Abstract: An insertion device for an intraocular lens is disclosed which can prevent leakage of a liquid in the device and can house and store a lens as well as the liquid. The insertion device includes a main body including a lens housing portion that houses the lens and an insertion cylindrical portion that feeds the lens into an eye, a pushing shaft that moves the lens from the lens housing portion in the front end direction to push out the lens into the eye through the insertion cylindrical portion, and a lens holding member that holds the lens, and is placed in the lens housing portion. The lens housing portion has a shape that receives insertion of the lens holding member from the rear.

Abstract: An insertion device is used to deform a deformable intraocular lens to a reduced size and insert the deformed lens into an eye through an insertion tube. The insertion device includes a push rod for pushing and inserting the lens into the eye, and a posture control member disengagably engaged with a tip end portion of the push rod. The posture control member prevents deflection of the push rod from a center axis. The engagement between the posture control member and the push rod is broken when the push rod arrives at a predetermined position during a step of advancing the push rod.

Abstract: An intraocular-lens insertion device is adapted to deform a deformable intraocular lens into a smaller size and insert the intraocular lens into an eye via an insertion tube. An intraocular-lens guide is provided on the inner surface of the insertion tube. The guide may be a rail-shaped projection or a groove, which extends parallel to a direction along which the intraocular lens is pushed out. A stress release structure is provided on the insertion tube in order to release stress of the intraocular lens produced due to deformation thereof. Moreover, a frictional-resistance increasing structure is provided on the inner surface of the insertion tube to be located in the vicinity of the stress release structure. The frictional-resistance increasing structure increases frictional resistance between the inner surface of the insertion tube and the intraocular lens. The frictional-resistance increasing structure may be a roughened surface which completely or partially covers the inner surface of the insertion tube.

Abstract: In an insertion device for deforming a deformable intraocular lens to a smaller size and inserting the intraocular lens into an eye via an insertion tube, a slit is formed in an insertion end portion of the insertion tube, and cut surfaces of the slit and at least the inner wall surface of the insertion end portion are connected by curved surfaces.

Abstract: An insertion device for an intraocular lens includes a lens-holding section having a cavity for accommodating an intraocular lens, a deforming section for deforming the lens to a reduced size, an insertion tube through which the deformed lens is inserted into an eye, a pusher mechanism for pushing and inserting the lens into the eye, and a lens-moving mechanism for moving the lens from a standby position to an insertion position at which the pusher mechanism can push and insert the lens into the eye. A lubricant is injected into the interior of the insertion tube and/or the cavity of the lens-holding section for smooth insertion of the lens. The insertion device has an indicating mark for indicating quantity of the injected lubricant. Further, the insertion device includes an erroneous operation prevention member for preventing accidental operation of the lens-moving mechanism.

Abstract: The present invention provides lenses for eyes having visible light transmission properties near to those of human crystalline lenses, particularly coloring techniques effective for soft lenses for eyes. The present invention is a yellow dye capable of chemical bonding to a silicone which is a material of the intraocular lens or capable of copolymerizing with a radical polymerizable monomer which is a material of the intraocular lens.

Abstract: An insertion system for an intraocular lens having a deformable optical portion and loop-shaped support portions for supporting the optical portion within an eye includes a holding member for holding the intraocular lens at a standby position in a state in which no stress acts on the optical portion of the lens; a deforming member for deforming the lens to a reduced size; an insertion tube through which the deformed lens is inserted into the eye; a pusher mechanism having a push rod for pushing and inserting the lens into the eye; and a lens moving mechanism for moving the lens from the standby position to an insertion position at which the pusher mechanism can push and insert the lens into the eye. When the lens is moved to the insertion position, the optical portion and the support portions of the lens are placed in different spaces in order to fix the positional relationship between the optical portion and the support portions of the lens.

Abstract: An insertion device can deform a deformable intraocular lens into a smaller size and insert the intraocular lens into the eye. The insertion device includes a device body; an insertion tube attached to a front end of the device body and adapted to be inserted into the eye; and a push rod axially movable within the device body and the insertion tube and adapted to insert the intraocular lens into the eye when advanced. A drive member is rotatably provided at a rear end of the push rod. A motion conversion mechanism is disposed between the device body and the drive member and is adapted to axially move the drive member, upon rotation of the drive member, in order to axially move the push rod. A push member is provided at the rear end of the push rod and projects rearward from the drive member.

Abstract: The present invention provides lenses for eyes having visible light transmission properties near to those of human crystalline lenses, particularly coloring techniques effective for soft lenses for eyes.

Abstract: An insertion system for an intraocular lens includes an intraocular lens having a deformable optical portion, a lens package for storing the lens in a state in which no stress acts on the optical portion of the lens, a deforming member for deforming the lens to a reduced size, and an insertion device. The insertion device has an insertion tube through which the deformed lens is inserted into an eye, and a pusher mechanism for pushing and inserting the lens into the eye. The lens package has a function for attachment to the insertion device and a function for acting as a portion of the mechanism to be provided by the insertion device.

