Abstract: A method for determining the value of the inset of a progressive addition lens according to a wearer comprising the steps of: providing convergence data, determining from the convergence data the inset of the progressive addition lens considering at least the convergence data and the prismatic effect of the progressive addition lens.

Abstract: Silicone hydrogel contact lenses are formed from the reaction product of a polymerizable composition comprising at least one hydrophilic vinyl amide-containing monomer, at least one acrylate-containing siloxane monomer, and at least one hydrophilic vinyl ether-containing monomer. The contact lenses have ophthalmically-acceptable surface wettability and can be manufactured without the use of volatile organic solvents.

Abstract: Silicone hydrogel contact lenses that are derived from a polymerizable composition including a first siloxane monomer represented by formula (3): wherein m of formula (3) represents one integer from 3 to 10, n of formula (3) represents one integer from 1 to 10, R1 of formula (3) is an alkyl group having from 1 to 4 carbon atoms, and each R2 of formula (3) is independently either a hydrogen atom or a methyl group; and at least one vinyl ether-containing cross-linking agent are described. Batches of silicone hydrogel contact lenses and methods of making silicone hydrogel contact lenses are also described. In one example, the batches of silicone hydrogel contact lenses are dimensionally stable, and the method of making is a method of making dimensionally stable silicone hydrogel contact lenses.

Abstract: Provided is a manufacturing method of a progressive refractive lens including a first surface being an object side surface; a second surface being an eyeball side surface; a far vision part for viewing a far vision; a near vision part for viewing a near vision; and a progressive part for viewing an intermediate vision provided between the far vision part and the near vision part, the method including: selecting a base curve according to a near vision power in the near vision part; selecting a semi-finish lens having the base curve; and forming a surface having a progressive refractive power by processing the semi-finish lens, wherein the near vision power is obtained by adding an addition power in the progressive refractive lens to a far vision power in the far vision part.

Abstract: The invention relates to a method for determining an aspherization layer for an ophthalmic lens for a wearer for whom a power and an astigmatism have been prescribed. The method can be used equally satisfactorily on a unifocal or a multifocal lens. The invention also extends to the method for determining an ophthalmic lens from an aspoherization layer obtained by the method. The invention improves the optical performance of lenses obtained from semi-finished lenses in which the complex surface is unknown.

Abstract: A light control system including a lens may also include a first portion carried by the lens to filter a first polarized light, and a first central region within the first portion. The light control system may further include a second portion carried by the lens to filter a second polarized light, and a second central region within the second portion. The first portion may not substantially be in series with the second portion, and the first central region may not be substantially in series with the second central region.

Abstract: A contact lens with a central portion, an iris portion, and a peripheral portion disposed about the iris portion; an effect band in or just outside the iris portion helps to provide the lens with a halo effect when worn on eye.

Abstract: An ophthalmic lens including: a prescription control point (P); an upper area having, relative to the point (P), and average-power continuous variation ?PuiSup that is monotonous between the point (P) and the point (Psup) (maximum variation point in absolute value) where the signed value of the variation ?PuiSupMax=Pui(Psup)?Pui(P) is between ?0.1 and ?0.4 dioptres; a lower area having, relative to the point (P), an average power continuous variation ?Puinf that is monotonous between the point (P) and the point (Pinf) (maximum variation point in absolute value) where the signed value of the variation ?PuiinfMax=Pui(Pinf)?Pui(P) is between +0.1 and +0.4 dioptres; the average power gradient being lower than 4.10?2×?Puitotal, where ?Puitotal=|?PuisupMax|+?PuiInfMax. Such a lens advantageously takes the accommodative dynamics of the eye into account and increases the visual comfort of the wearer.

Abstract: A method of preparing an ophthalmic lens for mounting in a surround of an eyeglass frame includes an acquisition step of acquiring a first longitudinal profile of the surround and an orientation parameter of the first longitudinal profile relative to a horizon line or a verticality line of the surround, and an edging step of edging the ophthalmic lens so as to form a generally profiled engagement ridge of desired section that extends along a second longitudinal profile (25) that is derived from the first longitudinal profile and of orientation that is derived from the orientation parameter. The method includes a determination step of determining at least one singular portion (Z1-Z12) of the second longitudinal profile as a function of the orientation parameter. During the edging step, the engagement ridge is locally pared away in the singular portion.

