WO2014108100A1

WO2014108100A1 - Intraocular lens

Info

Publication number: WO2014108100A1
Application number: PCT/CN2014/070528
Authority: WO
Inventors: 王清扬; 齐备
Original assignee: Wang Qingyang
Priority date: 2013-01-14
Filing date: 2014-01-13
Publication date: 2014-07-17
Also published as: CN103006351A

Abstract

Disclosed is an intraocular lens (10), comprising an optical body (30) and a support body (20). The optical body (30) and the support body (20) have a front and a rear surface. A plurality of projections (40) are provided at the support body (20) near the edge of the optical body (30) at the front surface of the intraocular lens (10). After locating the intraocular lens (10) in the posterior chamber (110), the plurality of projections (40) are in contact with the iris (140). An additional space is formed between the front surface of the intraocular lens (10) and the iris (140) at least around the projections (40), wherein the space adds a passage for the aqueous humour; and the aqueous humour of the posterior chamber (110) enters the anterior chamber (100) from the additional passage by bypassing the intraocular lens (10) so as to maintain the normal intraocular pressure.

Description

Intraocular lens

Technical field

The present invention relates to an intraocular lens (IOL). More specifically, the present invention relates to an intraocular lens that can be implanted in the eye and coexist with the natural lens of the eye to correct eye refractive error. Background technique

The applicant submitted the invention patent entitled "Intraocular refractive lens and its implantation method" on February 21, 2003. The application number is 03115498.0, and the publication number is

The present application is hereby incorporated by reference in its entirety in its entirety in its entirety in its entirety in its entirety herein

In recent years, with the improvement of ophthalmic microsurgery techniques and the popularization and improvement of intraocular lens (intraocular lens) implantation, posterior chamber intraocular lens implantation is not only easier to maintain proper physiological position, but also avoids the former. Long-term complications of atrial intraocular lens. The scheme of placing the intraocular lens in the posterior chamber of the eye usually includes the following two situations: 1) without removing the natural lens in the capsular bag, placing the intraocular lens on the anterior side of the natural lens to adjust the diopter of the eye; 2) The natural lens is removed and placed in the intraocular lens to replace the original natural lens with an intraocular lens, for example in the treatment of cataract.

Due to the precision of the physiological structure of the eye, the above techniques still need to be continuously improved and improved, thereby further reducing the side effects caused by the surgery and improving the compatibility and fit of the intraocular lens with the living body itself.

In the art, an intraocular lens is implanted in the posterior chamber of the eye, and if the original natural lens still exists, it is necessary to reconstruct the aqueous humor cycle. How to effectively rebuild the aqueous water cycle is still an important aspect in the field that is expected to improve effectively.

It is known that there are related improvement measures in the field. For example, STAAR® Surgical Company has proposed a technique for perforating an intraocular lens implanted in the posterior chamber of the eye, which is positioned behind the pupil. However, the hole positioned behind the pupil has to be placed in the optical body portion of the intraocular lens, and therefore, it is easy to affect the refractive performance of the lens. Another possible problem is that the intraocular lens is placed near the pupil and is the site with the highest pressure. Therefore, the part is easy to abut with the iris. During the pupil contraction, the contact between the iris and the intraocular lens causes a little iris pigment to fall off, which may cause small pores to be blocked by the iris.

Another method for reducing the discharge resistance of aqueous humor is also proposed in the art, namely, in the iris.

Perforation on (iris), for example, PC-PRL of Hangzhou Baikang Medical Technology Co., Ltd. and ICL of STAAR® Surgical Company have used incision in the iris circumference before or during surgery, and assisted rooms with iris incision The water circulation channel helps to reconstruct the circulation channel of the aqueous water. This method still has shortcomings. First, this method will increase the trauma caused by surgery, and it is difficult to predict the long-term effects of this trauma. In addition, since the surface of the iris contains a large amount of pigment, the punching is likely to cause the pigment to fall off. The effects of pigment shedding may increase the risk of secondary high intraocular pressure, glaucoma, and the like. In addition, when the upper eyelid is turned up, the remaining hole in the iris can be observed from the outside of the eye, which also affects the appearance of the eye to a certain extent.

In order to solve the above problems in the prior art, the present invention proposes a new improvement. Summary of the invention

Accordingly, it is an object of the present invention to provide an improved intraocular lens for improving aqueous humor circulation after intraocular lens implantation. The improvement of the present invention is to improve the anterior surface structure of the intraocular lens and to avoid the improvement of the aqueous humor cycle by surgical trauma in a conventional manner. With the present invention, it is desirable to eliminate or reduce the effects of intraocular lens implantation on aqueous humor circulation.

