Anteriorly Shiftable Intraocular Lens

Abstract

An intraocular lens according to one aspect of the present invention is, An intraocular lens comprising an optic portion (100) and a haptic portion (200), The haptic part (200) is characterized by including at least three connecting parts (220) connected to the optic part (100) and ring-shaped loops (210) connected from the connecting part (220).

Description

Technology Field

[0001] The present invention relates to an intraocular lens, and more specifically, to an adjustable intraocular lens capable of adjusting distance according to a force transmitted from the lumbar spine. Background Technology

[0002] Conventional intraocular lenses had a problem in that they could not efficiently receive forces related to relaxation and contraction movements transmitted from the suspensory ligaments to the intraocular lens inside the capsule bag. Accordingly, the inventors presented an intraocular lens support in Korean Registered Patent No. 10-0843454. Unlike tension rings used to maintain the circular contour of the capsule bag during cataract surgery, this solves the problem where the anterior and posterior capsules of the capsule bag stick together when using conventional capsule tension rings, causing problems in controlling the lens thickness of the intraocular lens. It is disclosed that the intraocular lens has excellent accommodative power similar to that of a natural lens by efficiently transmitting forces related to relaxation and contraction movements transmitted from the suspensory ligaments to the intraocular lens inside the capsule bag.

[0003] Meanwhile, since the intraocular lens support is a means to efficiently transmit the force of the suspensory band to the intraocular lens, a structure suitable for efficiently receiving force is required for the intraocular lens itself on the opposite side.

[0004] However, conventional intraocular lenses are structured in such a way that it is difficult to efficiently receive the force transmitted to the entire area where the suspensory band contacts the capsule bag, as shown in Fig. 1, so development is required for this. Prior art literature

[0005] Korean Patent No. 10-0843454 The problem to be solved

[0006] One aspect of the present invention aims to provide an intraocular lens that can efficiently receive force transmitted from a capsule bag, thereby having high accommodative power, and is easy to position in the center when placed inside the capsule bag during surgery.

[0007] Another aspect of the present invention aims to provide an intraocular lens assembly comprising an intraocular lens that efficiently receives a force transmitted from the outside to the capsule bag and a support member that performs the function of stably positioning the intraocular lens on the inner surface (302). means of solving the problem

[0008] An intraocular lens comprising an optic portion (100) and a haptic portion (200) according to one aspect of the present invention is characterized in that the haptic portion (200) comprises at least three connecting portions (220) connected to the optic portion (100) and ring-shaped loops (210) connected from the connecting portions (220).

[0009] At this time, the optic part (100) has a front surface (110a) into which light enters and a rear surface (120a) into which light exits, and it is preferable that the haptic part (200) forms an angle of 2 to 10˚ toward the front side from a reference line dividing the front surface (110a) and the rear surface (120a).

[0010] At this time, it is preferable that the front surface (110a) and the rear surface (120a) have a biconvex shape.

[0011] In addition, it is preferable that the thickness of the haptic part be 0.4 to 0.5 mm.

[0012] In addition, the area ratio between the ring-shaped loop (210) and the optic part (100) is preferably 1:2 to 1:2.5.

[0013] In addition, the total outer diameter (R) including the optic portion (100) and the haptic portion (200) is preferably 5 to 40% longer than the (cross-sectional) length of the front portion (410) of the capsuler bag.

[0014] In addition, it is preferable that the intraocular lens be positioned in front of the center of the capsule bag after being inserted into the capsule bag.

[0015] In addition, it is preferable that the intraocular lens is inserted into the capsule bag, and the haptic part (200) is extended forward at an angle of 2 to 10˚ from the reference line and then bent backward to come into contact with the capsule bag.

[0016] In addition, when the radius of the center forming the spherical surface of the front surface of the optic part is R1 and the radius of the center forming the spherical surface of the rear surface is R2, it is preferable that R1 is equal to or greater than R2.

[0017] In particular, it is desirable that the above R1 / R2 value be 1.1 or higher.

[0018] In addition, the length (d) of the haptic part is preferably 0.7 to 1.0 times the diameter length (D) of the optic part when the diameter length (D) of the optic part is 1.

[0019] An intraocular lens assembly according to another aspect of the present invention is an intraocular lens assembly inserted into a capsule bag having a front portion, an equatorial portion, and a rear portion, wherein

[0020] An intraocular lens having an optic portion (100), a connecting portion (220) connected to the optic portion (100), and at least three ring-shaped loops (210) connected from the connecting portion (220); and

[0021] The intraocular lens connection support (300) is characterized by including a fixing means (330) to which the end of the loop (210) of the intraocular lens contacts and the loop (210) is fixed.