Abstract: An insertion device for inserting a deformable intraocular lens into the eye. The insertion device has a an enclosing member that is attached to the body of the insertion device and that has two hinge portions at a lens receiving section. Further, a retainer member is fitted onto the enclosing member and a holder fitted onto the body. The deformable intraocular lens is placed in the lens receiving section after the enclosing member is opened. When the holder is retracted, the intraocular lens is deformed by a tapered inner wall portion formed at a the tip end of the holder, so that the exterior size of the lens is reduced. Subsequently, a push rod supported by the body is advanced in order to insert the lens into the eye.

Abstract: An insertion device for inserting a deformable intraocular lens into the eye. The insertion device has a an enclosing member that is attached to the body of the insertion device and that has two hinge portions at a lens receiving section. Further, a retainer member is fitted onto the enclosing member and a holder fitted onto the body. The deformable intraocular lens is placed in the lens receiving section after the enclosing member is opened. When the holder is retracted, the intraocular lens is deformed by a tapered inner wall portion formed at a the tip end of the holder, so that the exterior size of the lens is reduced. Subsequently, a push rod supported by the body is advanced in order to insert the lens into the eye.

Abstract: An ophthalmologic knife includes a handle, and a blade having a base portion fixed to the tip of the handle and an incision-forming portion integrally formed with the base portion. The entire portion of the blade or at least part of the incision-forming portion which is inserted into the cornea of an eyeball has an arcuate cross section. By using the ophthalmologic knife, a three-dimensional incision having an arcuate cross section is formed in the cornea or the like. When a three-dimensional object having a cylindrical cross section or the like is inserted into the incision, the convex portion surrounded by the incision is bent toward the inside of the eyeball. This allows smooth insertion of the object.

Abstract: A deformable intraocular lens which does not deviate within the eye and is free from strains or deformation even when the tails of the supports are deformed by external force such as compression.The lens according to the invention has a deformable optical part which is made of an elastic material, and a plurality of supports which are made of a material different from that of the optical part and which are bonded to the optical part, each of the supports having, in a serial integration, a flexible tail, a rigid base which cuts off the transmission of stress generated by the deformation of the tail to the optical part, and an anchor which binds the support to the optical part, wherein the transitional part of the tail and the base is disposed outside the optical part. With this structure, even when the tails of the supports are deformed by external force, the tails themselves absorb the deformation stress and the rigid bases cut off transmission of the stress to the optical part.

Abstract: A deformable intraocular lens which does not deviate within the eye and is free from strains or deformation even when the tails of the supports are deformed by external force such as compression. The lens according to the invention has a deformable optical part which is made of an elastic material, and a plurality of supports which are made of a material different from that of the optical part and which are bonded to the optical part, each of the supports having, in a serial integration, a flexible tail, a rigid base which cuts off the transmission of stress generated by the deformation of the tail to the optical part, and an anchor which binds the support to the optical part, wherein the transitional part of the tail and the base is disposed outside the optical part. With this structure, even when the tails of the supports are deformed by external force, the tails themselves absorb the deformation stress and the rigid bases cut off transmission of the stress to the optical part.

Abstract: A deformable intraocular lens which can be inserted in the eye through a smaller incision by being deformed to have a smaller shape. The lens according to the invention has a deformable optical part which is made of an elastic material, the optical part having a lens portion and a peripheral portion surrounding the lens portion. The peripheral portion is thinner than the center of the lens portion. A plurality of supports are made of a flexible material different from the material of the optical part. Each support has an anchor embedded in the optical part for bonding the support to the optical part. A plurality of reinforcing sections having a thickness larger than the peripheral portion of the optical part are provided at a plurality of positions on the peripheral portion of the optical part or in the proximity thereof. The anchors of the supports are embedded in the reinforcing section.

Abstract: An inserting device for inserting an intraocular lens into the eye. An interference preventing portion is formed in a lens holding section which is provided with an opening/closing mechanism and is a part of a holder member attached to a body. An intraocular lens is held by the lens holding section such that its optical part made of an elastic material is deformed into a smaller shape. The tip portion of a support which is made of a different material from that of the optical part and which extends backward the optical part is received by the interference preventions portion. When a pusher rod of a pusher mechanism attached to the body is advanced, only the optical part is pushed by the pusher rod without causing interference between the pusher rod and the tip portion of the support, thereby inserting the intraocular lens into the eye.

Abstract: An insertion system for an intraocular lens includes an intraocular lens having a deformable optical portion, a lens package for storing the lens in a state in which no stress acts on the optical portion of the lens, a deforming member for deforming the lens to a reduced size, and an insertion device. The insertion device has an insertion tube through which the deformed lens is inserted into an eye, and a pusher mechanism for pushing and inserting the lens into the eye. The lens package has a function for attachment to the insertion device and a function for acting as a portion of the mechanism to be provided by the insertion device.