JP2627736B1 - Intraocular lens - Google Patents

Abstract

Kind Code: A1 An improved intraocular lens structure having a deformable optical area component and having a tactile portion having a fixation support within the optical area portion. An improved intraocular lens structure for surgical mounting in an eye includes an optical region portion substantially centered relative to an integral outer haptic portion, the optical region portion comprising:
By compressing, rolling, bending or stretching this area, the lens is deformed to a diameter of 80% or less of the cross-sectional diameter of the stress-free lens, and when implanted into the eye, has its initial shape, dimensions and An intraocular lens structure capable of returning to a fixed focal length, wherein the haptic portion includes a fixation support within the optical region portion, and the haptic portion includes about 50 to about 115 g.
The present invention provides an improved intraocular lens structure having a tear strength in the range of tensile force.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an intraocular lens.

[0002]

BACKGROUND OF THE INVENTION Intraocular lenses have gained widespread popularity in replacing the human lens after various cataract removal surgeries. The human lens is generally known to be a transparent structure having a thickness of about 5 mm and a diameter of about 9 mm. These lenses are suspended behind the iris by zonules connecting to the ciliary body. The capsular bag surrounds these lenses, with the anterior portion of the capsular bag commonly known as the anterior capsule and the posterior portion commonly known as the posterior capsule.

[0003] Many surgical methods have been developed for cataract removal in which the lens is removed from the eye and replaced with an intraocular lens. Lens extraction is generally categorized as intracapsular (removing the lens with the lens capsule) and extracapsular (removing the anterior capsule with the lens and leaving the posterior capsule intact). Since Ridley first implanted an intraocular lens around 1949, the problems associated with cataract (lens) extraction and intraocular lens implantation have received much attention from ophthalmic surgeons.

[0004] A variety of intraocular lenses have been proposed and many suitable surgical techniques have been developed to reduce patient discomfort and post-operative complications. In this regard,
N. Pseudohuacos by Jatsufe et al .; P. Choice's "History of Intraocular Transplantation" (Anals of Ophthalmology, October 1973); February 2, 1981
U.S. Patent No. 4,251,8 to Anise, issued on April 4
87; Kelman U.S. Pat. No. 4,092,743 issued Nov. 8, 1977; D. "Comparison of Flexible Posterior Ventricular Implants";"Simkoe Posterior Lens" (Circo, Inc., 1980); Thomas R., the inventor. U.S. Patent Application Ser. No. 346,105 filed on Feb. 15, 1982, filed by Mazotsuko, entitled "Deformable Intraocular Lens Structure and Implantation Method and Apparatus";
See U.S. Pat. No. 400,665, filed Jul. 22, 982, entitled "Improved Fixation for Intraocular Lens Structures," both of which are assigned to the assignee of the present invention. And these disclosures are incorporated herein by reference.

[0005] Conventional fixation methods for locating and securing the intraocular lens within the eye generally include attaching the intraocular lens to the iris, for example, using sutures, or supporting the tactile flange and suturing the intraocular without the suture. It consists of holding the lens in place.

US Pat. No. 4,056,855 to Kelman, issued Nov. 8, 1977, describes an intraocular lens and a method of implanting the same through an incision.
It is suitable for independently introducing each of the lens member and the supporting wire, that is, the wire, through a small incision in the eye with the wire being disassembled first. Kerman lens support wire,
That is, the wire has a base suitable for fitting and mounting behind the iris of the eye, and further comprising a pair of resilient lenses protruding from the pupil forward of the iris, with the lens housed between them and the leg It is suitable for elastically opening the part to fit into a predetermined position, positioning both parts in the eye, and thus mounting the intraocular lens at a predetermined position in front of the eye for use.

US Pat. No. 4,118,808, issued on Oct. 10, 1978 to Polar, discloses, as one example, a peripheral groove and a one-piece formed therein for permanent assembly by resilient snap action into the groove. A rim of an intraocular lens having an objective mounting adapter is disclosed. The adapter can be a circumferentially linked structure formed from a single piece "blank". In an unstressed condition, the arc has a curvature that matches the curvature of the groove, and is preferably located at a portion displaced slightly radially inward with respect to the groove circle. The arc expands outwardly against the softening action of the loop to allow for mounting of the arc in the groove and resilient snap retention. The assemblage can then be sterilized and implanted into the eye.