[0022] At this time, the intraocular lens connecting support (300) is a ring-shaped structure provided inside along the equatorial portion of the capsular bag, and in a cross-section cut along the visual axis direction, the wall of the structure has an inner surface (302) and an outer surface (301) that are convex toward the capsular bag, and the wall preferably includes a front section (310) located forward in the visual axis direction and a rear section (320) extending from the front section (310) and located behind the equatorial portion.

[0023] At this time, it is preferable that the optic part be located between the front part of the capsule bag and the equatorial part.

[0024] At this time, it is preferable that the haptic part be in close contact with the inner surface of the capsule bag, which includes an inner surface area corresponding to the area where the diaphragm is connected.

[0025] In addition, the optic part (100) has a front surface (110a) into which light enters and a rear surface (120a) into which light exits, and

[0026] It is preferable that the haptic part (200) be installed so as to be extended at an angle of 2 to 10˚ toward the front side from the reference line dividing the front surface (110a) and the rear surface (120a), and then bent toward the rear side to come into contact with the capsuleer bag. Effects of the invention

[0027] As described above, the intraocular lens according to one aspect of the present invention is equipped with at least three haptic parts (200) that are equally attached to the inner surface (302) of the capsule bag, making it easy to position the optic part (100) accurately in the center (the exact center) without tilting when positioning it inside the capsule bag during surgery.

[0028] In addition, since the haptic part (200) is fixed in close contact inside the capsuleer bag in the shape of three or more relatively large circular rings, when adjusting, the shape change of the capsuleer bag is induced from an elliptical shape to an inverted elliptical shape, and the optic part (100) is pushed forward (toward the iris) through a very flexible connecting part (220) to exert adjustment power, which is almost similar to the adjustment mechanism in which the adjustment power is exerted much greater from the front part to the back part (420) in an actual natural lens.

[0029] In addition, the size of the optic part (100) is small and the thickness of the connecting part (220) connecting the optic part (100) and the haptic part (200) is thin and flexible, so it has the effect of being able to be inserted with only a small incision during surgery.

[0030] In addition, the optic part (100) is inserted into the capsule bag and then moved forward to be mounted, which is completely different from conventional intraocular lenses, as all existing intraocular lenses are positioned at the equatorial part (430) of the lens or slightly behind the equatorial part (430), and the movement of the optic part (100) toward the front (towards the iris) due to the change in the capsule bag of the front part of the lens is maximized, thereby enabling high accommodative power.

[0031] In addition, the reason the haptic part (200) is installed to extend forward at an angle of 2 to 10˚ and then bend backward to contact the capsuleer bag is, firstly, to maximize the control power by strongly contacting the three rings of the haptic part (200) inside the front capsuleer bag (especially the attachment location of the anterior ciliary muscle) which exerts a stronger control power than the rear part (420); secondly, to help prevent tilt or decentering of the intraocular lens optic part; and thirdly, to fundamentally prevent the possibility of acute glaucoma occurring by blocking the flow of aqueous humor, which causes iritis, or in case of more severe contact, by the optical electrode of the intraocular lens, which is much flatter than the actual anterior pole during control due to the movement of the front part (towards the iris) caused by excessive control, even though there is no angulation or the posterior angulation corresponds more closely to the shape of the actual lens.

[0032] In particular, when an intraocular lens is combined with a support provided inside a capsule bag of a specific structure, higher accommodative power and refractive index can be achieved. Brief explanation of the drawing

[0033] Figure 1 is a schematic diagram of a human eyeball and an intraocular lens installed inside the eyeball. FIG. 2 is a plan view of an intraocular lens according to an embodiment of the present invention. Figure 3 is a cross-sectional view along the A-A' line of Figure 2. Figure 4 is a cross-sectional view along the B-B' line of Figure 2. FIG. 5 is a schematic diagram showing the insertion state of an intraocular lens into a capsule bag according to an embodiment of the present invention. FIG. 6 is a plan view of a connecting support (300) for an intraocular lens according to one embodiment of the present invention. Figure 7 is a cross-sectional view according to AA of Figure 1. FIG. 8 is a schematic diagram showing the insertion state within a capsule bag of an embodiment according to the present invention. FIG. 9 is a schematic diagram showing the insertion state within a capsuleer bag of a reference embodiment that is identical to the present invention but has a different orientation of the haptic part (200). FIG. 10 is an explanatory diagram illustrating the operation of the intraocular lens when looking at a distant and a near distance, respectively, according to the embodiment of FIG. 8. Specific details for implementing the invention

[0034] Before describing the present invention in detail below, it should be understood that the terms used in this specification are intended only to describe specific embodiments and are not intended to limit the scope of the invention, which is defined solely by the appended claims. Unless otherwise stated, all technical and scientific terms used in this specification have the same meaning as generally understood by those skilled in the art.

