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.

Aspects of the disclosure provide for a method of designing a lens. Examples of the method include determining a central optic zone of the lens, determining a transition zone of the lens disposed about the central optic zone, determining a landing zone of the lens disposed about the transition zone, and determining an edge lift zone of the lens disposed about the landing zone. Examples of the landing zone of the lens comprise a temporal radius, a nasal radius, a vertical radius, and an inferior radius each with respect to a common point, where at least one of the temporal radius, the nasal radius, the vertical radius, or the inferior radius is not equidistant from the common point with respect to a remainder of the from the common point with respect the a remainder of the temporal radius, the nasal radius, the vertical radius, and the inferior radius.

The invention provides a method for producing photochromic silicone hydrogel (SiHy) contact lenses based on thermal cast-molding technology in a relatively efficient and consistent manner. The method is characterized by selecting a high radical-reactive hydrophilic acrylic monomer while eliminating any low radical-reactive hydrophilic N-vinyl amide monomer in a lens formulation (polymerizable composition), by selecting a weight ratio of low-radical-reactive hydrophilic N-vinyl amide monomer to a high radical-reactive hydrophilic acrylic monomer in a lens formulation if the low radical-reactive hydrophilic N-vinyl amide monomer is needed, and/or by using a relatively high temperature thermal initiator in a lens formulation, to control the lens properties (e.g., water content, elastic modulus, etc.) and lens processability (capability of dry-delensing from molds) of thermally cast-molded SiHy contact lenses while minimizing loss in photochromic ability of resultant SiHy contact lenses.

Ophthalmic lenses are described herein. An example ophthalmic lens may comprise a first surface. The example ophthalmic lens may comprise a second surface disposed opposite the first surface and defining a volume of lens material therebetween. The ophthalmic lens may exhibit a first cylinder power. A difference of the volume of lens material of the ophthalmic lens and a volume of lens material of a comparative lens may be minimized. The comparative lens may consist essentially of the same lens material as the ophthalmic lens and exhibit a second cylinder power different from the first cylinder power.

A method for making a hydrogel, photochromic contact lens including supplying a first lens composition comprising a contact lens monomer and a photochromic material to a front contact lens mold and supplying a second lens composition to said contact lens mold wherein the viscosity of said first composition is at least about 1000 cp greater than the viscosity of said second contact lens composition, and the makeup of said second composition matches the of said first composition to reduce strain between said compositions of the resulting lens.

A contact lens incorporating one or more surface modified zones on the anterior surface of the lens may be utilized to generate a friction driven rotational force when the upper and/or lower eyelids pass over the one or more regions during blinking. A small difference in the coefficient of friction between the modified and unmodified regions of the lens may result in an equivalent rotational force to that of a thickness gradient lens. This small difference in the coefficient of friction produces a means to orient and stabilize the contact lens on eye.

The present invention relates to a siloxane monomer used in the production of a silicone hydrogel lens, a composition for the preparation of a lens containing the same, and a silicone hydrogel lens prepared from the same, wherein the silicone hydrogel lens according to the present invention has a feature of easy release from a component of a mold.

An eye-mountable device is provided that includes electronics encapsulated within a rigid, gas-permeable polymeric material. The eye-mountable device includes an electroactive lens that can be operated to control an overall optical power of the eye-mountable device to restore an amount of visual accommodation of an eye to which the device is mounted. A method for fabricating the eye-mountable device is provided that includes applying an adhesive to secure lenses of the electroactive lens together and to maintain an amount of liquid crystal in the space between the lenses. The rigid, gas-permeable polymeric material can then be formed around the electroactive lens, electronics, or other elements of the eye-mountable device. The rigid, gas-permeable polymeric material can be mountable to a corneal surface of an eye or can be disposed on or within a soft polymeric material that is mountable to the corneal surface of the eye.

The invention provides a material for contact lenses, including a first siloxane macromer shown as formula (I): ##STR00001##
in formula (I), R.sub.1, R.sub.2 and R.sub.3 are C.sub.1-C.sub.4 alkyl groups, R.sub.4 is C.sub.1-C.sub.6 alkyl group, R.sub.5 is C.sub.1-C.sub.4 alkylene group, R.sub.6 is OR.sub.7O or NH, R.sub.7 and R.sub.8 are C.sub.1-C.sub.4 alkylene groups and m is an integer of about 1-2, n is an integer of about 4-80; a second siloxane macromer shown as formula (II): ##STR00002##
in formula (II), R.sub.9, R.sub.10 and R.sub.11 are C.sub.1-C.sub.4 alkyl groups, R.sub.12, R.sub.13 and R.sub.15 are C.sub.1-C.sub.3 alkylene group, R.sub.14 is a residue obtained by removing NCO group from an aliphatic or aromatic diisocyanate, and o is an integer of about 4-80, p is an integer of about 0-1; q is an integer of about 1-20; at least one hydrophilic monomer and an initiator.

The present invention relates to a method of manufacturing a contact lens including the steps of: (i) adding reactive components to a mold, wherein the reactive components comprise (a) at least one hydroxy-containing silicone component having a weight average molecular weight from about 200 to about 15,000 g/mole and (b) at least one mono-ether terminated, mono-methacrylate terminated polyethylene glycol having a weight average molecular weight from about 200 to about 10,000 g/mole; (ii) curing the reactive components within the mold to form the contact lens; and (iii) removing the contact lens from said mold.