[0008] The prior art intraocular lens structures according to Polar and Kelman propose that the intraocular lens be held in place by a plurality of contacts (setting members) that are fixed and incorporated into the eye. However, these surgical procedures require significant skill to correctly place the lens structure and create the assembly, and an unskilled surgeon will injure irreparable eye tissue, such as the iris. Further, if the incorporated lens (optical element) and tactile part (setting member) are damaged, the disassembly may cause a tear in the eye tissue or displace the lens from its predetermined position. In any surgery, the number of operations required to fix the lens in the eye increases, resulting in increased surgical trauma to the eye. In addition, haptic components in conventional non-suturing lenses can damage ocular tissue during intraocular surgical manipulation of the lens.

US Patent No. 3,991,42 to Fromm
No. 6 and Hartstein U.S. Pat.
No. 370 teaches an iris engagement and fixation method without sutures, and U.S. Pat. No. 4,251,88 to Anise.
No. 7 and Simkoye teach a sutureless fixation scheme using a wide curved flexible support loop haptic (setting member). Unfortunately, the iris engagement scheme results in relatively significant trauma to the iris, with consequent post-operative complications. Recent known approaches to achieving fixation with little or no trauma to the iris can be displaced when relatively small tears accumulate in the capsular bag. These tears often occur and can occur during cataract removal or lens insertion.

A great variety of haptic fixation accessories for the intraocular lens structure are provided for improving the fixation of the optic area (optical element) of the intraocular lens with specific implantation techniques and for the specific dimensions of the surgical procedure involved. And is being developed for transplantation. For example, conventionally, intraocular lenses have fixed accessories having a compressible internal support member, integral and non-integral fixation accessories, angled compressible fixed accessories having an internal support member, A peripheral support ring and several components to be mentioned are provided. Similarly, many types of optical area portions for an intraocular lens structure provide the appropriate optical properties, i.e., diopter of the lens, appropriate optical finish, specific sizing, etc., and the appropriate optical characteristics for the patient's human lens. It has been developed to provide exchange or correction features.

Conventional tactile (set member) designs for intraocular lens structures generally require a second operation apart from molding or other processing of the optical area portion (optical element) of the intraocular lens. Typically, heat fixation is required to fix the haptic portion (setting member) to the optics of the intraocular lens. In this regard, the optical element may be molded from a hard material, such as PMMA, machined in a separate operation to remove burrs, and provide a grid portion for receiving the setting member. One preferred material for processing conventional setting members is polypropylene, which is typically thermally cured to mold the polypropylene material at a temperature of about 225 ° F and below the plastic transition temperature of the polypropylene material. I do. After the conventional setting member has been thermally cured, it is attached to the optical element by, for example, temporary fusion, and the polypropylene is fixed to the lattice portion of the optical element.

One disadvantage of the above-described conventional intraocular lens structures is that the polypropylene setting member is processed in a limited number of shapes due to its relatively low temperature dependence, and polypropylene is generally extruded into a round cross-section. Is to be processed. In addition, due to the relatively low temperature constraints of the polypropylene setting member, assembled conventional intraocular lens structures made of these materials typically have autoclaving temperatures in the range of about 240 ° F. to 250 ° F. Fifteen
Autoclave processing that requires an autoclave pressure up to atmospheric pressure cannot be easily performed. As mentioned above,
Such temperature ranges and pressures destroy the heat set shape of the polypropylene haptic.

[0013] Thus, those skilled in the art will appreciate that the surgeon has the option of assembling the prescription lens combination, ie, the particular optics and the particular configuration of the setting member, and has been improved so that it can be tailored to the needs of the individual patient. It has been recognized that an intraocular lens structure is highly desired. further,
One skilled in the art can conveniently construct an intraocular lens structure that can be autoclaved and has an integral setting member to cause traumatic ocular tissue or displace the intraocular lens from a predetermined position. Minimizing the risk of disassembly of the optical element and the setting member. It has been recognized that an improved intraocular lens assembly is highly desirable.