[0035] Throughout this specification and claims, unless otherwise noted, the terms "comprise," "comprising," and "comprising" mean including the mentioned article, step, or group of articles and steps, and are not used to mean excluding any other article, step, or group of articles or groups of steps.

[0036] Meanwhile, various embodiments of the present invention may be combined with any other embodiments unless explicitly stated otherwise. Any feature indicated as particularly desirable or advantageous may be combined with any other features and features indicated as desirable or advantageous.

[0037] In the drawings, the width, length, thickness, etc., of components may be exaggerated for convenience. Overall, the drawings are described from the observer's perspective, and when one component is described as being "above / below" or "on / below" another component, this includes not only cases where it is "immediately above / immediately below" another component, but also cases where there is another component in between.

[0038] FIG. 2 is a plan view of an intraocular lens according to an embodiment of the present invention, FIG. 3 is a cross-sectional view along line A-A' of FIG. 2, and FIG. 4 is a cross-sectional view along line B-B' of FIG. 2.

[0039] According to this, an intraocular lens according to one embodiment of the present invention includes an optic portion (100) and a haptic portion (200).

[0040] The optic portion (100) forms the center of the lens and is a place where light passes through to form a focus, performing the essential function of an intraocular lens. The optic portion (100) includes a front surface (110a) where light enters and a rear surface (120a) where light exits, and the optic portion (100) is made of a high-quality transparent material to correct vision and accurately transmit images to the retina of the eye.

[0041] The optic part (100) is mainly made of acrylic, silicone, or other highly biocompatible materials and is not limited to specific materials in the present invention. The materials should be transparent, have high optical quality, be able to remain stable in the human body for a long period of time, and preferably have properties that minimize allergic reactions or inflammation.

[0042] The front surface (110a) and rear surface (120a) of the optic part (100) preferably have a refractive power (smaller radius of curvature) that is 1.25 to 2.5 D (diopter) higher than the refractive power of the peripheral part, and have a biconvex aspherical shape.

[0043] The aspherical design mimics optical properties similar to the natural lens of the eye, thereby providing the user with a more natural visual experience. The aspherical design of the anterior surface (110a) provides better refraction for light passing through the periphery of the eye, and the aspherical design of the posterior surface (120a) interacts with the natural fluid dynamics of the eye to help maintain the position and stability of the artificial lens, contributing to minimizing refractive errors.

[0044] At this time, it is desirable that the degree of asphericity of the rear surface (120a) and the front surface (110a) be similar and not significantly different. For example, 1.25:1.25, 1:1.25, 1.25:1, and 2.5:2.5 are desirable. To express the shape of the aspheric surface as a single numerical value, the following mathematical equation used to describe the aspheric surface may be used.

[0045] (Equation 1)

[0046]

[0047] Here c is the reciprocal of the central curvature of the lens, k is a conical constant, and 1, 2, 3,… A 1 A 2 A 3 … is a higher-order aspheric coefficient. Each aspheric coefficient indicates the degree to which the surface deviates from the sphere (see Fig. 3 for z and h). For example, A1 is r 4 As a coefficient of the term, it indicates how much the lens shape deviates from the sphere when the r value is large (i.e., near the edges of the lens).

[0048] Therefore, coefficients such as A1, A2, A3, ... are used to express the change in curvature that increases from the center to the edge of the lens, thereby accurately describing the overall aspherical shape of the lens. Thus, these coefficients do not represent the difference from a spherical surface as a single value, but are parameters used to explain the difference in curvature at specific points of the lens.

[0049] For example, in the intraocular lens of FIG. 3, when the radius of the center forming the spherical surface of the front surface is R1 and the radius of the center forming the spherical surface of the rear surface is R2, R1 is equal to or greater than R2. Also, the spherical surface becomes flatter as it approaches the edge of the optic part. At this time, the ratio of R1 to R2, R1 / R2, is preferably 1.1 to 2.

[0050] Meanwhile, since the intraocular lens according to the present invention is stably positioned in the center within the capsule bag, the shape of the aspheric surface can be implemented as desired to obtain the desired accommodative power. For example, the front and rear surfaces of the optic part can form an aspheric surface that is convex in the center and becomes flatter toward the edges.

[0051] Meanwhile, in conventional intraocular lenses, the diameter of the optic portion (100) is generally in the range of 6 mm to 7 mm, but in the embodiment of the present invention, the optic portion (100) is 4.3 to 5.5 mm, more preferably 4.5 to 4.8 mm. This is to make the diameter of the optic portion (100) relatively smaller and the length of the haptic portion (200) longer. The use of a conventional 6 mm optic portion (100) is intended to prepare for cases where the intraocular lens cannot be accurately seated in the center when inserted into the capsule bag during surgery.

