A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing no aromatic rings, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from more than 0.05 parts by mass to 2.0 parts by mass, and a viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa.Math.s to 1,000 mPa.Math.s.

A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing no aromatic rings, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from more than 0.05 parts by mass to 2.0 parts by mass, and a viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa.Math.s to 1,000 mPa.Math.s.

An object of the present invention is to provide a novel production method of a poly(ester)carbonate. The present invention relates to a production method of a poly(ester)carbonate, including subjecting a diol and a carbonate ester to a transesterification reaction in the presence of a catalyst, wherein the catalyst comprises aluminum or a compound thereof, and a phosphorus compound.

An object of the present invention is to provide a novel production method of a poly(ester)carbonate. The present invention relates to a production method of a poly(ester)carbonate, including subjecting a diol and a carbonate ester to a transesterification reaction in the presence of a catalyst, wherein the catalyst comprises aluminum or a compound thereof, and a phosphorus compound.

A compound represented by Formula (1) given below. (In the formula, R.sup.1 represents a hydrogen atom or a methyl group, X.sup.1 represents a C.sub.1 to 9 alkylene group, or a C.sub.3 to 6 alkylene group in which at least one hydrogen is replaced with an acryloxy group or a methacryloxy group, l.sup.1 represents an integer from 0 to 3, Q.sup.1 represents a hydrogen atom or Formula (2) given below (In the formula, R.sup.2 represents a hydrogen atom or a methyl group, X.sup.2 represents a C.sub.1 to 9 alkylene group, or a C.sub.3 to 6 alkylene group in which at least one hydrogen is replaced with an acryloxy group or a methacryloxy group, l.sup.2 represents an integer from 0 to 3, and * represents a bonding site), and Q.sup.2 represents a hydrogen atom or Formula (3) given below (In the formula, R.sup.3 represents a hydrogen atom or a methyl group, X.sup.3 represents a C.sub.1 to 9 alkylene group, or a C.sub.3 to 6 alkylene group in which at least one hydrogen is replaced with an acryloxy group or a methacryloxy group, l.sup.3 represents an integer from 0 to 3, and * represents a bonding site).)

A biomedical device is disclosed. The biomedical device includes a polymerization product of a biomedical device-forming mixture containing (a) one or more grafted glycosaminoglycan polymers including a glycosaminoglycan having a polymer backbone and one or more side chains comprising an ethylenically unsaturated reactive-containing residue grafted onto the polymer backbone, and (b) one or more non-silicone biomedical device-forming monomers.

An optical image capturing lenses includes, in order from an object side to an image side, a front lens group, a stop, and a rear lens group. The front lens group includes, in order from the object side to the image side, at least a first lens element and a second lens element. The first lens element has a convex object-side surface and a concave image-side surface. The rear lens group includes, in order from the object side to the image side, at least a third lens element, a fourth lens element, a fifth lens element, and a sixth lens element. The sixth lens element is made of plastic material. The object-side surface and the image-side surface of the sixth lens are aspheric. The sixth lens element has at least one inflection point formed on at least one of the object-side surface and the image-side surface thereof.

The purpose of the present invention is to provide a high temperature/humidity resistant polycarbonate resin without using bisphenol A as a raw material. The present invention relates to a polycarbonate resin comprising the repeating units of formulas (1), (2) and (3), wherein the content of the repeating unit of formula (3) is 5 mol% to 50 mol%, and the refractive index is 1.570 to 1.600. {In formula (1), R.sub.1 and R.sub.2 each represent a hydrogen atom or a C.sub.1-10 hydrocarbon group.} {In formula (3), n ranges from 0 to 8, and the R symbols are each selected from C.sub.1-3 alkyl groups}. ##STR00001##

Described is a silicone hydrogel contact lens having non-uniform morphology. The contact lens may be made from a reactive mixture comprising: a silicone-containing component; a hydrophilic component; a non-reactive polymeric internal wetting agent; and a polymerization initiator, the contact lens having an oxygen permeability of at least about 60 barrers, and wherein the molar ratio in the lens of the polymeric non-reactive internal wetting agent to silicone, without a surface treatment, is greater in the lens's surface than in its bulk.

Method and contact lens (3) for measuring a subject's three dimensional eye movement including torsional movement. A video camera (1) is provided for recording an image of the subject's eye (2). The contact lens (3) is provided for placement over the subject's eye (2). The contact lens (3) comprises one or more markers (3a,3b) that are detectable by the video camera (1) and are positioned at a lateral offset (D) with respect to a central part (3p) of the contact lens (3). The one or more markers (3a,3b) are configured for detecting torsional rotation (R) of the subject's eye (2) around a line of sight axis (C) of the subject's eye (2) by using the video camera (1) to track a position of the one or more markers (3a,3b).