[0014]

SUMMARY OF THE INVENTION The present invention relates to an improved intraocular lens for surgical implantation in the eye, the intraocular lens adapted to be inserted into the eye via an incision,
A deformable optical element having a periphery, and two setting members for stationaryly fixing the optical element in the eye,
One end of each of the setting members is arranged at a predetermined position in the eye, the two setting members, and two anchors attached near the periphery of the optical element,
The anchors are spaced apart from each other and are fixed to the other end of each of the setting members, and at least one of the anchors has an arcuate shape and extends along the periphery of the optical element. And the two anchors are arranged at symmetrical positions about the center of the optical element. In a presently preferred embodiment, the haptic portion, or setting member, is constructed of a material having a relatively high temperature resistance sufficient to withstand typical autoclave temperatures and pressures, and can be processed in many types of processing shapes. it can. Particularly suitable for this type of setting member is a polymer material, ie, polyimide.

The setting member of the intraocular lens structure according to the invention improves the fixation of the optics of the intraocular lens by means of a specific implantation technique and has a prescription dimension for the surgical procedure involved and an arbitrary shape for implantation. Can be. For example, the setting member may be provided with a fixing accessory having a compressible internal support member, integral and non-integral fixing accessories, an angled compressible fixing accessory having an internal support member, and the like.

Similarly, many types of optical elements can be used in the unique intraocular lens structure assembly according to the present invention. One suitable optical zone portion is processed from a silicone material to form a deformable optical zone portion. More particularly, the deformable optical element of the preferred intraocular lens structure may be compressed, rolled, bent or stretched to 80% or less of the cross-sectional diameter of the lens upon insertion of the optical element into the eye. It has memory characteristics that allow it to return to its initial shape, dimensions and constant focal length after implantation into the eye, thus providing a safer, more convenient and comfortable surgical procedure. . Thus, preferred intraocular lens structures according to the present invention are capable of making and implanting smaller incisions into ocular tissue than were possible with similarly sized rigid optics.

The optical elements of the unique intraocular lens structure can be colored and tinted, can have occlusions, or can have one or more working layers.
For example, any suitable optical element shape such as a biconvex shape, a flat-concave shape, a biconcave shape, and a concavo-convex shape is included in the scope of the present invention.

The unique intraocular lens structure according to the present invention is:
The setting member can be integrated with the optical element. This minimizes the possibility that the optical element and the setting member may be disassembled and cause trauma to the eye tissue, or the optical element may be displaced from a predetermined position. A feature of the intraocular lens according to the invention is that the setting member is provided with a fixed support, i.e. an anchor, of predetermined shape to improve the stability of the intraocular lens.

In the embodiments described further below, a unique method is provided for inserting the molded body of the optical element and the setting member of the intraocular lens structure before implantation into the eye. The processing method of the above-mentioned unique intraocular lens structure is as follows: (a). Embedding a processed setting member in a removable carrier; (b). Positioning the embedded setting member by a mold for processing an optical element substantially centered with respect to the setting member; (c). Introducing an optical element material into the mold to form an optical element of the intraocular lens structure; (d). Curing the optical element material; (e). Removing the carrier from the assembly of the setting member and the optical element; and (f). The cured intraocular lens structure is removed from the mold, and an intraocular lens structure having a setting member integrated with an optical element of the intraocular lens structure is formed.

In a presently preferred embodiment, the working shape of the setting member comprises an arc-shaped anchor which provides good resistance to tension and compression. A currently preferred removable carrier is an optical wax that can be conveniently removed from the assembly by heat. Other water-soluble and alcohol-soluble carriers are of course also conceivable. After embedding the setting member in the removable carrier, centering the setting member on the fixing part as necessary and cutting it to a predetermined size if necessary, for example, by die cutting, the optical element material is introduced into the mold. it can.

