Abstract: To provide an ocular lens capable of securing a stable image in a distance portion and a near portion, and suppressing a generation of blurring or ghosting of the image. A progressive multifocal far and near contact lens is provided, having a distance portion for aiding a far vision, a near portion for aiding a near vision, and an intermediate portion in which power is progressively changed between the distance portion and the near portion, and a power distribution of a lens optical region along a direction of a vertical axis N of the lens optical region is set according to a predetermined function.

Abstract: In surgery of the vitreous body in an eyeball of a human body, a burden on and time of a surgeon is suppressed from being spent, a burden on the eyeball of a patient is greatly reduced, and further, the possibility of a complication after the surgery is also lessened. A holding apparatus, which has eyelid opener portions for pulling and opening upper and lower eyelids, a lens ring for holding a surgical contact lens on the eyeball, and connecting portions for connecting the eyelid opener portions with the lens ring of the surgical contact lens so that the surgical contact lens is held on the eyeball, is set on the eyeball of the patient, which makes it unnecessary to stitch of the lens ring on the eyeball.

Abstract: To provide an ocular lens capable of securing a stable image in a distance portion and a near portion, and suppressing a generation of blurring or ghosting of the image.

Abstract: A storage case having a soft intraocular lens folding function, which has a constitution with excellent reliability and manufacturability, is capable of sterilely storing an intraocular lens produced in a production line without damaging it until a time of surgery, and enables an operator to perform an operation of picking a soft intraocular lens L with an extractor with ease and reliability, is provided. In the storage case having a soft intraocular lens folding function, which includes a base part 10, a movable part 40 and a lid part 70, the aforementioned base part 10 is slidably joined to the aforementioned movable part 40, and the lid part 70 is attachably and detachably fitted therein, thus making it possible to store the lens L sterilely without damaging it, and during a surgery, the lens L can be folded with ease and reliability by pressing a lever portion 42 at the movable part 40.

Abstract: A one-piece intraocular lens having an optic portion and a haptic portion, the optic portion being formed of a copolymer obtained by copolymerization of predetermined amounts of 2-[2-(perfluorooctyl)ethoxy]-1-methylethyl (meth)acrylate, 2-phenylethyl (meth)acrylate, alkyl (meth)acrylate and a crosslinking monomer, the haptic portion being formed of polymethyl methacrylate, a process for the production thereof, and a soft intraocular lens having an optic portion and a haptic portion formed of a soft material, the haptic portion having a bendable portion having specific functions, the one-piece intraocular lens being insertable into an eye through a small incision with the optic portion being bent, the soft intraocular lens permitting the prevention of the deformation of the soft optic portion caused by the shrink of a capsule when the soft intraocular lens is inserted into an eye.

Abstract: A material for contact lenses having excellent flexibility and oxygen permeability are disclosed. The material comprises a copolymer essentially comprising a siloxane macromer of component (A) which has the number-average molecular weight of from about 1,000 to 10,000 and is represented by the general formula (I), a water-insoluble monoolefin monomer of component (B), and a water-soluble monoolefin monomer of component (C).

Abstract: A one-piece intraocular lens having an optic portion and a haptic portion, the optic portion being formed of a copolymer obtained by copolymerization of predetermined amounts of 2-[2-(perfluorooctyl)ethoxy]-1-methylethyl (meth)acrylate, 2-phenylethyl (meth)acrylate, alkyl (meth)acrylate and a crosslinking monomer, the haptic portion being formed of polymethyl methacrylate, a process for the production thereof, and a soft intraocular lens having an optic portion and a haptic portion formed of a soft material, the haptic portion having a bendable portion having specific functions, the one-piece intraocular lens being insertable into an eye through a small incision with the optic portion being bent, the soft intraocular lens permitting the prevention of the deformation of the soft optic portion caused by the shrink of a capsule when the soft intraocular lens is inserted into an eye.

Abstract: A soft intraocular lens-folding device comprises a movable member 1 and a base member 2. The movable member 1 comprises an elastically bendable pair of legs 12a, 12b, and a common base 11 for connecting this pair of legs 12a, 12b. At the tips of the pair of legs 12a, 12b there is disposed lens-receiving portions 13a, 13b, and wall portions 14a, 14b. In the lens-receiving portions 13a, 13b, a soft intraocular lens 3 is set astride both legs. The wall portions 14a, 14b have the function of clamping a soft intraocular lens 3 set in the lens-receiving portions 13a, 13b. The bass member 2 comprises a slide groove portion 21. This slide groove portion 21 is formed so as to allow the tips of the pair of legs 12a, 12b to penetrate and elide through, and, in addition, to narrow the gap of the pair of legs 12a, 12b in accordance with the extent of movement thereof.

Abstract: Gas-permeable hard contact lenses are produced by hot press-stretching a crosslined gas-permeable hard contact lens material and then machining the press-stretched material. The gas-permeable hard contact lenses are formed from a crosslinked gas permeable hard contact lens material which is hot press-stretched to have a compression ration of 5 to 50% and a compression-flexure fracture strength of 300 to 1,500 g. Efficiently produced gas-permeable hard contact lenses are produced which are free of optical strains, excellent in transparency, small internal stress and comfortable to wear with improved durability strength.

Abstract: 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.