A surface-modified contact lens, having a surface contact angle hysteresis of less than 15°, includes a lens body and a first surface modification layer disposed on a surface of the lens body. The first surface modification layer comprises a first reactive hydrophilic polymer. The surface of the lens body has a first functional group or a second functional group, and the first reactive hydrophilic polymer has a third functional group or a fourth functional group. A first covalent cross-link bond is formed between the surface of the lens body and the first surface modification layer. The first covalent cross-link bond is formed by reacting the first functional group or the second functional group of the surface of the lens body with the third functional group or the fourth functional group of the first reactive hydrophilic polymer.

The invention is directed to a contact lens for color blindness, comprising: a pupil section, a generally annular iris section surrounding the pupil section, wherein the pupil section comprising a dye containing layer which is enclosed between two clear layers so that the dye cannot leach out, wherein the dye filters out the specific wavelength bands between 545 nm and 575 nm to correct color vision blindness; wherein the iris section having a colored, printed, opaque, intermittent pattern, said pattern comprising: an annular pattern of a color and at least at least one other colored patterns extending across a portion of the iris section selected from a group of patterns consisting of outermost starburst pattern, outer starburst pattern and inner starburst pattern

A method of manufacturing a colored contact lens including the steps of providing a transparent contact lens having a pupil section and an iris section, the iris section surrounding the pupil section and applying a colorant to the surface of the contact lens. The colorant is applied to the contact lens as an amorphous pattern and covers an effective amount of the iris section of the same. The amorphous pattern provides a lens capable of changing the apparent color of the iris of a person wearing the lens while imparting a very natural appearance.

A device for varyingly irradiating by means of ray shaping is described. Furthermore, a method of manufacturing a structure made of a curable material by means of molding is described. In a first step of the method, a molding tool is arranged above a surface such that the curable material abuts on the surface and a molding surface, facing the surface, of the molding tool in a region between the molding tool and the surface and such that further curable material may continue to flow to the region. In a second step, the curable material is irradiated in the region in a locally varying manner such that the ray experiences ray shaping in an optical channel and such that the curable material cures at different speeds in a laterally varying manner.

An apparatus and method for forming a contact lens includes submerging a convex optical quality surface of a forming optic in a reservoir containing Lens Reactive Mixture, projecting a first Actinic Radiation with a first wavelength through pre-selected regions of the forming optic that correspond to increased thickness in the lens to be formed for selectively polymerize the Lens Reactive Mixture on a Voxel by Voxel basis; projecting a second Actinic Radiation with a different wavelength through the entire forming optic to selectively polymerize the Lens Reactive Mixture on a Voxel by Voxel basis, removing the forming optic and polymerized Lens Reactive Mixture from the reservoir and applying a Fixing Radiation to form the contact lens.

Disclosed in this specification is a process for manufacturing a thermochromic contact lens. The process includes (1) selecting a photoinitiator that absorbs at a first wavelength and at least one thermochromic dye that displays substantial absorption at the first wavelength when the dye is at a first temperature and exhibits at least an 80% reduction in absorbance at the first wavelength at a second temperature, (2) maintaining the reaction mixture at the second temperature and (3) providing cure light that includes the first wavelength.

A method of manufacturing of an astigmatic contact lens having a toric portion and a ballast portion such that said ballast portion causes the toric portion of the contact lens to properly orient in the eye of the wearer. The toric lenses are manufactured by an effective process control method for cylinder axis angle in toric lens production by modifying the target cylinder angle for mold rotation by eliminating the accumulative cylinder axis error from all previous steps including tool making, tool assembly, and molding. The amount modifying the target angle is determined by accurately determine the true cylinder axis on the corresponding mold by using a high-resolution interferometer, such as FISBA FS10M or equivalent models from Trioptics μShape® vertical series.

Provided are ink compositions for making cosmetic contact lenses, as well as cosmetic contact lenses and methods for their preparation and use. The ink composition comprises: (a) a colorant; (b) a hydrophilic polymer; and (c) a binder polymer comprising a triblock polymer of formula: [A]-[B]-[C], wherein [A], [B] and [C] are as described herein.

Provided are ink compositions for making cosmetic contact lenses, as well as cosmetic contact lenses and methods for their preparation and use. The ink composition comprises: (a) a colorant; and (b) a nonreactive hydrophilic polymer.

Ophthalmic lenses and methods of manufacture thereof are disclosed. The ophthalmic lenses include metasurface features that define a metasurface array on a lens body. The metasurface array can be tuned to modify an optical property, such as glare reduction, of the ophthalmic lens using an arrangement of metasurface building elements dimensioned from an optical wavelength, including being dimensioned smaller than an optical wavelength. The ophthalmic lenses can be subject to physical manipulation, including rolling or other folding during an installation procedure, and as such, the modified optical property induced by the metasurface array can be maintained after such manipulation. The ophthalmic lenses can be formed using a molding process, in which the metasurface array is associated with a non-solid material and formed into a lens shape with the material.