Abstract: The present disclosure provides a method of forming a removable protective coating on a hydrophobic surface of an ophthalmic lens element. The method includes providing an ophthalmic lens element having a hydrophobic surface. A non-aqueous coating composition is applied so as to coat at least part of the hydrophobic surface. The composition includes a film forming coating polymer and a compatible non-aqueous solvent. A substantial portion of the solvent is removed from the composition to form a removable protective coating on the ophthalmic lens element that adheres to the hydrophobic surface. The disclosure also provides a removable protective coating, and an ophthalmic lens element having the coating.

Abstract: The invention relates to the making of a progressive spectacle lens for customizing the lens based on the blur perception by a future lens wearer. Accordingly, a blur threshold value is determined for the wearer according to a blur perception criterion that varies based on an optical-power addition value prescribed for the wearer. The blur threshold value is associated with a reference sight direction for the lens provided to the wearer.

Abstract: A method of selecting a semi-finished ophthalmic lens according to a given spectacle frame comprising the steps of: providing the spectacle frame front face base data providing a list of semi-finished ophthalmic lenses with a plurality of front face bases, and selecting from the list of semi-finished ophthalmic lenses the semi-finished ophthalmic lens whose front base is the closest from the front base of the spectacle frame.

Abstract: This invention provides for a method of cleaning and pre-treating a forming optic surface used for the Free Form manufacture of at least one ophthalmic lens. More specifically, the cleaning which can be used to change the surface energy characteristics of the optical quality forming surface.

Abstract: A contact lens having nanoparticles integrated within, or deposited onto, the contact lens. A method for altering the optical density and spectral transmission or reflection response of a contact lens. The method includes obtaining a nanoparticle solution having a predetermined concentration. The method further includes exposing the contact lens in the nanoparticle solution for a predetermined period of time. A method for manufacturing a contact lens further includes exposing contact lens material to nanoparticles for a predetermined period of time to alter the optical density and spectral transmission or reflection response of the contact lens material. A contact lens may be formed after the material is exposed to the nanoparticles.

Abstract: A toric contact lens utilizes concentric annual rings, a continually varying lens design as a function of distance from the lens center or any other function to create a range of cylinder axis zones on a single lens.

Abstract: This invention discloses methods of manufacture and use of an energized Ophthalmic Device with an incorporated Storage Mode for a power source, the method of manufacturing said device, and a method of activation that may restore the power source to an operational mode.

Abstract: This invention discloses various designs for rings that make up the functionalized layers in a functional layer insert. More specifically, design parameters for the rings for incorporation into an ophthalmic lens. Additionally, functional aspects of the rings and materials for encapsulating the functional insert into an area outside the optical zone of the ophthalmic lens.

Abstract: The present invention provides a new method and system for preventing myopia acquisition in children and young adults. There is strong evidence that near work might lead to myopia. The axial length of a human eye is growing in the first 25 years of life. There is experimental evidence for feed-back loops to control this growth. Prolonged near-work might interfere with these feed-back loops in a way that the axial length growth accelerates to provide perfect near vision—myopia. Using reading glasses in normal-sighted children and young adults prevents interference of prolonged near-work with axial length growth, hence preventing environmentally driven myopia acquisition.

Abstract: This invention relates to comfortable ophthalmic devices and methods of producing such devices.

Abstract: A contact lens incorporating one or more dynamic stabilization zones fabricated from a material that is readily deformable under eyelid pressure during blinking allows for the control over rotation of the contact lens on the eye. As the material deforms, the angle of contact between the eyelid and the one or more dynamic stabilization zones changes as does the rotational force acting on the contact lens.

Abstract: A method and system for producing a first spectacle lens for a specific situation of wear for correcting at least a first astigmatic refraction of a first eye of a wearer, which has a first cylinder reference axis ?0(1) in a reference direction of sight ?ez(1) of the first eye. According to the method and apparatus, a primary direction of sight ?e?(1,p) of the first eye for at least one primary evaluation point ib(1,p) of the first spectacle lens is determined and a corresponding primary direction of sight ?e?,k(2,p) of a second eye of the spectacle wearer that corresponds to the primary direction of sight ?e?(1,p) of the first eye in the specific situation of wear is also determined.

Abstract: The present invention is a process for forming ophthalmic devices such as contact lenses, comprising the steps of curing a reactive mixture comprising at least one silicone-containing component, at least one hydrophilic component and at least one protonated diluent or protonatable diluent having a Hansen solubility parameter, ?p between about 2 and about 7 to form an ophthalmic device having an advancing contact angle of less than about 80°; contacting the ophthalmic device with an aqueous solution which is capable of changing the Hansen solubility parameter, ?p of the protonated or protonatable co-diluent to enhance water solubility and removing said diluent(s) with said aqueous solution.