The curing of the optical element material in the mold can be performed by any conventional means, for example, by heat, irradiation and / or chemical agents. Therefore, the ophthalmologist can select a predetermined combination from setting members and optical elements having many types of processing shapes having predetermined optical characteristics that can be custom-fitted according to the requirements of individual patients. . Further, the setting member and the optical element can be conveniently assembled by a molding insertion technique to form a stable intraocular lens. The above and other objects and advantages will become apparent from the following detailed description of the invention that refers to the accompanying drawings.

[0022]

BRIEF DESCRIPTION OF THE DRAWINGS The invention will be described in more detail hereinafter with reference to the drawings, in which: FIG.

The present invention provides an improved intraocular lens structure for surgical implantation in the eye, the intraocular lens structure comprising an optical element substantially centered with respect to the outer haptic portion, or setting member. . In one embodiment, the setting member is comprised of a relatively high temperature resistant polymeric material such as, for example, polyimide. The setting member can be processed by providing many types of processing shapes, and is integrated with the optical element of the intraocular lens structure. Thus, a new type of autoclavable, stable intraocular lens can be provided that has a suitable configuration of the shape of the setting member and the optical characteristics of the optical element that are conveniently manufactured and can be custom-fitted according to individual patient requirements. .

Further, there is provided a method for inserting a molding of a setting member into an optical element of an intraocular lens before implantation into an eye. This unique insert molding method eliminates the need for a second operation, such as machining the optics of the intraocular lens and providing a site for attaching the setting member of the intraocular lens thereto. Ensure uniform production of the inner lens.

Referring to FIG. 1 of the drawings, a stylized eye side after cataract sac extracorporeal extraction by conventional methods, showing the main eye portions, ie, iris 11, pupil 12, edge 13, and sclera 14. FIG. More particularly, FIG. 1 also shows a cornea 16 made of transparent tissue connecting the sclera 14 to the edge 13. Anterior segment of eye is iris 11 and pupil 1
2 divides into two main chambers. Anterior chamber 17 is cornea 1
It is defined by the space between 6 and the iris 11. Posterior chamber 1
8 is defined in the space between the iris 11 and the vitreous body 19.

In a surgical procedure commonly known as cataract extraction, the posterior chamber 18 is defined by a vitreous membrane 20. In the course of surgery commonly known as cataract extracorporeal extraction, the posterior chamber 18 is defined by a posterior capsule 21 secured to the ciliary band 22 by zonules 23. The portion of the anterior capsule remains as a flap 24 and, together with the posterior capsule 21, forms an ocular segment commonly known as a "capsular bag". Iris 11
The area around the posterior chamber 18 between the cuff 22 and the extension of the ciliary body 22 is referred to as the ciliary groove 26. The peripheral region of the anterior chamber between the cornea 16 and the iris 11 is called an eye angle 27. The area of the sclera posterior to the plane of the iris and anterior to the vitreous 19 is known as the pulse plug 28.

In view of the above ocular segment, a key feature in one embodiment of the present invention is to provide a fixation system for various intraocular lens structures, which are provided by the surgical procedure. Includes an intraocular lens with deformable optics such that the intraocular lens can be secured therein to minimize the significant danger associated with disengagement of the setting member from the optics. More specifically, when using the improved intraocular lens structure for placement in a capsular bag, a typical overall diameter of the setting member of the intraocular lens structure is from about 9 mm to about 12.5 mm. When the setting member is dimensioned to be worn in the posterior chamber of the eye, behind the iris, and in front of the ciliary body, a typical overall diameter of the setting member is in the range of about 12.5 mm to about 14.5 mm. It is. Further, when the setting member is used in placing an intraocular lens structure in the anterior chamber of the eye, the total diameter of the setting member is typically from about 11 mm to about 14 mm.

