Abstract: A contact lens (201) and methods of manufacturing such a lens are described. The lens (201) includes an optic zone (202). The optic zone (202) comprises a central region (205), the central region (205) having a first optical axis (219), a base radial curvature power, a base radial sagittal power, and a centre of curvature that is on the first optical axis (219). The optic zone (202) comprises an annular region (203), wherein at a point halfway across the width of the annular region (203) the annular region (203) has a radial curvature power of X, wherein X is greater than the base radial curvature power. The annular region (203) has an off-axis centre of curvature that is a first distance from the optical axis (219) such that, at a point halfway across its width, the annular region (203) has a sagittal power of Y, wherein Y is greater than the base radial sagittal power, and wherein Y is less than X.

Abstract: An ophthalmic lens (1) and methods (1000) of manufacturing an ophthalmic lens are described. The lens (1) includes an optic zone. The optic zone comprises a central region (5) having a curvature that is centred on an optical axis (19), the central region (5) providing a distance corrective radial curvature power. The central region (5) has a radial sagittal power profile that increases with increasing radial distance from the optical axis (19). The gradient of the radial sagittal power profile across the central region (5) increases with increasing radial distance from the optical axis (19), following a first curve. A first annular region (3) circumscribes the central region (5). The first annular region (3) provides a radial curvature add power.

Abstract: The present disclosure relates to a contact lens (100) including a diffractive optical element (101), an optical filter (103), and an optic axis (109) passing through the optical filter and the diffractive optical element. The diffractive optical element (101) is configured to focus visible light. The optical filter (103) is configured to filter out light with a wavelength of 450 nm to 495 nm. The optical filter (103) may allow through light with a wavelength of 500 nm to 750 nm. The optical filter (103) may include one or more colorants. The present disclosure also relates to a method (600) of manufacturing a contact lens. The present disclosure also relates to a method (700) of correcting the vision of a user.

Abstract: A hydrogel contact lens formulation for forming the polymeric body of a hydrogel contact lens comprising: a first high energy visible light (HEVL) absorber comprising a benzotriazole moiety and a second different high energy visible light (HEVL) absorber comprising a benzotriazole moiety, and a hydrogel contact lens obtained from the polymerisation of the formulation.

Abstract: A WS12-releasing contact lens is described as well as method of manufacturing the same. The WS12-releasing contact lens comprises a polymeric lens body and WS12 releasably adhered to the polymeric lens body. The amount of WS12 releasably adhered to the polymeric lens body provides a basal tear concentration in lens wearers of 2 ?g/ml to 8 ?g/ml WS12 after 30 minutes of lens wear. The WS12-releasing contact lens can be used to increase contact lens comfort, reduce eye fatigue, reduce sensations of ocular dryness and impart a pleasant, cooling sensation in the lens wearer without causing stinging or burning upon insertion.

Abstract: An ophthalmic lens (1), a film for use in an ophthalmic lens (1) and a method (500) of manufacturing an ophthalmic lens (1) are described. The lens (1) has an optical axis. The lens (1) comprises a layer (3) provided on a surface of a substrate (5). The layer (3) has a base refractive index and includes at least one gradient index optical element (7a, 7b) having an asymmetric refractive index profile. The at least one gradient index optical element (7a, 7b) focuses light from a distant point source on the optical axis to a point that is a first distance from the optical axis (2).

Abstract: A mandrel 1 for holding an ophthalmic lens member blank 52 during machining is disclosed. The mandrel 1 comprises a front surface 6 for receiving an ophthalmic lens member blank 52 to be machined; a rear surface 8 opposite the front surface 6; and one or more through-holes 10 extending between the front and rear surfaces 6,8. In use, wax applied to the rear surface 8 contacts an ophthalmic lens member blank 52 received on the front surface 6 via said one or more through-holes 10. Methods of producing an ophthalmic lens using such a mandrel and lenses produced using such a mandrel are also disclosed.

Abstract: A method (100) of manufacturing an ophthalmic lens is described. The method comprises providing a lens substrate (103) and providing a photocurable film (105). The method comprises using a digital light projection system to photocure at least one region of the film, thereby producing at least one photocured gradient index optical element having an asymmetric refractive index profile (107). The method comprises applying the film to a surface of the lens substrate (109).

Abstract: A multifocal ophthalmic lens wherein a first surface of the lens is shaped to form a surface power map and a second surface of the lens is shaped to form a second surface power map. The first surface power map and the second surface power map together form a lens power map. The first surface power map, the second surface power map, or the lens power map comprises a spiral. The spiral has a variation across at least a portion of the lens. Methods of making and using such lenses are also provided.

Abstract: A contact lens (201) and methods of manufacturing such a lens are described. The lens (201) includes an optic zone (202). The optic zone (202) comprises a central region (205), the central region (205) having a first optical axis (219), a base radial curvature power, a base radial sagittal power, and a centre of curvature that is on the first optical axis (219). The optic zone (202) comprises an annular region (203), wherein at a point halfway across the width of the annular region (203) the annular region (203) has a radial curvature power of X, wherein X is greater than the base radial curvature power. The annular region (203) has an off-axis centre of curvature that is a first distance from the optical axis (219) such that, at a point halfway across its width, the annular region (203) has a sagittal power of Y, wherein Y is greater than the base radial sagittal power, and wherein Y is less than X.

