A manufacturing method for a mold die comprising: making design data for a molding surface based on predetermined prescription information; creating the molding surface in accordance with the design data; specifying error amounts at first and second corresponding points defined on the created molding surface respectively corresponding first and second reference points; defining a first correction surface based on an error amount specified at the first corresponding point; of defining a second correction surface based on the first correction surface and an error amount specified at the second corresponding point, wherein the second correction surface has no power at the first corresponding point; combining a design surface by the design data, the first correction surface and the second correction surface, and corrects the design data based on combined data after the combining; and creating the molding surface in accordance with the corrected design data.

There is provided a contact lens (60) which is produced by cast molding. The cast molding is achieved by the use of an anterior face mold insert (30) which has a cap (24) with a domed surface (26) and a body (10). The domed surface has provision for a distance vision segment (31) and a reading segment (32) separated by a demarcation (33). Further, the cap (24) has a cutaway portion (20) for producing a lower ledge and the body (10) has a projection (18) for producing a lower truncation in the resultant lens. Means is also described for forming a posterior face of the contact lens (60).

A mold for a plastic lens that arranges an insert member inside a cavity formed between a pair of halved molds, injects and fills molten raw material resin to mold a plastic lens having a predetermined shape, integrally with the insert member. The insert member is arranged on a molding surface on one of the halved molds, a notch to be engaged with a positioning tab formed at a periphery of the insert member is engraved on one parting surface of the halved mold, overlapping with a gate position. Positioning of the insert member is performed by engaging the positioning tab with the notch. With this configuration, in molding a plastic lens having an insert member by injection molding including insert molding, positioning of the insert member is performed at the gate position without deteriorating the quality of a molded product and without increasing the load of post-processing after molding.

An accommodating contact lens comprises a control device, which comprises one or more eyelid engagement structures. The eyelid engagement structures are configured to move with the eyelid relative to the contact lens. The eyelid engagement structure is coupled to the eyelid and to the accommodating contact lens, which may comprise a fluidic module having inner and outer fluid reservoirs. The eyelid engagement structure is configured to respond to the narrowing or widening of the eyelid fissure, moving a fluid in or out of the inner reservoir to accommodate near or far vision.

A method to manufacture an accommodating contacting lens is provided. A soft contact lens material precursor is placed into a container and cured. The cured contact lens material is machined to form an intermediate surface over which an accommodating lens module is placed. Further precursor is placed onto the intermediate surface and surrounding the lens module. This further precursor is cured. Afterwards, the surface of the cured precursor or soft contact lens material is machined to form a first surface of the accommodating contact lens. Then, the opposite surface is machined to form a second surface of the accommodating contact lens, thereby forming the accommodating contact lens with the module disposed in the interior. The first and second surfaces may be a posterior and anterior surface, respectively, of the accommodating contact lens.

The stabilized contact lens methods and apparatus disclosed herein provide improved stabilization of a contact lens placed on a cornea of an eye. The contact lens comprises stabilization zones that allow the lens to repeatedly and consistently orient on the cornea such that a sensing zone located on the lower portion of the lens is located inferiorly to engage the lower eyelid. The stabilized contact lens can provide a lower pressure sensing zone with decreased thickness for pressure or other sensing related to the lower eyelid. The decreased thickness has the advantage of improving coupling between forces from an eyelid and a lower chamber of a fluidic module. The improved coupling allows increased amounts of fluid to move between the lower chamber and an upper optical chamber coupled to the lower chamber, such that the upper chamber can increase curvature and optical power in response to pressures of the eyelid.

A method of providing refractive microstructures on a surface of a spectacle lens body by an additive manufacturing process is provided, in which the refractive microstructures are formed by applying and curing a curable material. The process includes forming a layer of a first liquid or viscous curable material and an additional amount of the first curable material or an amount of a second liquid or viscous curable material at locations at which the refractive microstructures shall be formed before curing or pinning the at least one first curable material. Protrusions formed by the additional first curable material or the second curable material are levelled out by material transport processes within the liquid or viscous material in the layer of the at least one curable material. In addition, a spectacle lens with refractive microstructures is provided.

The present disclosure includes optical articles comprising a film layer that has first and second film surfaces and is embossed such that the first film surface defines a plurality of concave optical elements and the second film surface defines a plurality of convex optical elements. The present optical articles can include one or more optical layers coupled to the film layer. Each of the optical layer(s) can encapsulate the concave optical elements or the convex optical elements.

An accommodating intraocular lens comprises a first lens component, a second lens component, and an adhesive between portions of the two lens components. The cured adhesive bonds the lens components to form a fluid chamber. The lens components are bonded to one another along a seam which extends circumferentially along at least a portion of the lens components. The lens components may comprise the same polymer material. The cured adhesive also comprises the polymer or a prepolymer of the polymer to provide increased strength. The polymer is hydratable such that the lens components and the cured adhesive therebetween can swell together to inhibit stresses between the lens components and the cured adhesive.

The present invention proposes a polymer composition of manufacturing ophthalmic lens by polymerization of polymerizable composition wherein the shrinkage phenomenon is minimized. The polymerizable composition comprised two different categories of monomers which are able during crosslinking to control and limit said chemical shrinkage. The present invention comprises also ophthalmic lens obtained from said polymer composition using a manufacturing process of casting or additive manufacturing.