Hoya Corporation

Hoya Healthcare Corporation

Hidetoshi Iwamoto

Suguru Imafuku

Soichiro Motono

Yuuichi Yokoyama

Makoto Tsuchiya

Migio Hamano

Hiroyuki Matsushima

Yoko Katsuki

Yoko c/o Hoya Corporation Katsuki

Provided are a process for producing an intraocular lens capable of inhibiting secondary cataract that may occur after the insertion of an intraocular lens and a secondary-cataract-inhibiting intraocular lens obtained by the above process, and the process is for producing a surface-treated intraocular lens, which comprises irradiating the surface of an intraocular lens with active light that works to decompose oxygen molecules to generate ozone and that also works to decompose the ozone to generate active oxygen, in the presence of oxygen, and the lens is a secondary-cataract-inhibiting intraocular lens obtained by the above process.

Process for producing surface-treated intraocular lens and intraocular lens capable of inhibiting secondary cataract

Provided is an intraocular lens that inhibits secondary cataract which occurs after insertion of an intraocular lens and that is free from the adherence and deposition of a protein, etc., to/on the front surface of the lens, and the intraocular lens has an optic portion with a front surface and a back surface, said front surface and said back surface being different from each other in the property of adhering to a protein and satisfying the relationship of the expression (x),PA&#x3c;PA&#x2003;&#x2003;(x)

Intraocular lens and process for producing the same

A (meth)acrylate copolymer obtained by copolymerization of a monomer mixture containing a monomer (A) of the general formula (I),  wherein Ris a hydrogen atom or methyl, Ris a linear or branched alkylene group having 1 to 8 carbon atoms and Y is a single bond or an oxygen atom, a monomer (B) copolymerizable with the monomer (A) and a crosslinking monomer (C).

(Meth)acrylate compound and process for the production thereof, (meth)acrylate copolymer and process for the production of (meth)acrylate copolymer, and soft intraocular lens

Provided are novel pyrazolone compounds which have excellent copolymerizability and undergo no elution in an organic solvent when used for an ophthalmic plastic lens and which have an excellent absorption peak in visible light region and function as a reactive yellow dye.

Pyrazolone compounds and ophthalmic plastic lens using the same

A method for producing moisture-containing soft contact lenses by polymerizing monomers for contact lenses in the presence of a diluent for monomers and substituting the diluent contained in the resulting polymer with an aqueous solution, wherein the diluent is composed of one or more compounds selected from the group consisting of triethylene glycol, diethylene glycol monomethyl ether and triethylene glycol monomethyl ether and a moisture-containing contact lens composed of a copolymer of the following main components, (1) two or more kinds of hydrophilic monomers selected from the group consisting of 2-hydroxyethyl methacrylate, N-vinyl-2-pyrrolidone and N,N-dimethylacrylamide, (2) an alkyl methacrylate and (3) a crosslinkable monomer, and an aqueous solution, which has a moisture content of 50-70% and exhibits a penetration strength of 1100 gf/mm or more. The contact lens of the present invention is optically transparent and exhibit excellent mechanical strength.

Soft contact lens with high moisture content and method for producing

A compound represented by the following formula 1: ##STR1## wherein R.sub.1 is an unsubstituted or substituted benzyl group or unsubstituted or substituted phenyl group, method for producing a copolymer comprising copolymerizing a monomer mixture containing the compound, copolymer for lenses containing a copolymerized component represented by the following formula 2 ##STR2## and a lens consisting of the copolymer. The compound of the formula 1 is a reactive dye exhibiting excellent hydrolysis resistance, good copolymerizability with other comonomers, excellent dyeing property and proper solubility in comonomers.

Reactive dyes and lenses utilizing the same

A soft intraocular lens consisting of a copolymer formed from a perfluorooctylethyloxypropylene (meth)acrylate monomer, a 2-phenylethyl (meth)acrylate monomer, an alkyl (meth)acrylate monomer and a crosslinking monomer as essential components restores its original shape to stabilize itself in a proper period of time, e.g., approximately 20.about.60 seconds, without remaining folded or self-adhering in its optical portion when folded to a small size, inserted into the eye while being held in a folded state and then released from a folding force.

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Tokyo, Japan

Hidetoshi Iwamoto