Abstract: A contact lens (2001) and methods of manufacturing such a lens (2001) are described. The contact lens (2001) comprises an optic zone (202). The optic zone (202) comprises a central portion having a centre of curvature that is on an optical axis (219), and a first annular portion (203) extending radially outwards from the central portion (205). The first annular portion (203) provides a curvature add power. One of an anterior surface and a posterior surface of the first annular portion (203) has a centre of curvature that is on the optical axis (219). The other of the anterior surface and the posterior surface of the first annular portion (203) has a centre of curvature that is separated by a first distance from the optical axis (219).

Abstract: Systems and methods for acquiring and inspecting lens images of ophthalmic lenses using one or more cameras to acquire the images of the lenses in a dry state or a wet state. The images are preprocessed and then inputted into an artificial intelligence network, such as a convolutional neural network (CNN), to analyze and characterize for type of lens defects. The artificial intelligence network identifies defect regions on the images and output defect categories or classifications for each of the images based in part on the defect regions.

Abstract: A multifocal ophthalmic lens wherein a first surface of the lens is shaped to form a surface power map and a second surface of the lens is shaped to form a second surface power map. The first surface power map and the second surface power map together form a lens power map. The first surface power map, the second surface power map, or the lens power map comprises a spiral. The spiral has a variation across at least a portion of the lens. Methods of making and using such lenses are also provided.

Abstract: The present invention concerns methods and an apparatus for producing contact lenses, such as silicone hydrogel contact lenses, and further relates to methods and an apparatus for producing silicone hydrogel contact lens mold assemblies, methods and apparatus for producing silicone hydrogel contact lenses using such mold assemblies, and silicone hydrogel contact lenses and lens member bodies produced using such methods and apparatus.

Abstract: A method of producing an ophthalmic lens member is disclosed. The method comprises mounting an ophthalmic lens member blank 16 on a mandrel 1 for machining. The mandrel 1 has a front surface 6 comprising a planar surface region 10, a curved surface region 8 and a tool trench 12 located between the curved surface region 8 and the planar surface region 10. The method comprises mounting the mandrel 1 on a machine tool; and then severing a portion of the ophthalmic lens member blank 16 by passing a cutting tool 70 through the ophthalmic lens member blank 16 until a portion of the cutting tool 70 is received in the tool trench 12. A mandrel 1 suitable for use in the method is also disclosed.

Abstract: A blister package for a contact lens is provided that includes a body and a seal, one or both of which is made up of a double layer foil component. The double layer foil component can be a seal component made of a sheet of material folded upon itself and defining a seal, a flap, and a fold. The seal and the flap intersect at the fold and the flap can be pulled away from the seal to form a pull tab useful to peel back the seal and open the bowl. The body can also, or instead, be made of a double layer foil component that forms at least the bowl such that the bottom of the bowl is double-walled. The double-walled bowl exhibits improved strength and can be provided with strengthening features such as ribs, ridges, channels, or grooves.

Abstract: An oleic acid-releasing contact lens is described as well as method of manufacturing the same. The oleic acid-releasing contact lens comprises a glycerophospholipid comprising an oleoyl group at the sn-2 position and sustains the release of oleic acid in the presence of sPLA2 enzyme present in human tears. The oleic acid-releasing contact lens can increase the duration of comfortable lens wearing time and/or reduce lens awareness events in a symptomatic contact lens wearer.

Abstract: An electrically-switchable flexible contact lens for conforming to an eye of a user is provided. The lens comprises a liquid crystal cell for changing a focal power of the contact lens, and the liquid crystal cell has a cell gap thickness between a first inner surface and a second inner surface, the liquid crystal cell comprising a diffractive optical element for correcting the vision of a user, wherein the diffractive optical element is arranged to maintain the cell gap thickness by providing support at one or more locations within the cell.

Abstract: A contact lens having an amount of at least one cooling agent and at least one TRPV1 inhibitor releasably adhered is described as well as method of manufacturing the same. The contact lens can be comfortably worn by contact lens wearers and can increase the duration of comfortable lens wearing time and/or reduce lens awareness events and/or reduce contact lens dryness in a symptomatic contact lens wearer and further can reduce or avoid any stinging/burning sensation when the contact lens is first used or a short time thereafter.

Abstract: Systems and methods for acquiring and inspecting lens images of ophthalmic lenses using one or more cameras to acquire the images of the lenses in a dry state or a wet state. The images are preprocessed and then inputted into an artificial intelligence network, such as a convolutional neural network (CNN), to analyze and characterize for type of lens defects. The artificial intelligence network identifies defect regions on the images and output defect categories or classifications for each of the images based in part on the defect regions.