A first aspect of the invention provides an intraocular lens comprising an optical body and a support body, the optical body and the support body having a front surface and a rear surface, wherein the front surface of the intraocular lens is adjacent to the edge of the optical body A plurality of protrusions are provided at the support body.

The above first aspect provides the following technical effects: on the front surface of the intraocular lens, a plurality of protrusions are disposed at a support body near the edge of the optical body, and the plurality of protrusions are implanted after the intraocular lens is implanted in the posterior chamber of the eye. Will contact the back surface of the iris, at least around the protrusion to create an additional gap between the front surface of the intraocular lens and the posterior surface of the iris, thereby increasing the passage of the aqueous humor, the chamber of the posterior chamber of the eye Water can bypass the intraocular lens from the additional channel to the pupil and into the anterior chamber of the eye.

According to the second aspect of the present invention, the projection provided on the intraocular lens is integrally formed with the intraocular lens, and the projection has a smooth curved surface. Preferably, the protrusion is from A hemispherical shape in which the front surface of the intraocular lens protrudes.

The raised smooth surface and hemispherical design minimizes the mechanical stimuli of the embossment on the iris and avoids obstructing or disturbing the movement of the pupil. The convex arrangement of the lens can be formed by adding pits at corresponding positions of the existing lens processing mold, and therefore, the convex hemispherical design is more convenient for the processing of the lens mold.

According to another aspect of the present invention, there is provided an intraocular lens having a hemispherical diameter of 0.3 to 0.5 mm.

Further, an intraocular lens according to the above aspect of the invention, wherein the plurality of protrusions are arranged separately around the optical body in a manner capable of providing stable support for the intraocular lens.

Further, according to the intraocular lens of the above aspect of the invention, a total of four protrusions are provided, which are arranged separately from each other in a manner of being symmetrical and bilaterally symmetrical with respect to the optical body.

Further, according to the intraocular lens of the above aspect of the invention, a total of six projections are provided, which are arranged separately from each other in a manner of being vertically symmetrical and bilaterally symmetrical with respect to the optical body.

Further, it is preferred that the material of the intraocular lens of the present invention is a soft material having a specific gravity which is consistent with the specific gravity of the aqueous humor.

On the other hand, the present invention is also applicable to the case where the optical body in the intraocular lens has other shapes, for example, the optical body is disposed in a substantially elliptical shape, the long axis thereof is disposed in the horizontal direction, and the short axis is disposed in the vertical direction. Through this scheme, the glare entering from both sides of the pupil can be effectively overcome.

The design of the present invention avoids the need for at least one iris peri-incision (surgical injury) to avoid normal circulation of intraocular water after implantation of the intraocular lens. DRAWINGS

The invention will now be further described with reference to the drawings and embodiments.

1 is a schematic cross-sectional view showing a lensed intraocular lens implanted in a posterior chamber position according to a first embodiment of the present invention;

Figure 2 is a schematic plan view of the intraocular lens of Figure 1;

Figure 3 is a cross-sectional view of the intraocular lens taken along line A-A of Figure 2;

Figure 4 is a schematic cross-sectional view showing the intraocular lens of the comparative example of the comparative example of the present invention implanted in the posterior chamber; Figure 5 is a top plan view of a comparative example of the intraocular lens shown in Figure 4;

Figure 6 is a cross-sectional view showing a comparative example of the intraocular lens shown in Figure 5;

7 is a top plan view of an intraocular lens according to a second embodiment of the present invention.

Figure 8 is a top plan view of an intraocular lens according to a third embodiment of the present invention.

9 is a top plan view of an intraocular lens according to a fourth embodiment of the present invention.

Figure 10 shows a horizontal cutaway view of the eyeball. detailed description

The specific terminology used in the following description is for the purpose of clarity, and is not intended to limit or limit the scope of the invention. In the drawings and the following description, the same reference numerals are used to refer to the same.

The modifier "about" used in connection with a quantity includes the recited value and has the meaning specified by the context (e.g., it includes at least the degree of error associated with a particular number of measurements).

[Definition of commonly used terms]

To facilitate an understanding of the present invention, the following terms are first explained or defined: Natural lens: refers to the natural lens in the eye of a human (or broadly referred to as a mammal). Natural crystalline in vitro bread has a layer of elastic membrane sac, also known as a capsular bag. As referred to in the present invention, on the surface of the natural lens, it refers to the film capsule on the front surface of the natural lens. The natural lens is transparent and adjusts the ability to focus, allowing objects near (or far) distance to be imaged on the retina. Since the age of 40, most of these people's ability to adjust their focus has begun to decline. By the age of 50, they have completely lost this ability to adjust and focus. This is what we call presbyopia.