[0052] However, as will be described later, the optic part (100) of the present invention is accurately positioned in the center by the haptic part (200), so the size of the optic part (100) can be reduced. When the size of the optic part (100) is reduced, the incision area during surgery is reduced, and due to the relatively larger haptic part, more changes in the haptic part are induced during control, which has the advantage of further increasing bio-controllability.

[0053] The thickness of the optic part is not limited, but generally, it becomes thinner as the refractive index of the material used increases, as the asphericity increases, and as the basic thickness of the optic part decreases.

[0054] The haptic part (200) serves to fix the intraocular lens inside the capsule bag and is located on the outer surface of the optic part (100), supporting the intraocular lens to be stably positioned inside the eye. That is, the haptic part (200) plays an important role in ensuring that the lens is fixed in the correct central position and remains in its proper position despite the natural movement of the eye.

[0055] The haptic part (200) is made of a material that is flexible yet provides sufficient support, and highly biocompatible materials such as silicone, acrylic, and propylene, which are stable for a long time in the human body and minimize allergic or inflammatory reactions, may be used.

[0056] The haptic portion (200) is tilted forward by about 2 to 10 degrees with respect to the reference line of the optic portion (100), that is, the reference line dividing the front surface (110a) and the rear surface (120a). This is so that when the optic portion (100) is moved forward and fixed after inserting the intraocular lens into the capsule bag as described later, the connecting portion (220) is bent to allow the loop (210) to make stronger contact with the inner surface of the front surface of the capsule bag.

[0057] The haptic part (200) of the present invention includes at least three loops (210) and connecting parts (220). For example, if there are three loops (210), each loop (210) may be connected to the optic part (100) by three connecting parts (220) at an angle of 120 degrees, or if there are four loops (210), each loop (210) may be connected in pairs of two, and each pair may be connected to the optic part (100) by four connecting parts (220) or two integrated connecting parts (220) at an angle of 180 degrees to each other.

[0058] The loop (210) preferably has a ring shape to increase the power transmission force by flexibly linking with the movement of the capsule bag while widening the contact area with the capsule bag. That is, since the loop contacts the front and rear of the equator while deforming into an elliptical shape, the power transmission force can be increased when used independently and when used together with the connecting support body described later.

[0059] The diameter of the loop (210) is preferably 2.8 to 3.2 mm, which is smaller than the diameter of the optic part (100). In the case of a ring shape, the cross-sectional shape is not limited, and various shapes such as a circle, square, or polygon can be applied. At this time, the area ratio between the loop (210) and the optic part (100) is preferably 1:2 to 1:2.5.

[0060] The area of ​​the optic part (100) refers to the area on the plane when the optic part (100) is projected onto a plane, and the area of ​​the loop (210) refers to the area formed by the outer shape of the loop (210), including the internal empty space, when the loop (210) is projected onto a plane.

[0061] The thickness of the haptic part (200) can be used to be the same as or similar to the attachment thickness of the connecting part of the optic part (100), and is preferably 0.4 to 0.5 mm.

[0062] The connecting part (220) is a part that connects the optic part (100) and the loop (210), and it is preferable that it be manufactured to be more flexible than the optic part (100) or the haptic part (200). For this purpose, for example, the connecting part may be made thin so that it bends well. FIG. 4 illustrates making it thin while being concave downward.

[0063] Since the connecting part (220) is formed flexibly, the connecting part (220) can be bent when the optic part (100) is moved forward after being inserted into the capsule bag. By doing so, the area of ​​contact between the loop (210) and the inner surface (302) of the connecting support body described later can be increased.

[0064] To this end, it is preferable that the overall outer diameter including the optic portion (100) and the haptic portion (200) according to an embodiment of the present invention be 5 to 40% longer than the (cross-sectional) length of the front portion (410) of the capsuler bag so that when the intraocular lens is positioned in the capsuler bag, the capsuler bag is supported from the inside and the capsuler bag is taut from the inside.

[0065] The length of the haptic portion (d), that is, the sum of the lengths of the connecting portion and the loop, is preferably 0.7 to 1.0 times the diameter length (D) of the optic portion, where D / 2 is the length of the optic portion and d is the length of the haptic portion. In comparison, it is preferable that the length of the haptic portion is longer than the length of the optic portion. If it is smaller than the above range, the optic portion becomes large, increasing the incision section, and if the size of the optic portion is too small, the optic portion cannot be positioned in the center within the capsule bag, causing problems (see FIG. 2). This is a significant difference from conventional intraocular lenses, where the diameter of the haptic portion is 0.5 or less than the diameter of the optic portion.