Preferably, the setting member is broadly curved to be at least about 20% from the outer circumference of the optical element of the intraocular lens. These wide curvatures distribute the pressure applied during intraocular manipulation of the intraocular lens and help to position the intraocular lens in position within the eye. In addition, such a configuration provides a wide contact surface for the implanted intraocular lens to prevent tears or slippage by holes in the eye's supporting tissue. However, as will be readily apparent to those skilled in the art, the above exemplary dimensions are merely intended to illustrate many types of suitable dimensions and shapes that fall within the spirit and scope of the present invention.

FIG. 3 shows one embodiment of an intraocular lens optic 30 suitable for use as an intraocular lens.
In the illustrated embodiment, the setting member is not shown to facilitate understanding of the present invention. The optical element 30 can be deformable and provide desired memory characteristics, appropriate structural dimensions, etc., and can be designed to make an intraocular lens compatible and designed to be inserted into the eye. It can be composed of materials.

[0030] Preferably, the deformable optical element 30 of the intraocular lens is one or more materials selected from the group consisting of polyurethane elastomers, silicone elastomers, hydrogel plastics, collagen, organic or synthetic gels, or combinations thereof. It consists of. In one embodiment, the optics of the intraocular lens can be machined from one of the above materials and can be provided with a thin surface layer of a second or third material. Further, the optical element may be shaded, colored or provided with a closed portion provided with a selective light-absorbing component and processed to give a light projection effect similar to that of a crystalline lens.

As shown in FIGS. 4, 5, 6, 7 and 8, the optical element 30 is designed to correct the refractive index without placing or removing the surgically removed lens. Many types of cross sections can be provided and machined. In this regard, FIGS.
2, a plano-convex lens 33, a plano-concave lens 34, a biconcave lens 35, and an uneven lens 36 are shown.

As shown in FIG. 9, the setting member 37 is made of a material having sufficient temperature resistance for autoclaving without adversely affecting the processing shape. Further, the material of choice should be capable of autoclaving the assembled intraocular lens structure immediately prior to implantation so that it can be sterilized. Preferably, the setting member 37 is made of a biocompatible polymer such as polyimide.

The selected material for the setting member 37 has suitable physical properties in terms of softness, compressibility, stiffness and extensibility, so that the optical element 30 of the intraocular lens structure can be well centered and set. Must be integrated.

As described above, the optical element 30 is further provided by Thomas. R. 1982 by Mazotsuko
It may also be deformable, as described in U.S. Patent Application No. 346,105, filed February 5, 2005, entitled "Deformable Intraocular Lens Structure and Implantation Method and Apparatus". In this regard, the optical element of the intraocular lens may compress, roll, bend or stretch the intraocular lens to 80% or less of the cross-sectional diameter of the optical element when inserting the optical element into the eye. It has a memory property that allows it to be deformed and return to its initial shape, dimensions and constant focal length after implantation into the eye.
Typically, the deformable optical element is fabricated from one or more suitable materials, such as, for example, polyurethane elastomers, silicone elastomers, hydrogel polymers, collagen compounds, organic or synthetic gel compounds, and combinations thereof. .

As will be apparent to those skilled in the art, the optics of an intraocular lens according to the present invention can be machined by providing a base made of any of the above materials, and further comprising a surface of a second or third material. Layers can be provided. Further, the optical element can be shaded, colored, or provided with a closed portion to provide a desired light transmissive effect.

Further, the intraocular lens structure may include means for manipulating, positioning, or fluid flow around or through the positioning member of the intraocular lens. In this regard, the intraocular lens may be provided with one or more holes as necessary and positioned appropriately, and the holes may be partially or entirely formed in the cross-section of the intraocular lens or in the cross-section of the intraocular lens. It can extend as a depression or recess. further,
The optics of the intraocular lens or the setting member of the intraocular lens can also be made of a gas or fluid permeable material.

An important feature of the unique intraocular lens structure according to the present embodiment is that the setting member 37 is used for the optical element 3 of the intraocular lens.
0. This is the optical element 30
And the setting member 37 minimize the likelihood of being disassembled causing trauma to the ocular tissue or displacing the intraocular lens from its predetermined position. Another important feature of the unique intraocular lens structure according to the present invention is that the setting member 37 has sufficient fixation for the optics to provide tension and tension when the ophthalmologist places the intraocular lens in the eye. The purpose is to provide good resistance to compression. In this regard, the fixation of the setting member 37 within the optical element 30 can be from about 50 g to at least about 11
It should be enough to withstand 5 g of pulling force.