The intraocular lens, also called the intraocular refractive lens and the refractive lens, refers to the simultaneous presence and simultaneous action of the implanted human (or generally mammalian) eye and the natural lens to correct the visual refractive error. Optical lens. The intraocular lens consists of an optical body and a support.

Optical body: refers to the central component of the intraocular refractive lens, which can be a double convex mirror, a double concave mirror, a front concave convex convex mirror or a front convex back concave mirror. The optical body is used to concentrate the incident beam onto the retina, and its diopter is usually represented by D. For example, -1D is often said to be 100 degrees of myopia, +1D is often said to be 100 degrees farsighted.

Support: Also known as the "ankle", it is directly connected to the optical body. It does not provide the function of refractive adjustment, but is used to carry the optical area to support the ideal center position of the optical body in the eye. In the intraocular lens implanted in the posterior chamber, the optical zone is located behind the pupil, and the support is located on the posterior surface of the iris.

Cornea: A transparent, curved tissue at the front of the eye.

Iris: A ring of pigmented membrane behind the cornea with a pupil in the center.

The ciliary zonule: or simply a small band, refers to a small zonule that sticks around the equator of the natural lens. Also known as the ciliary body.

Pupil: A circular defect in the center of the iris that can be enlarged and reduced to adjust how much light enters the eye.

Anterior chamber: A spatial location between the cornea and the iris.

Posterior chamber: Refers to the spatial location behind the iris. In the context of the present invention, it is often referred to as a spatial location located behind the iris and in front of the natural lens. The iris is neither part of the anterior chamber nor the posterior chamber, but serves as a boundary between the front and the back.

Knife Incision: A term commonly used by surgeons in cataract surgery. Generally, an incision of about 3 mm in length is made on the cornea or on the edge, and an intraocular lens of about 6 mm in diameter can be implanted into the incision after folding. In general, this type of surgery does not require sutures and the wound will heal itself.

The technical solutions of the present invention are further described below with reference to the accompanying drawings, which are to provide a more complete understanding of the present invention. The drawings are provided for illustrative purposes only and are not intended to indicate the relative size and size of the device or its components and/or to limit or limit the scope of the embodiments.

Explanation of the direction description: The horizontal direction or the left and right direction mentioned in the text refers to the left and right direction of the eyes or the human eye. The up and down direction mentioned in the text refers to the up and down direction of the eyes or the human eye. To facilitate an understanding of the present invention, FIG. 10 is provided herein which shows a typical eye cutaway view. Refer to Figure 10 for a description of the normal aqueous circulation system.

The eye chamber includes the anterior chamber 100, the posterior chamber 110, and the vitreous chamber 121 (which houses the vitreous body) 120).

An anterior chamber 100, located behind the cornea 130, before the pupil region of the iris 140 and the lens 150, is surrounded by an angle formed by the limbus 160, the ciliary body 170, and the iris root, which is called the anterior chamber angle 280. , is a key part of the aqueous circulation.

A posterior chamber 110, located behind the iris 140 and the pupil 180, in the gap between the lens 150 and the suspensory ligament and the ciliary process. The posterior border of the posterior chamber is the pigment epithelium behind the iris; the anterior border is the junction of the iris and the ciliary body; the border is the ciliary crown with ciliary processes and intersegmental recesses; the true posterior border is the vitreous anterior membrane . The back room has a small volume and an irregular shape, which is filled with water. The size of the posterior chamber space is affected by the accommodation factor of the eye. When the eye is adjusted, the lens 150 is convex forward, and the posterior chamber 110 is narrowed. In the state of being adjusted to rest, the lens 150 is restored to its original shape. The rear room 110 is widened again.

There is a shallow groove between the propor part of the posterior chamber, the root of the iris and the ciliary process, called the ciliary sulcus. The diameter of this groove is similar to the diameter of the cornea. The anatomical location of the ciliary sulcus on the surface of the sclera 190 is clinically important.

In addition, some major structures of the eye are also shown in FIG. 10, including: choroid 200, retina 210, Cloquct tube 220, optic papilla 230, optic nerve 240, scleral screen 250, macular fovea 260, serrated 270, light Axis C, boresight B, geometric equator XI, and anatomical equator X2.