[0066] The thickness of the haptic portion (200) is preferably 0.3 to 0.5 mm, and the connecting portion having a concave part is preferably thinner, to 6 / 10 to 9 / 10 of the thickness of the haptic portion (200).

[0067] The materials of the optic part (100) and the haptic part (200) may be different materials or have different hardness and flexibility even if they are the same material, but it is more desirable to have the same material as it is easier to manufacture.

[0068] FIG. 5 is a schematic diagram showing the insertion state of an intraocular lens into a capsule bag according to an embodiment of the present invention.

[0069] In the present invention, another intraocular lens enables the haptic part to be strongly and intensively attached to the area where the annular ciliary muscle of the anterior surface of the capsule bag of the lens is attached, when the capsule bag is inserted.

[0070] That is, when the lens changes shape due to the contraction of the annular ciliary muscle during near-distance accommodation, it is desirable for the haptic part to be a loop shape with a thin rim and a large hole in order to receive all of this shape change regardless of the shape of the inner surface of the capsule bag.

[0071] At least three loops of the haptic part induce the force of the lens diameter shrinking into a change in the loop shape, and through the connecting part acting as a lever, the optic part is pushed to the front part (410), thereby enabling the control force to be exerted such that the lens electrode part of the actual human body protrudes when adjusting to near distance.

[0072] Accordingly, when the intraocular lens of the present invention is placed in a capsule bag, the haptic part is first attached to the inner surface corresponding to the outer surface area of ​​the lens to which the anterior annular ciliary muscle is attached, and in particular, the haptic part is in contact with three loops across the inner surface of the anterior part (410), the equatorial plane, and the inner surface of the rear part.

[0073] That is, the haptic portion is preferably in close contact with the entire inner surface of the front portion (410) corresponding to the outer surface area of ​​the lens to which the anterior ciliary muscle of the lens is attached, and is also preferably in close contact with the inner surface of the rear portion through the front portion (410).

[0074] Meanwhile, in all conventional intraocular lenses, the optic portion is fixed to the equatorial region of the lens or at least slightly behind the equatorial region, and the haptic portion is fixed by poking the equatorial region (430). The optic portion of the intraocular lens according to the present invention is positioned at the front of the capsule bag, so that the haptic portion can be strongly and intensively attached to the area where the annular ciliary muscle of the anterior part (410) of the lens is attached and the accommodative force is strongest, as described above.

[0075] In the following description, the intraocular lens of the present invention is inserted using an intraocular lens connecting support (300) to allow the intraocular lens to be seated in a capsule bag and to more sensitively receive the force transmitted from the capsule bag. The aforementioned intraocular lens may be used independently without the intraocular lens connecting support, or it may be used together with the connecting support.

[0076] Accordingly, a desirable intraocular lens connecting support is described. FIG. 6 is a plan view of an intraocular lens connecting support (300) according to one embodiment of the present invention, and FIG. 7 is a cross-sectional view along C-C' of FIG. 6.

[0077] In the present invention, the connecting support (300) maintains the shape of the capsule bag and solves the problem of the anterior and posterior capsules of the capsule bag sticking together, while simultaneously efficiently transmitting the relaxation and contraction of the suspensory ligaments to the intraocular lens, thereby enabling the intraocular lens to provide depth perception vision like a natural lens.

[0078] At the same time, the connecting support (300) of the present invention is equipped with a fixing means (330) of the haptic part (200) to allow the intraocular lens to be accurately positioned at the center of the eye. In addition, the fixing means (330) provides a function to move the intraocular lens forward by a force transmitted from the diaphragm, thereby ensuring excellent vision when viewing a long distance.

[0079] The connecting support (300) is inserted into the internal space of the capsule bag of the human eye before the intraocular lens during cataract surgery, and is fixed with its outer surface (301) in contact with the equatorial portion (430) of the capsule bag, and then when the intraocular lens is inserted, the haptic portion (200) of the intraocular lens is seated on the inner surface (302) of the connecting support (300).

[0080] The connecting support (300) is an open or closed ring-shaped structure, and as shown in FIG. 8, the inner surface (302) and the outer surface (301) both have walls that are convex outwardly on a cross-section in which the structure is cut along a virtual plane in the axial direction (Y direction) of the lens, and the walls include a front section (310), a rear section (320), and a fixing means (330) on the cross-section, with the equator of the support as the boundary.

