the mathematical function.

Abstract: A method for determining at least one optical design parameter for a progressive ophthalmic lens intended to be fitted in a frame of a wearer, depending on the wearer's visual behaviour, includes: a) placing the wearer in a situation in which he carries out a visual task at a first working distance; b) during this task, determining at least two gaze directions of the wearer at this first working distance in a frame of reference of the wearer's head; c) determining a relative position of a surface related to the frame or to an ophthalmic lens intended to be fitted in the frame; d) determining for each gaze direction at the first working distance the intersection between this gaze direction and the surface so as to establish a map of these points of intersection on this surface; and e) deducing the sought-after optical design parameter from this map.

Abstract: The visual perception of a lens wearer is not only along the gaze direction, but also has a non-zero transverse extension, which is called perceptual span. Perceptual span is skewed to extend further in the reading direction, i.e., the line portion to be read next relative to the line portion that was just read. A technique is provided that determines a pair of progressive ophthalmic lenses that take such perceptual span into account.

Abstract: An optical system having a transmission pattern comprising at least a first zone Z1 extending from at or about 380 nm to a first limit L1 between Z1, and a second zone Z2. A third zone Z3 extends from a second limit L2 between Z2 and Z3 to about 780 nm. L1 may be greater than or equal to or about 436 nm. Second limit L2 may be greater than L1 and smaller than or equal to or about 487 nm. The average transmission values T1, T2, T3, in each zone Z1, Z2, Z3 may be: T2 >5*(T1+T3)/2, with T1 the average transmission over Z1, T2 the average transmission over Z2, T3 the average transmission over Z3. T1 and T3 may be greater than or equal to or about 3% and smaller than or equal to or about 70%. T2 may be greater than or equal to or about 75%.

Abstract: Methods for optimizing postural prism to be added to a pair of ophthalmic multifocal lenses (lenses) adapted to a wearer and to slow down myopia progression are described. The method includes an initial pair of lenses in a providing step S1. In a postural prism adding step S2, a same postural prism is added to each lens. In a gazing step S3, the wearer gazes at a first distance target through the lenses with the added postural prism. A gazing direction determining step S4 determines the wearer's gazing direction during S3. Steps S2 to S4 may be repeated while changing the added postural prism, wherein the added postural prism is smaller than or equal to a maximum prism value. Steps S2 to S4 may be repeated to determine the smallest added postural prism for which the wearer's gazing direction in step S4 passes through the first vision zone.

Abstract: A method of evaluating the efficiency of a myopia control product for a wearer, the method comprising: an initial myopia indicator providing step S1, during which the initial value of a myopia indicator of the wearer is provided, a myopia condition step S2, during which the wearer using the myopia control product is placed in myopia inducing conditions, a resulting myopia indicator determining step S3, during which the resulting value of the myopia indicator of the wearer is determined after the wearer has been placed in the myopia inducing conditions, an efficiency evaluation step S4, during which the efficiency of the myopia control product is evaluated by comparing the initial value of the myopia indicator and the resulting value of the myopia indicator.

Abstract: A method of screening a state of ophthalmic fatigue of an individual, includes steps: a1) of positioning a target (120) in relation to the individual in such a way that the target is visible by at least one of the two eyes of the individual, a2) of assessment by the individual of the sharpness of the target, and a3) of deducing a state of ophthalmic fatigue of the individual depending on whether the target is seen by the individual in a sharp or blurred manner. According to the invention, prior to step a2), there is provision for a step a0) of adjusting the size of the target and/or the position of the target in relation to the individual, as a function of the age of the individual.

Abstract: The invention relates to a progressive multifocal ophthalmic lens comprising a power addition prescription Add and a complex surface, the complex surface comprising having far and near vision zone with resulting astigmatism smaller than Add/3 and an intermediate vision zone with resulting astigmatism greater than Add/3.

Abstract: The visual perception of a lens wearer is not only along the gaze direction, but also has a non-zero transverse extension, which is called perceptual span. Perceptual span is skewed to extend further in the reading direction, i.e., the line portion to be read next relative to the line portion that was just read. A technique is provided that determines a pair of progressive ophthalmic lenses that take such perceptual span into account.

Abstract: 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.