Abstract: Multifocal contact lenses and methods and uses are described. The multifocal contact lenses include an optic zone. The optic zone has an aspheric power profile that provides a near vision refractive power and a distance vision refractive power, and provides an Add power that corresponds to the difference between the near vision refractive power and the distance vision refractive power. The multifocal contact lenses can improve binocular vision of presbyopic subjects by being prescribed such that the non-dominant eye contact lens is over-corrected for distance vision, and both multifocal contact lenses are under-corrected for the Add power requirement of the subject. Batches and sets of multifocal contact lenses are also described.

Abstract: In certain embodiments, an ophthalmic lens comprises an optic. The optic has an optical axis and surfaces comprising an anterior surface and a posterior surface. At least one of the surfaces has an inner refractive region and a refractive-diffractive structure disposed outwardly from the inner refractive region in a direction away from the optical axis. The inner refractive region is adapted to contribute refractively to a distance focus optical power. The refractive-diffractive structure comprises one or more diffractive regions and one or more refractive regions. A diffractive region is adapted to contribute diffractively to a multi-zone optical power, and a refractive region is adapted to contribute refractively to the distance focus optical power.

Abstract: Multifocal contact lenses and methods and uses are described. The multifocal contact lenses include an optic zone. The optic zone has an aspheric power profile that provides a near vision refractive power and a distance vision refractive power, and provides an Add power that corresponds to the difference between the near vision refractive power and the distance vision refractive power. The multifocal contact lenses can improve binocular vision of presbyopic subjects by being prescribed such that the non-dominant eye contact lens is over-corrected for distance vision, and both multifocal contact lenses are under-corrected for the Add power requirement of the subject. Batches and sets of multifocal contact lenses are also described.

Abstract: The present invention provides a process for producing an optical article, comprising mixing fullerene with a thermoplastic resin powder, pelletizing the mixture using a multiaxial extruder, and injection-molding the pellets, wherein the fullerene is fullerene having a carbon number of 70 or a derivative thereof, and has an average particle diameter of 5 ?m or less. An object of the present invention is to provide a process for producing a lens suitable in sunglasses or anti-glare spectacles which reduces blue hazard, and by which a blue signal can be confirmed visually, and an optical filter, and an optical article which can cut at least a part of visible light of 380 to 500 nm.

Abstract: A contact lens is provided with an indicator that is visible when placed in contact with a solution, but substantially transparent when removed from that solution. The indicator may be of the type to designate whether the contact lens is to be worn on the right or left eye.

Abstract: Feature patterns may be incorporated into the peripheral region of the back curve surface of contact lenses in order to increase tear exchange between the contact lens and the cornea. The feature patterns may be based upon fractal geometry and be incorporated anywhere in the periphery of the lens. The placement feature patterns are preferably determined utilizing a combination of simulations and experimentation.

Abstract: A method of making a contact lens involves depositing on a portion of a molding surface of a contact lens mold a colorant composition comprising a pigment, a copolymer of 2-hydroxyethylmethacrylate and N-vinylpyrrolidinone, and a crosslinking monomer.

Abstract: An optical apparatus (1) for wearing by a human user comprises one or more variable power lenses (4), means (10) for adjusting the power of the variable power lens (4), means (26) for capturing data representative of said adjustments, and means (28) for recording or transmitting the captured data.

Abstract: This present invention provides apparatus and methods for the activation of an energized ophthalmic lens. In some embodiments, the present invention provides for activation and deactivation of one or more components via wireless communication with an activation unit external to the ophthalmic lens. In some embodiments, an energized ophthalmic lens contains components which detect external signals, process the detected signal and activate components that change optical characteristics via the control of electrical energy.

Abstract: A method comprises providing a lens blank, a precision positioning device, an illumination device, and a vision system, wherein the lens blank includes at least one feature whose position is known relative to a position of an optic center of the lens blank, and wherein the vision system comprises an image sensor and a processor; mounting the lens blank on the precision positioning device; illuminating the lens blank with the illumination device; viewing the lens blank with image sensor of the vision system; determining the position of the at least one feature using the processor; and determining the position of the optic center of the lens blank based on the position of the at least one feature using the processor.

Abstract: Oriented contact lenses have patterns in which the portion that substantially lies over the sclera when worn on-eye is brightly colored or tinted; the colored or tinted contact lenses can have colored or tinted central portions that enhance the iris when worn on-eye and limbal rings that enhance the limbus.