[0081] The front section (310) is a section located ahead of the equator line, which is a line connecting both ends of the convex vertex of the connecting support body (300), and the rear section (320) is a section extending from the front section (310) and located behind the equator line, which is a line connecting both ends of the convex vertex of the connecting support body (300), and the fixing means (330) is a means provided in one area of ​​the wall to fix the end of the haptic part (200) of the intraocular lens.

[0082] A preferred example of the fixing means (330) is a bending section. The bending section is a section that extends from the rear section (320) and bends inward. At this time, the end of the haptic portion (200) of the intraocular lens is at the point where the inner surface of the rear section (320) and the inner surface of the bending section meet, or is seated on the inner surface of the bending section.

[0083] The point where the inner surface of the rear section (320) meets the inner surface of the bending section forms an area where the end of the haptic part (200) can be seated, and the inner surface of the rear section (320) and the inner surface of the bending section meet to form a seated area. Even if the length of the haptic part (200) is long, it can pass through it and be seated on the inner surface of the bending section.

[0084] That is, when the inner surface of the rear section (320) is curved and the inner surface of the bending section is straight at the point where the inner surface of the rear section (320) and the inner surface of the bending section meet, the angle formed by the tangent line on the inner surface of the rear section (320) and the inner surface of the bending section at the point where the inner surface of the rear section (320) and the inner surface of the bending section meet in cross-section may be 45 to 110 degrees, preferably 60 to 100 degrees.

[0085] Additionally, when the inner surface of the rear section (320) and the inner surface of the bending section meet at the point where the inner surface of the rear section (320) and the inner surface of the bending section meet, the angle formed by the tangent line on the inner surface of the rear section (320) and the tangent line on the inner surface of the bending section at the point where the inner surface of the rear section (320) and the inner surface of the bending section meet in cross-section may be 45 to 110 degrees, preferably 60 to 90 degrees.

[0086] This is because if the above range is exceeded, the leg of the haptic part (200) of the intraocular lens cannot be seated at the point where the inner edge of the bending section or the inner edge of the rear section (320) meets the inner edge of the bending section, and if the above range is less than, the leg of the haptic part (200) cannot be seated on the bending section surface because it passes the meeting point when the leg is long.

[0087] Another example of a fixing means (330) is a protrusion provided on the inner surface (302) of the connecting wall. The protrusion differs from the bending section in that it extends and protrudes from the inner wall surface of the rear section (320) along a ring shape, and the function of seating the legs of the haptic part (200) of the intraocular lens is the same as that of the bending section.

[0088] Another example of the fixing means (330) may be to form an additional seating groove in the aforementioned bending section. By additionally forming the seating groove, the end of the haptic part (200) can be positioned more stably.

[0089] It is preferable that the connecting support (300) has an open section to facilitate insertion during surgery. It is preferable that the open section be open at an angle of 1 to 30° from the center. If it is opened to less than 1°, it becomes difficult to insert into the small incision during surgery, and if it exceeds 30°, the ability of the connecting support (300) to support the intraocular lens may be reduced.

[0090] Meanwhile, when using a connecting support (300), the total diameter of the connecting support (300) can be manufactured to be 9.0 to 12 mm depending on the size of the eyeball.

[0091] The inner surface (302) is preferably a smooth surface so that the haptic portion (200) of the intraocular lens can slide well, and the bending section is bent so that the end of the haptic portion (200) can be seated and stably fixed without detaching.

[0092] The outer surface (301) is a surface that comes into contact with the inner surface (302) of the capsule bag, and comes into contact at least two points. In order to effectively transmit the force transmitted to the capsule bag, it is desirable that an area of ​​at least 1 / 2 to 1 of the cross-sectional length of the outer surface (301) comes into contact with the capsule bag. At this time, more than 1 / 2 of the contacting area must include a section where the chin band is connected to the periphery of the equator. This is to efficiently transmit the force transmitted from the chin band.

[0093] FIG. 8 is a schematic diagram showing the insertion state within a capsule bag of an embodiment according to the present invention.

[0094] According to the present embodiment, when the intraocular lens is first inserted into the capsule bag, the optic portion (100) of the intraocular lens is small and the loop (210) is highly flexible, so it can be inserted through a small incision. Since the inserted intraocular lens has a haptic portion (200) with a predetermined thickness similar to that of the optic portion (100), the haptic portion (200) spreads uniformly inside the capsule bag, positioning the optic portion (100) in the center, and the end of the haptic portion (200) is slightly bent and comes into partial contact with the inner wall surface of the capsule bag.

[0095] Next, when the optic part (100) is moved forward, the connecting part (220) is flexible, so the connecting part (220) is bent backward while angulating forward by about 2 to 10 degrees, that is, the haptic part is bent forward once and then bent backward again, so it comes into contact with the inner wall surface of the front side of the capsule bag over a large area.