The front and rear rooms are filled with water. The aqueous humor is produced by the ciliary process epithelium, first entering the posterior chamber, flowing into the anterior chamber through the pupil, and then exiting the blood circulation through the trabecular meshwork of the anterior chamber and the Schlemm tube. A small amount of aqueous humor will be absorbed or enter the lymphatic circulation around the optic nerve. Under normal circumstances, the formation and discharge of aqueous humor maintains a dynamic balance.

The aqueous humor is a colorless, transparent liquid with a capacity of 0.25 to 0.30 ml, an anterior chamber of about 0.18 ml, and a posterior chamber of about 0.06 ml. The aqueous humor comes from plasma, and its chemical composition is similar to that of plasma. The main component is water. The protein content is significantly lower than that of plasma, but the content of vitamins 0, Na+ and Cr is higher than that of plasma. The physiological function of aqueous humor is to provide nutrients for the cornea, lens and anterior segment of the vitreous and maintain normal intraocular pressure.

Due to the implantation of the intraocular lens, the intraocular lens, especially the intraocular lens implanted in the posterior chamber Body, it is easy to generate extra resistance in the aqueous drainage system. For example, when the intraocular lens is placed behind the pupil, the contact surface between the iris and the crystal surface may increase and close, so that the resistance of the aqueous humor from the posterior chamber to the front chamber increases, and even the direction of the aqueous humor changes from the anterior chamber to the posterior chamber. . If the resistance to the aqueous drainage system is not effectively eliminated, it will have clinically undesirable consequences, such as elevated intraocular pressure or glaucoma. It is an object of the present invention to improve the structure of an existing intraocular lens itself, and more particularly to change the front surface structure or configuration of an intraocular lens. Specifically, it relates to an intraocular lens implanted in the posterior chamber of the eye. This intraocular lens coexists with the natural lens of the eye and can be used to correct the refractive error of the eye.

Referring to Figures 1-3 and Figures 7-9, an embodiment of the present invention is illustrated. The intraocular lens 10 according to the present invention includes an optical body 30 disposed in the middle of the intraocular lens 10 and a support body 20 disposed around the optical body 30 for carrying the optical body 30.

Since both the anterior chamber 100 and the posterior chamber 1 10 are filled with aqueous liquid in the eyeball, when the intraocular lens 10 is implanted, its posterior surface is substantially attached to the front surface of the natural lens 150. Since the aqueous liquid in the eye flows from the posterior chamber 10 through the pupil 180 to the front chamber 100, the flow of the aqueous liquid is such that the thin water layer sandwiched between the intraocular lens 10 and the natural lens 150 is continuously replenished and Replace the update.

The key to the present invention is to change the structure of the front surface of the intraocular lens 10, specifically to change the front surface structure of the portion of the support body 20, and to provide a plurality of protrusions 40 at the support body 20 near the edge of the optical body. These projections 40 have a shape of a mound, and the bottom portion thereof is provided at the body portion of the lens supporting body 20, and is protruded from the front surface of the support body 20. These projections are integrally formed with the lens itself, and corresponding recesses are provided at the time of manufacturing the lens mold, and the lens and the moire structure thereon can be obtained by injection molding or the like.

When the intraocular lens 10 is placed in the posterior chamber of the eye, the projection 40 will contact the rear surface of the iris 140, i.e., provide support to the iris 140, thereby forming a suitable gap around the projection 40 to constitute an additional Water circulation channel. Preferably, the projection 40 has a smooth surface, preferably a smooth curved surface. More preferably, the protrusion is a hemisphere protruding from the front surface of the intraocular lens. The design of the surface shape of the projections 40 is based on considerations of interaction with the iris 140. The smooth surface of the projection 40 minimizes mechanical irritation to the iris, further, When the pupil is enlarged and reduced, the iris 140 "crawls" on the surface of the projection 40. Therefore, the smooth surface of the projection 40 can avoid obstructing or disturbing the movement of the pupil.

In a preferred embodiment, the projections are arranged in a hemispherical shape. The hemispherical shaped projections are suitable for providing smooth support while reducing the "crawling" interference of the iris 140 from all directions.

Further, the size setting of the protrusion is described by taking a hemispherical protrusion as an example. The diameter of the hemispherical projection is set to be about 0.3 mm to 0.5 mm, and the height is a hemispherical radius. Of course, the specific dimensions can be appropriately adjusted depending on the flexibility of the material or the specific application.

