The invention provides a method for producing coated silicone hydrogel contact lenses in a cost-effective manner. The method comprises treating the molding surfaces of polypropylene lens molds (or other hydrophobic plastic molds) with a vacuum UV or a corona plasma to increase the surface energies of the molding surfaces of the lens molds, cast-molding a silicone hydrogel lens formulation containing a relatively small amount of at least one carboxyl-containing vinylic monomer in the treated lens molds, and heating resultant cast-molded silicone hydrogel contact lenses in an aqueous coating solution comprising a water-soluble and thermally crosslinkable polymeric material to form a coated silicone hydrogel contact lens comprising a bulk silicone hydrogel material and a hydrogel layer covalently attached onto the bulk silicone hydrogel material.

A method for manufacturing an ophthalmic lens includes: providing a first precursor and a mold, putting the first precursor in a female die of the mold, exposing the first precursor to ultraviolet radiation, thereby receiving a first gel matrix; the first gel matrix comprising an iris region; providing a colored ink layer, forming the colored ink layer on the iris region, exposing the colored ink layer to ultraviolet radiation to receive a colored film; providing a second precursor and forms the second precursor on the color layer, covering a male die of the mold on the second precursor, exposing the mold to ultraviolet radiation to receive a second gel precursor; the colored film is inset between the first gel matrix and the second gel precursor; and releasing the mold to receive the ophthalmic lens.

Methods for making ophthalmic lenses are generally discussed herein with particular discussions extended to plastic injection molded ophthalmic lens molds that are machined or lens buttons located on the injection molds that are machined. The machine process can include setting a lens axis of the ophthalmic lens and machining a ballast that is aligned to a major axis of a toric zone.

A contact lens comprises a hydrogel lens body and a non-expandable object embedded within the hydrogel lens body. The surface energy of the non-expandable object and the modulus of the hydrogel lens body are selected so as to reduce distortion during hydration of the hydrogel.

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.

The invention is related to a method for producing silicone hydrogel contact lenses with a stable lubricious hydrogel coating thereon providing a low surface friction. A method of the invention comprises forming a plasma-reactive hydrophilic polymer hybrid base coating having reactive functional groups on a silicone hydrogel contact lens and heating the silicone hydrogel contact lens with the hybrid base coating in an aqueous solution of a water-soluble and thermally crosslinkable hydrophilic polymeric material to form a stable lubricious hydrogel coating thereon.

An eye contact lens includes a main body and a water locking structure. The main body includes a front surface, a rear surface and an annular side surface connecting the front surface and the rear surface, the front surface and the rear surface were substantially spherical surfaces. The water locking structure includes a plurality of water locking sheets. The plurality of water locking sheets in the main body being sequentially stacked, and forms many water locking layers, each water locking layer comprises a plurality of parallel rows, each row comprises a plurality of single water locking sheet arranging apart.

The invention is related to a contact lens, especially a SiHy contact lens, which comprises a lens bulk material covered with an outer surface hydrogel layer thereon and has a posterior surface and an opposite anterior surface. The outer surface hydrogel layer consists of an anterior outer hydrogel layer and a posterior outer hydrogel layer. A contact lens of the invention is characterized by having a difference in surface softness between its poterior (BC) and anterior (FC) surfaces.

A method of manufacturing a contact lens 110 is disclosed. The method comprises manufacturing a rod of lens material 101, the rod 101 containing a plurality of electronic components 102 spaced apart along its length, separating the rod 101 into a plurality of lens blanks 106, each lens blank 106 containing at least one of said electronic components 102, and machining the front and/or back surface of a lens blank 106 to produce a contact lens 110 containing the at least one electronic component 102.

The invention is generally related to colored contact lenses which comprise a hydrogel lens body having an opaque color image therein and/or thereon and a durable lubricious coating thereon. The coating comprises an anchoring layer of a polyanionic polymer having carboxyl groups and a hydrogel layer which is derived from a hydrophilic polymeric material having azetidinium groups and is covalently attached onto the anchoring layer of the polyanionic polymer through linkages each formed between one carboxyl group and one azetidinium groups. The colored contact lens has a surface lubricity better than the lubricity of the non-silicone hydrogel lens body and a friction rating of about 2 or lower after 7 cycles of manual rubbing.