[0096] Thus, the force transmitted to the capsule bag can be sufficiently received, and the optic part (100) is stably positioned on the front surface (110a), so that the intraocular lens better mimics the position of the eye's optical system and natural lens, thereby providing natural results in light refraction and focusing.

[0097] The connecting part (220) has several additional effects when angulated forward by about 2 to 10 degrees.

[0098] First, three rings of the haptic part (200) strongly contact the anterior inner wall (especially the anterior part (410) ciliary muscle attachment location) which exerts a stronger control force than the posterior inner wall, thereby maximizing the control force.

[0099] Second, it helps prevent the intraocular lens optic from tilting or decentering.

[0100] Third, in addition, if there is no angulation or there is posterior angulation, the anterior pole of the optic part of the intraocular lens is much flatter than the actual natural lens electrode (anterior pole), so it may move to the anterior part (410) (towards the iris) due to excessive accommodation and come into contact with the iris, causing iritis, or if it comes into more severe contact, it may block the flow of aqueous humor and cause acute glaucoma, so this is to fundamentally prevent such possibility.

[0101] Meanwhile, FIG. 9 is identical to the intraocular lens of the present invention in terms of material and shape, but the bending direction of the haptic part (200) Forward This is a drawing illustrating the shape of intraocular lenses that are not 2 to 10 degrees, when inserted into a capsule bag with a support structure, and when there is no angulation or there is a backward-bent angulation, not only is the centering of the optic part weakened, but there is also a possibility of developing iritis or acute occlusive glaucoma when viewing near or far distances.

[0102] FIG. 10 is an explanatory diagram illustrating the operation of the intraocular lens when the haptic portion (200) of the intraocular lens is seated on the connecting support (300) for the intraocular lens and when looking at a distant and a near distance, respectively. When using the connecting support (300), since the maximum thickness of the connecting support (300) is 0.35 ≤ x ≤ 1, the intraocular lens according to the present invention cannot have the legs of the haptic portion (200) unfolded due to the size of the internal space, and instead bends and extends until it touches the bent section (130) of the connecting support (300).

[0103] Thus, as shown in FIG. 10, the legs of the haptic part (200) extend while in contact with the inner surface (302) of the connecting support (300), and the ends are seated in the bent portion. Therefore, the intraocular lens haptic part (200) extends while in contact with the inner surface (302) of the connecting support (300), so it can effectively receive the force transmitted to the connecting support (300), and since both ends are seated in the bent portion, centering can be achieved more easily.

[0104] Meanwhile, when using the connecting support (300) having the fixing means of the present embodiment, the length (D / 2+d), which is one side length from the center of the optic part of the intraocular lens to the end of the haptic part, is longer than the outer circumference length from the apex of the front part of the capsuleer bag to the fixing means, preferably 105% to 120% of the length to the fixing means. As described above, this allows the ends of the three rings to sufficiently contact the fixing means, and enables the force to be transmitted well inside the capsuleer bag and centering to be easy.

[0105] As described above, by forming the entire length of one side from the center of the intraocular lens to the end of the ring longer than the extended length from the apex of the front part of the capsuleer bag to the inner wall of the connecting support (300) to the bent end, the optic part (100) of the intraocular lens can be positioned ahead of the equator.

[0106] Accordingly, since the optic part (100) is positioned ahead of the equator, the force transmitted from the capsuleer bag to the connecting support body (300) causes the haptic part (200) to deform when viewing a short distance from the force transmitted from the capsuleer bag, and the optic part (100) can move forward, and the corrective effect of increasing the control force can be maximized by moving the optic part (100) forward.

[0107] In other words, since conventional intraocular lenses (IOLs) are positioned at the equator or at least slightly behind it, they are fixed in a shape that is slightly convex backward. Consequently, when force is applied, it causes the intraocular lens to move backward even slightly, resulting in a counterproductive effect on accommodation. However, by moving the intraocular lens of this embodiment forward, high accommodation can be achieved.

[0108] Conversely, when viewing a long distance, the optic part (100) moves slightly backward again, and the mechanism is the opposite of when the optic part (100) moves forward.