Abstract: A preparation method includes: acquiring a frame of reference of ophthalmic lens defined at least by a first centering point and by a first orientation direction; acquiring a frame of reference of the rim of the eyeglass frame defined at least by a second centering point and a second orientation direction; acquiring a longitudinal profile representative of the shape of the rim and identified in the frame of reference of the rim; acquiring a curvature parameter or a curvature compensation parameter relating to the camber of the eyeglass frame; and putting the two frames of reference into coincidence, by positioning the two centering points relative to each other and by orienting the two orientation directions relative to each other as a function of the curvature parameter or the curvature compensation parameter so as to define the position and the orientation of the longitudinal profile in the frame of reference of the ophthalmic lens.

Abstract: A method for generating a trimming setpoint for an ophthalmic lens to be fitted in a surround of a spectacle frame, includes: a) within a coordinate system of the surround identified by a horizontal axis, acquiring the shape of a longitudinal profile of the surround and the perimeter length of this longitudinal profile; b) within an optical coordinate system of the ophthalmic lens which is identified by a centering point and by a horizontal axis and which is made to coincide with the coordinate system of the surround, centering and orienting the longitudinal profile, c) projecting the acquired longitudinal profile onto a curved surface deduced from a curvature parameter of the ophthalmic lens or from the spectacle frame, d) correcting in two operations, the shape of the projected longitudinal profile, so as to equalize its perimeter length with the perimeter length of the acquired longitudinal profile, and e) deducing from the corrected longitudinal profile the trimming setpoint.

Abstract: A model for testing contact lens designs is used in applications such as methods for designing contact lenses in which one subjects a lens design to the model, determines whether the lens meets its design objectives by application of the model, keeps the lens design if it does, and modifies the lens design if it does not.

Abstract: The present invention provides a plastic lens for spectacles wherein a transparent hardened coating layer containing a UV absorbing agent is formed on a peripheral edge of the plastic lens which has been subjected to edging or on a machined surface of the plastic lens which has been subjected to machining for attachment to a frame, a process for producing the plastic lens for spectacles, and an applicator suited for use in such a process. Discoloration of the peripheral edge of the edged plastic lens for spectacles or the machined surface of the plastic lens machined for attachment to a frame is prevented.

Abstract: More appropriate evaluation, design, and manufacture are made feasible by taking visual performances into consideration more appropriately. In order to achieve this object, in the present invention, spectacle lenses are evaluated using a visual acuity function including a factor representing physiological astigma. The physiological astigma herein means astigma in the phenomenon that an improved visual acuity is yielded when slight astigma is present in the region where the accommodation power is lower than the region indicating the range of positive relative accommodation power in which the accommodation power increases among the relative accommodation power as adaptable accommodation power in a state that convergence does not change.

Abstract: A method for determining the shape of the bevel of an ophthalmic lens so as to have the ophthalmic lens fit a given spectacle frame, the method comprising the steps of: providing the three-dimensional (xi, yi, zi) internal profile of the groove of at least a rim of the spectacle frame expressed in the principal axes (Xf, Yf, Zf) of the spectacle frame and the length Pf of the periphery of the groove of the rim, providing the blocking point of the ophthalmic lens and the horizontal direction Xl of the ophthalmic lens, projecting the three-dimensional (xi, yi, zi) internal profile of the groove of the rim on the front face surface of the ophthalmic lens so as to obtain a three-dimension projected groove shape (xp, yp, zp), modifying the coordinates of each point of the two-dimensional groove shape (xp, yp) based on two correction coefficient, Rx for the coordinate xp and Ry for the coordinate yp, with Rx+Ry=1 so as to have the length Pp of the three-dimensional groove projected shape (xp, yp, zp) equal to the l

Abstract: This invention discloses methods and apparatus for providing a variable optic insert into an ophthalmic lens. An energy source is capable of powering the variable optic insert included within the ophthalmic lens. In some embodiments, an ophthalmic lens is cast molded from a silicone hydrogel.

Abstract: Disclosed is a process for molding plastic optical articles with a hard coated film, comprising steps of coating one side of an optical film with a hard coating, pre-curing the hard coating to a tack free state while still maintaining the coating flexibility, making an insert from the coated film for the desired optical article, molding the plastic resin onto the insert through insert injection molding, and post-curing the molded article. The utilization of the pre-curing and post-curing steps have been found to eliminate hard coating cracks during the insert making and the molding step, while providing a hard coating with desired properties. Such an optical article possesses a hard coating integrated on its surface, thus, eliminating the need to further coat the optical article.