The invention does not particularly limit the number of protrusions. For example, three projections 40, four projections 40, six projections 40, and the like can be provided. The number of projections 40 is set primarily to provide stability to the support, and to provide a gap between the iris 140 and the body of the lens 10 after the projection 40 is placed in contact with the iris 140 after the intraocular lens is implanted behind the iris.

The plurality of projections are spaced apart about the optical body in a manner that provides stable support for the intraocular lens, with the intention of providing the plurality of projections together to provide stable planar support to the intraocular lens and to provide a desired gap for aqueous humor to circulate.

The present invention is not intended to specifically define the material of the intraocular lens, and existing ocular posterior lenses made of a variety of different materials can be modified in accordance with the present invention. Among these materials, materials having elastic and shape memory properties and being elastic in the temperature range of use include, but are not limited to, soft polyacrylates, silicone rubbers, gels, and others. Molecular soft materials.

An example of a polymer that can be used to produce the intraocular lens of the present invention is also known from the following patent documents: U.S. Patent 6,271,281, issued to Liao et al., issued Aug. 7, 2001; U.S. Patent No. 6,432, 137 to Lanushyan et al., issued on Aug. 13; U.S. Patent No. 6,780,899, issued to Aug. 24, 2004; U.S. Patent No. 6,679,605, issued to Jan et al. U.S. Patent No. 5,444,106, the disclosure of which is incorporated herein by reference. These examples are derived from polymers of silicones and acrylics. Examples of other useful hydrophobic polymers include polyolefins such as styrene-butadiene copolymers and styrene-isoprene copolymers having a flexible elastomeric polymer network.

The present invention is directed to improving the front surface structure of an existing intraocular lens, and therefore, According to the present invention, an improved solution can be proposed based on existing intraocular lenses. Example

Next, structural improvements of the intraocular lens according to the present invention will be specifically described with reference to the embodiments. First embodiment

Referring to Figures 1-3, the illustrated embodiment is a phakic intraocular lens implanted in the posterior chamber of the eye. 1 is a schematic cross-sectional view showing an intraocular lens with a lens eye implanted in a posterior chamber position according to a first embodiment of the present invention; FIG. 2 is a schematic plan view of the intraocular lens of the present embodiment; A schematic cross-sectional view of the intraocular lens of the present embodiment taken in line 2 of AA.

As shown in Fig. 2 and Fig. 3, the intraocular lens 10 includes an optical body 30 disposed at a central portion, and a support body 20 is disposed around the optical body 30 for carrying the optical body 30. In the present embodiment, the optical body 30 is circular, having a diameter of about 5 mm, and its center is shown by O. The support body 20 has a total width W of about 6 mm and a total length L of about 10.8 mm to 1.3 mm.

As shown in Fig. 2 and Fig. 3, a total of six protrusions 40 are provided in the embodiment, and the protrusions 40 are hemispherical, which is a solid structure and is integrally formed with the intraocular lens. The projections 40 are provided on the front surface of the support body 20, are disposed around the optical body 30, and are smoothly connected to the intraocular lens. The hemispherical projections have a diameter of from about 0.3 mm to about 0.5 mm. The six projections 40 are arranged separately around the optical body 30, and the optical body 30 is vertically symmetrical and bilaterally symmetrical so that the intraocular lens 10 is stably supported on the back surface of the iris 140.

As shown in FIG. 1, the present invention is capable of supporting the front surface of the intraocular lens 10 on the back surface of the iris 140 by changing the structure of the front surface of the intraocular lens 10, and the protrusion 40 provided on the front surface of the support body 20 A gap 50 is formed around the 40, which effectively reduces the resistance of the aqueous humor from the posterior chamber to the front chamber, thereby improving the aqueous circulation.

Example 1 A soft material, PC-PRL (with a crystal eye posterior refractive crystal) material from Hangzhou Baikang Medical Technology Co., Ltd. was used. The specific gravity of the material is consistent with the specific gravity of the aqueous humor. The intraocular lens can be made to suspend the center of the eye, that is, in the eye, it is "0" weight, "0" mechanical friction, so that it can be maintained without relying on the support. Stable in the eye. Comparative example

Referring to the comparative example of the intraocular lens shown in Figs. 4, 5 and 6, a conventional intraocular lens 10' is shown.

The difference from Embodiment 1 is that the support of the intraocular lens 10' is as shown in Figs. 4-6.

The front surface of 20' is not provided with a projection 40 as in the present invention around the periphery of the optical body 30'.