[0109] The features, structures, effects, etc. exemplified in each of the aforementioned embodiments may be combined or modified and implemented in other embodiments by a person skilled in the art to which the embodiments belong. Therefore, details regarding such combinations and modifications should be interpreted as being included within the scope of the present invention. Explanation of the symbols

[0110] 100: Optic part 110a: Front surface 120a: Rear side 200: Haptic section 210: Loop 220: Connection 300: Connecting support 301: Turning Away 302: Inner self 310: Forward section 320: Rear section 330: Fixing means 400 : Capsuleer bag 410 : Front 420 : Rear 430 : Equatorial region

Claims

Claim 1 An intraocular lens inserted into a capsule bag and comprising an optic portion (100) and a haptic portion (200), wherein the haptic portion (200) comprises at least three connecting portions (220) connected to the optic portion (100) and ring-shaped loops (210) connected from the connecting portions (220), and the optic portion (100) has a front surface (110a) into which light enters and a rear surface (120a) into which light exits, and the haptic portion (200) forms an angle of 2 to 10˚ toward the front side from a reference line dividing the front surface (110a) and the rear surface (120a). Claim 2 delete Claim 3 In claim 1, the front surface and the rear surface are both of an aspherical shape having a refractive power that is 1.25 to 2.5 D (diopters) higher than the refractive power of the central portion. Claim 4 In paragraph 3, the rear surface (120a) and the front surface (110a) are both biconvex in the form of an intraocular lens. Claim 5 In claim 1, the thickness of the haptic portion is 0.4 to 0.5 mm, an intraocular lens. Claim 6 An intraocular lens according to claim 1, wherein the area ratio between the ring-shaped loop (210) and the optic part (100) is 1:2 to 1:2.

5. Claim 7 In claim 1, the total outer diameter (R) including the optic portion (100) and the haptic portion (200) is 5 to 40% longer than the (cross-sectional) length of the front portion (410) of the capsuler bag. Claim 8 In claim 1, the length (d) of the haptic portion is 0.7 to 1.0 times the diameter length (D) of the optic portion, in an intraocular lens. Claim 9 In claim 1, the intraocular lens is an intraocular lens that is positioned in front of the center of the capsule bag after being inserted into the capsule bag. Claim 10 In claim 1, the intraocular lens is inserted into the capsule bag, and then the haptic part (200) is installed to contact the capsule bag while bending toward the rear. Claim 11 In claim 1, when the radius of the center forming the spherical surface of the front surface of the optic part is R1 and the radius of the center forming the spherical surface of the rear surface is R2, the intraocular lens is equal to or greater than R2. Claim 12 In claim 11, the front and rear surfaces of the optic part form an aspherical surface that is convex in the center and becomes flatter toward the edges, forming an intraocular lens. Claim 13 In claim 11, the above R1 / R2 value is 1.1 to 2, an intraocular lens. Claim 14 In claim 8, an intraocular lens in which the length of the haptic part (d) is longer than the length of the optic part (D / 2), where the length of the haptic part is denoted as D / 2 and the length of the haptic part is denoted as d. Claim 15 An intraocular lens assembly inserted into a capsule bag having a front portion, an equatorial portion, and a rear portion, comprising an intraocular lens and an intraocular lens connecting support, wherein the intraocular lens has an optic portion (100), a connecting portion (220) connected to the optic portion (100), and a haptic portion comprising at least three ring-shaped loops (210) connected from the connecting portion (220), and the intraocular lens connecting support comprises a fixing means (330) to which the loop (210) of the intraocular lens contacts and to which the end of the loop (210) is fixed, and the optic portion (100) has a front surface (110a) into which light enters and a rear surface (120a) into which light exits, and the haptic portion (200) forms an angle of 2 to 10˚ toward the front side from a reference line dividing the front surface (110a) and the rear surface (120a). Assembly. Claim 16 In claim 15, the intraocular lens connecting support (300) is a ring-shaped structure provided inside along the equatorial portion of a capsular bag, and in a cross-section cut along the visual axis direction, the wall of the structure has an inner surface (302) and an outer surface (301) that are convex toward the capsular bag, and the wall includes a front section (310) located forward in the visual axis direction and a rear section (320) extending from the front section (310) and located behind the equatorial portion, thereby forming an intraocular lens assembly. Claim 17 In claim 15, the optic part is an intraocular lens assembly located between the front part of the capsuler bag and the equatorial part. Claim 18 In claim 16, the haptic part is an intraocular lens assembly that is first closely attached to the inner surface of the front part of the capsuler bag, the haptic part including an inner area corresponding to the area where the diaphragm is connected to the outer surface of the capsuler bag. Claim 19 In claim 18, the optic part (100) has a front surface (110a) into which light enters and a rear surface (120a) into which light exits, and the haptic part (200) is installed to contact the capsuleer bag by extending forward at an angle of 2 to 10˚ from a reference line dividing the front surface (110a) and the rear surface (120a). Claim 20 In claim 19, the intraocular lens assembly, wherein (D / 2+d), which is one-sided length from the center of the optic portion to the end of the haptic portion of the intraocular lens, is longer than the outer circumference length from the apex of the front portion of the capsuler bag to the fixing means.

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