Abstract: An ophthalmic lens, such as an intraocular lens (IOL), a phakic IOL or a corneal implant, and a system and method relating to same, having coupled thereto and/or integrated thereon at least one rotationally asymmetric diffractive structure. The lens of the present invention may include a single or limited number of rotationally asymmetric diffractive echelettes that provides an extended depth of focus.

Abstract: A contact lens and a method for treating an eye with myopia is described. The contact lens includes an inner optic zone and an outer optic zone. The outer optic zone includes at least a portion with a first power, selected to correct distance vision. The inner optic zone has a relatively more positive power (an add power). In some embodiments the add power is substantially constant across the inner optic zone. In other embodiments the add power is variable across the inner optic zone. While in some embodiments the inner optic zone has a power designed to substantially eliminate lag of accommodation in the eye with myopia, in other embodiments, the add power may be higher.

Abstract: Contact lenses have patterns in which the portion that substantially lies over the sclera when worn on-eye is brightly colored or tinted; the colored or tinted contact lenses can have colored or tinted central portions that enhance the iris when worn on-eye and limbal rings that enhance the limbus.

Abstract: A method for selecting base-curves for an ophthalmic lens according to given prescription data comprising the steps of: providing a base-curve series consisting of a plurality of base-curves; calculating a target lens according to the prescription data; calculating the base-curves calculated lenses according to the prescription data; selecting, for at least an optical parameter and/or a geometrical parameter, a threshold value for the difference between the base-curves calculated lenses values and the target lens value of said parameter(s); determining the list of the base-curves of the base-curve series where said difference for said parameter(s) is less or equal to the selected threshold value(s).

Abstract: A toric contact lens having a prism ballast structure, wherein a center optical area, an annular transition area surrounding the center optical area determining a refractive degree, and an annular peripheral area surrounding the transition area, are defined on a lens front surface. A shape of the lens front surface has a mirror symmetry with a vertical meridian as a boundary, in such a manner that a thickness is smoothly decreased toward a lens lower end portion from two maximum thickness portions and where the thickness of the lens is maximum, and a valley-shaped slab-off is formed between these maximum thickness portions and.

Abstract: The invention relates to a photochromic optical article with reduced thermal dependency, comprising: (a) a transparent substrate, (b) a saturated photochromic layer having, in the activated state and at a temperature of 20° C. or greater, a relative transmission factor of less than 1% in the visible range, and (c) an anti-UV coating of plastic material at least partially covering the saturated photochromic layer, the said anti-UV coating containing at least one agent which absorbs UV radiation (anti-UV agent) and is distributed in a pattern consisting of a multitude of points, each having a surface area of less than 0.15 mm 2, the average distance between two neighbouring points lying between 0.5 and 2 mm and the ratio of the overall surface area of all the points to the total surface area of the anti-UV coating being such that the relative transmission factor of the optical article in the visible range in the activated state and at 20° C. or greater is at least equal to 5%.

Abstract: A non-progressive ophthalmic lens used in eye frames is provided with at least two distinct viewing areas. A very large lower area (lower relative to the face and eyes of the wearer) is provided with near to intermediate range vision correction prescription. A smaller, top portion of the lens is provided with distance range viewing correction prescription or zero power. In order to reduce image jump, the lenses are positioned such that the major axis of the base lens intersects and ends on the major axis of the supplementary lens, and both major axes lie in the same vertical plane. The two lens segments meet at a lined or blended intersection to minimize consumption of non-optically viewable space.

Abstract: A progressive-power lens having an eyeball-side surface including a distance portion and a near portion having different values of dioptric power and an intermediate portion that connects the distance portion and the near portion to each other, and an object-side surface including a spherical first region having a first curvature and extending along a principal meridian, a spherical second region having a second curvature equal to the first curvature and facing the distance portion, and a third region located outside the first region and below the second region and having a third curvature smaller than the first curvature.

Abstract: A method of deblocking an ophthalmic lens component (100) blocked on a thermoplastic layer (310) arranged on the holding surface (210) of a lens holding block (200) comprising the step of applying a pushing force on the thermoplastic layer (310), wherein the pushing force is greater or equal to 100 N and smaller or equal to 1000 N and wherein the pushing force is applied in a region of the thermoplastic layer (310) situated at a distance of at least 17.5 mm from the fitting point or prism reference point of the ophthalmic lens component (100).