As shown in Fig. 4, the lens 10' is used for implantation in the posterior chamber of the eye 1 10 and is disposed on the front surface of the natural lens 150. Since the contact portion of the front surface of the intraocular lens 10' with the rear surface of the iris 140 tends to increase, the front surface of the intraocular lens 10' tends to be in close contact with the rear surface of the iris 140, and therefore, the aqueous humor flows from the posterior chamber. The resistance of the anterior chamber increases. Second embodiment

The second embodiment of the present invention has a similar structure to the above-described first embodiment, and therefore, similar features will not be repeatedly described. Referring to Figure 7, there is shown a top plan view of the intraocular lens of the present embodiment. In this embodiment, four hemispherical protrusions 40 are disposed on the front surface of the support body 20, and are disposed around the circular optical body 30, and the optical body is vertically symmetrical and bilaterally symmetrical so that the intraocular lens is stably supported on the iris. back. Third embodiment

The third embodiment of the present invention has a similar structure to the above-described embodiment, and therefore, similar features will not be repeatedly described.

The present invention is applicable to intraocular lenses of other kinds of optical body structures. The elliptical optical body 30 is employed in this embodiment, unlike the conventional circular optical body. The center 0 of the elliptical optical body 30 is shown in the figure, which is the intersection of the major axis diameter and the minor axis diameter of the elliptical optical body.

Referring to Figure 8, there is shown a top plan view of an intraocular lens of a third embodiment of the present invention. In the present embodiment, four hemispherical protrusions 40 are disposed on the front surface of the support body 20, and are disposed around the elliptical optical body 30, and the optical body is vertically symmetric and bilaterally symmetrical so that the intraocular lens is stably supported on the iris. back. Fourth embodiment

The fourth embodiment of the present invention has a similar structure to the above-described embodiment, and therefore, similar features will not be repeatedly described. Referring to Figure 9, there is shown a top plan view of an intraocular lens of a fourth embodiment of the present invention. In this embodiment, six hemispherical protrusions 40 are disposed on the front surface of the support body 20, and are disposed around the elliptical optical body 30. The optical body is vertically symmetrical and bilaterally symmetrical so that the intraocular lens is stably supported on the iris. back.

Various modifications of the embodiments of the invention will be apparent to those skilled in the <RTIgt; For example, the structure of the support 40 and the shape and structure of the optical body are changed. For example, a suitable small hole is provided on the support body 40. The small hole may be circular but not limited to a circular shape. The small hole functions on the one hand for the doctor to operate during the operation, and the small hole can be used to move the lens to a suitable position. . On the other hand, the small holes can also reduce the contact surface area of the lens with the natural lens. In addition, since the aqueous liquid in the eye is continuously flowing from the posterior chamber to the anterior chamber through the pupil, the presence of the small hole is also advantageous for further ensuring the patency of the aqueous fluid forward.

Accordingly, the above list is merely illustrative of specific embodiments of the invention. Obviously, the present invention is not limited to the above embodiments, and many variations are possible, and other possible variations are not described in detail herein. All modifications that can be directly derived or conceived by those skilled in the art from the disclosure of the present invention are considered to be the scope of the present invention. The invention is defined by the appended claims.

Claims

Claim

An intraocular lens comprising an optical body and a support body, the optical body and the support body having a front surface and a rear surface, wherein

On the front surface of the intraocular lens, a plurality of protrusions are provided at a support close to the edge of the optical body.

2. The intraocular lens according to claim 1, wherein the protrusion is integrally formed with an intraocular lens, and the protrusion has a smooth curved surface.

The intraocular lens according to claim 2, wherein the protrusion is a hemisphere protruding from a front surface of the intraocular lens.

4. The intraocular lens according to claim 3, wherein the hemispherical diameter is 0.3 to 0.5 mm.

The intraocular lens according to any one of claims 1 to 4, wherein the plurality of protrusions are arranged separately around the optical body in a manner capable of providing stable support for the intraocular lens.

6. The intraocular lens according to claim 5, wherein a total of four of the protrusions are disposed apart from each other in a manner of being vertically symmetrical and bilaterally symmetrical with respect to the optical body.

7. The intraocular lens according to claim 5, wherein a total of six of the protrusions are disposed apart from each other in a manner of being vertically symmetrical and bilaterally symmetrical with respect to the optical body.

8. The intraocular lens according to claim 5, wherein the material of the intraocular lens is a soft material whose specific gravity is consistent with the specific gravity of the aqueous humor.

9. The intraocular lens according to claim 1, wherein the optical body has a substantially elliptical shape with a long axis disposed in a horizontal direction and a short axis disposed in a vertical direction.