Abstract: A lens wearable in an eye of a user can indicate intraocular pressure of the eye. The wearable lens includes a substrate containing anthocyanins. The substrate is formed by polymerization of a hydrophilic monomer and a hydrated polymer under the effects of a photoinitiator and a cross-linking agent. The anthocyanins in the substrate change color according to the pH of the eye, and the pH of the eye is determined according to the intraocular pressure of the eye.

Abstract: A contact lens for the human eye includes a matrix and polymer nanocapsules mixed in the matrix. The polymer nanocapsule is calculated to decompose by chemical reaction and thereby release oxygen, to prevent corneal hypoxia. A material for making a contact lens is also provided.

Abstract: A colored contact lens includes an iris region made of a first mixed liquid, and the first mixed liquid includes a colored material and a contact lens material. The colored material absorbs and stores light when in a well lit environment and emits lights when in a poorly lit environment or a dark environment. Therefore, when the colored contact lens is located in a well lit environment, light is absorbed and stored, and when the contact lens is in a poorly lit environment or the dark environment light is emitted.

Abstract: A method for making a colorant film includes following steps of mixing a hydrophilic monomer, a vinyl monomer including catechol groups, a cross-linking agent, and an initiator to form a mixture; adding an active pigment and a solvent into the mixture to form a colorant material; printing the colorant material into a mold; and heating or irradiating the colorant material in the mold by ultraviolet light to make the hydrophilic monomer, vinyl monomer with catechol groups, the initiator, and the cross-linking agent to copolymerize. The disclosure also provides a colorant film, and an ophthalmic lens.

Abstract: A method for making a colorant film providing eye care includes following steps of providing a plurality of microcapsules containing hydrogen peroxide aqueous solution; mixing a hydrophilic monomer, a cross-linking agent, and an initiator to form a mixture; mixing the microcapsules, the mixture, a pigment, and a solvent to form a colorant material; printing the colorant material into a mold; and heating or irradiating the colorant material in the mold to copolymerize the hydrophilic monomer, the initiator, and the cross-linking agent. A colorant film, and the manufacture of an ophthalmic lens are also provided.

Abstract: A method for making an ophthalmic lens includes following steps of mixing dopamine methacrylamide, a hydrophilic monomer, a cross-linking agent, and a photoinitiator to form a mixture; feeding the mixture into a mold and exposing the mixture to ultraviolet radiation, to cause the dopamine methacrylamide, the hydrophilic monomer, the photoinitiator, and the cross-linking agent to undergo a polymerization reaction. The disclosure also provides an ophthalmic lens made by above method, and an ophthalmic lens material making for the ophthalmic lens.

Abstract: An eye lens carrying eyebright extracts includes a matrix and a plurality of extracts dispersed in the matrix, the eyebright being released into the eye over a period of time to alleviate common disorders of the eye. Two methods for making the complete eye lens are also provided.

Abstract: An ophthalmic lens includes a matrix and a natural yellow dye dispersed in the matrix. The natural yellow dye includes at least one of lutein and zeaxanthin.