In one particular preferred embodiment, the setting member 37 shown in FIG. 13 is shaped with one or more fixed supports or anchors 38. Preferably, the two anchors are integrated with the optical element 30 and the insertion portion is formed at a position relatively opposed to the outer peripheral portion of the optical element 30. Generally, the preferred anchor 38 is shown in FIG.
Extend over a predetermined length along the periphery of the optical element 30 as shown in FIG. 1 and the anchors are described as having an arcuate shape, located symmetrically with respect to the center of the optical element. can do.

In one presently preferred embodiment, anchor 3
8 is a substantially circular optical element 3 as shown in FIG. 13, i.e. the anchor extends across the end of the setting member on both sides and is formed of a wire integral with the setting member.
It has an arc of about 80 ° along the 60 ° outer circumference. In the illustrated embodiment, each anchor 38 is approximately 0.035 inches long. Of course, the setting member 37
It must meet industry standards such as, for example, the American National Standard Institute (ANSI) Z-AD.

In a presently preferred intraocular lens structure, the optical element is fabricated from an autoclavable silicone material, particularly a peroxide- or platinum-catalyzed pharmaceutical grade silicone. The silicone material is, for example, R
It can be processed from a silica filler such as MZ-1. In the preferred embodiment, the setting member 37 is an etched polyimide loop, which can be etched in a conventional manner such as, for example, photoetching. Typically, the polyimide material is between 700 and 800
Maintains its stability over a range of temperatures in ° F.

Further, the present embodiment provides a unique method of inserting the molded body of the optical element 30 of the intraocular lens structure and the setting member 37 prior to implantation into the eye. The processing method described above includes: (a). Embedding a processed setting member in a removable carrier; (b). Positioning the embedded setting member in a mold for processing an optical element substantially centered with respect to the haptic portion; (c). Introducing an optical element material into the mold to form an optical element of the intraocular lens structure; (d). Curing the material; (e). Removing the carrier from the assembly of the setting member and the optical element; and (f). The cured intraocular lens structure is removed from the mold, and an intraocular lens structure having a setting member integrated with an optical element of the intraocular lens structure is formed.

Referring to FIG. 9, one embodiment of the setting member 37 is shown without the optical element 30 to facilitate understanding of the present invention. FIG. 10 shows a front view of a suitable die member 39 for cutting the setting member 37 after being embedded in the removable carrier 40.

As can be seen most clearly in FIG.
The setting member 37 shown in FIG. 3 is embedded in the removable carrier 40, and the predetermined position of the setting member 37 before and during the introduction of the material into the mold for forming the optical element 30 of the intraocular lens structure. To maintain.

As shown in FIG. 12, after the central portion of the setting member 37 for embedding the intraocular lens is cut by the die member 39, the setting is performed using the centering fixing part, as will be understood by those skilled in the art. A removable carrier in which the member 37 is embedded can be accommodated during the cutting process.

The intraocular lens structure 4 obtained according to the present invention
1 is shown in FIG. 13 and FIG. A presently preferred removable carrier is an optical wax that can be conveniently removed from the mold assembly by heat. Other water-soluble and alcohol-soluble carriers are of course contemplated within the spirit and scope of the present invention.

As described above, after the setting member 37 is embedded in the removable carrier 40, the setting member 37 is centered on a fixing portion (not shown) if necessary, and if necessary, for example, an optical element material is placed in a mold. Before being introduced into the wafer, it can be cut to a predetermined size by the illustrated die cutting mechanism. Curing of the optical element material in the mold can be performed by any conventional means, such as by heat, irradiation and / or chemical agents. Typically, a conventional silicone cure cycle involves a cure time of from about 15 minutes to about 1 hour and a temperature in the range of about 150C.

In the case where heat is used to melt the removable carrier, the mold for the optical element may be made of molten or melted wax to mold the optical element 30 as will be readily understood by those skilled in the art. A shoulder can be provided for accommodating the mold cavity at a location not obstructing the mold cavity. Thus, the method in this embodiment provides an insert molding of the setting member to the optical element, and further comprises the appropriate setting member shape and optical properties of the optical element to be worn according to the needs of the individual patient. To provide an intraocular lens structure combination.

Typically, an intraocular lens structure according to the present invention has a total length of about 9 mm to about 14 mm and about 4 m
It has a width from m to about 14 mm and can be processed to give a further wide range of refractive indices. Typically, the optical element has a thickness of about 0.1 mm to about 1.0 mm and a thickness of about 4 mm to about 6 mm.
Having a diameter in the range of

While the invention has been illustrated and described with reference to embodiments, it will be understood that many modifications may be made without departing from the spirit and scope of the invention.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a human eye showing a relatively small surgical incision made in ocular tissue for a major ocular portion for purposes of illustrating a unique intraocular lens according to the present invention.

FIG. 2 is a partial side sectional view of the human eye shown in FIG. 1, showing an internal state of an eye region after removal of extracapsular cataract by a conventional method.

FIG. 3 is a front view showing an embodiment of an optical element of an intraocular lens in which a setting member is omitted for easy understanding of the present invention.

FIG. 4 is a side sectional view showing an optical element of the intraocular lens shown in FIG. 3 of a biconvex lens type.

5 is a side sectional view showing an optical element of the intraocular lens shown in FIG. 3 of a plano-convex lens type.

6 is a side sectional view showing an optical element of the intraocular lens shown in FIG. 3 of a plano-concave lens type.

7 is a side sectional view showing an optical element of the biconcave lens type intraocular lens shown in FIG. 3;

8 is a side sectional view showing an optical element of the intraocular lens shown in FIG. 3 of the concave-convex lens type.

FIG. 9 is a front view of one embodiment of a setting member in which an optical element is omitted to facilitate understanding of the present invention.

FIG. 10 is a front view of a die member for cutting the setting member shown in FIG. 9 after being embedded in a removable carrier.

FIG. 11 shows a material inserted into a mold and embedded in a removable carrier that maintains a predetermined position of a setting member before or during the formation of the optical element of the intraocular lens structure. It is a front view of the setting member shown in FIG.

FIG. 12 is a front view showing a setting member for embedding an intraocular lens after a center portion of the setting member is die-cut;

FIG. 13 is a front view of one embodiment of an intraocular lens structure made according to the present invention.

FIG. 14 is a side sectional view of the intraocular lens structure shown in FIG. 13 according to the present invention.

[Explanation of symbols]

 Reference Signs List 30 Intraocular lens optical element 32, 33, 34, 35, 36 Optical element 37 Setting member 38 Anchor 39 Die member 40 Removable carrier 41 Intraocular lens structure

Claims (5)

(57) [Claims] 1. The method according to claim 1 , wherein the device is inserted into an eye through an incision.
Deformable optic having a periphery
And an element for stationaryly securing the optical element in the eye
Two setting members, one end of each of which is
The two devices are arranged at predetermined positions in the
Fixed member and attached near the periphery of the optical element
Two anchors which are spaced apart from each other
And fixed to the other end of each of the setting members
Wherein at least one of the anchors has an arcuate shape
A predetermined length along the periphery of the optical element
And these anchors are
Placed symmetrically around the center of the element
An intraocular lens comprising the two anchors. 2. An anchor according to claim 2, wherein said anchor is formed of a wire.
The intraocular lens according to claim 1 . 3. The method of claim 2, wherein at least one of said anchors comprises :
The intraocular according to claim 1 or 2, wherein the intraocular is integral with the setting member.
Lens . 4. The method of claim 1 , wherein each of the anchors comprises the two settings.
Extending across the other end of each of the members on both sides thereof
An eye according to any one of claims 1 to 3, wherein
Inner lens . 5. The optical element has a substantially circular perimeter.
The intraocular laser according to any one of claims 1 to 4,
Lens.