Accommodating intraocular lenses for restoring forces

Abstract

The invention relates to an adjustable intraocular lens (1) for insertion into a capsular bag (4) of an eye, the adjustable intraocular lens having a first lens part (2) and a second lens part (3), the first lens part comprising a first membrane (5) and an optical axis (16), the second lens part being detachably connectable to the first lens part, thereby enabling the intraocular lens to be turned into a connected state.

Description

[0001] The present invention relates to an accommodating intraocular lens for generating a restoring force.

[0002] The natural lens of the eye allows for clear vision of distant and nearby objects. This is achieved by the ability of the lens of the eye to change its shape and thus the refractive power. The lens of the eye is contained in a capsular bag, which is suspended from zonular fibers, which in turn are connected to the ciliary muscles. When the ciliary muscles relax, the zonular fibers tighten, stretching the capsular bag. In the case of the soft lens of the eye, the change in the shape of the capsular bag causes the shape of the soft lens to also change. As the capsular bag is stretched, the lens of the eye becomes increasingly flatter. This changes the refractive power of the lens of the eye. The flattening of the lens of the eye causes a lower refractive power and therefore allows for clear vision at a distance. This process is reversible, so that when the ciliary muscles are tensed, the zonular fibers relax and the capsular bag is less stretched. As a result, the lens of the eye takes on a more curved shape and therefore achieves a higher refractive power. This allows for clear vision of nearby objects. This change in the focal plane is called accommodation.

[0003] Normally, the lens of the eye loses its elasticity with age. Then, the lens of the eye is no longer able to change its shape in response to the contraction of the ciliary muscles. This makes it increasingly difficult to focus on close objects. This condition is called presbyopia. By wearing glasses or contact lenses, the missing refractive power can be compensated. However, with age, the lens of the eye becomes increasingly inelastic and hard, and can also become cloudy. In medicine, this condition of the lens of the eye is called cataract. Spectacle lenses cannot compensate for the consequences of the cloudy lens of the eye, so it has become common to remove the cloudy lens by surgery. For this purpose, for example, a needle that vibrates with ultrasound is inserted into the eye and the hard and cloudy lens of the eye is crushed into small particles. This process is called phacoemulsification. After this phacoemulsification is carried out, the particles are sucked out until the capsular bag has been separated from the natural lens of the eye. In order to achieve good vision again, an artificial lens of the eye is then implanted in the capsular bag. Such an artificial lens of the eye is called an intraocular lens.

[0004] An artificial lens for the eye is usually a lens with a single focus (monofocal), so that after the artificial lens of the eye has been implanted, the patient needs glasses or contact lenses in order to see clearly both far and near. However, it is also considered to design an artificial lens for the eye in such a way that it can be adjusted by changing the focal plane. Such an artificial lens for the eye is also called an adjustable intraocular lens. Tightening or relaxing the ciliary muscles should make it possible to change the shape of the artificial lens and therefore its refractive power. It is desirable to provide an artificial lens for the eye which also has mechanical properties similar to the natural lens of the eye.

[0005] US2010 / 0 179 653A1 discloses an accommodative intraocular lens. US2014 / 0 368 789A1 discloses an adaptive lens system.

[0006] It is therefore an object of the present invention to provide an accommodating intraocular lens having mechanical properties similar to the natural lens of the eye.

[0007] A first adjustable intraocular lens for insertion into a capsular bag of an eye according to the present invention comprises a first lens portion and a second lens portion. The first lens portion comprises a light-transmitting lens component, the light-transmitting lens component comprising a distal surface of the lens component and a proximal surface of the lens component. In addition, the first lens portion comprises a light-transmitting first membrane, which is arranged adjacent to the distal surface of the lens component and defines a cavity together with the lens component. The first lens portion also has an optical axis. The second lens portion can be detachably coupled to the first lens portion, thereby enabling the intraocular lens to be transferred to a coupled state, in which the second lens portion is arranged distal to the first lens portion and is configured to deform the first membrane by longitudinally displacing the second lens portion parallel to the optical axis. The second lens portion comprises a first component and a second component, the first component forming the distal end of the second lens portion and having an axial through hole in the first component, the second component being configured to deform the first membrane and having an axial through hole in the second component. The optical axis extends through the axial through hole in the first component and the axial through hole in the second component. The end of the first component and the end of the second component are fixedly connected to each other. In the connected state, the end of the first component and the end of the second component are arranged on the outside in the radial direction relative to the optical axis. The first component and the second component are configured to shift toward each other when the stretching of the capsule increases, thereby generating a restoring force.

[0008] A second adjustable intraocular lens for insertion into a capsular bag of an eye according to the present invention comprises a first lens portion and a second lens portion. The first lens portion comprises a light-transmitting lens component, the light-transmitting lens component comprising a distal surface of the lens component and a proximal surface of the lens component. In addition, the first lens portion comprises a light-transmitting first membrane, which is arranged adjacent to the distal surface of the lens component and defines a cavity together with the lens component. The first lens portion also has an optical axis. The second lens portion can be detachably coupled to the first lens portion, thereby enabling the intraocular lens to be transferred to a coupled state, in which the second lens portion is arranged distal to the first lens portion and is configured to deform the first membrane by longitudinally displacing the second lens portion parallel to the optical axis. The second lens portion comprises a first component and a second component, the first component forming the distal end of the second lens portion and having an axial through hole in the first component, the second component extending at least to the lens component in the direction of the optical axis and having an axial through hole in the second component. The optical axis extends through the axial through hole in the first component and the axial through hole in the second component. The end of the first component and the end of the second component are fixedly connected to each other. In the connected state, the end of the first component and the end of the second component are arranged on the outside in the radial direction relative to the optical axis. The first component and the second component are configured to shift toward each other when the stretching of the capsule increases, thereby generating a restoring force.

[0009] The arrangement of the lens components, the cavity and the first membrane is configured for optical imaging, whereby the first lens portion has an optical axis. An incision is introduced in the capsular bag in order to insert the intraocular lens into the capsular bag of the eye. The first lens portion is first inserted into the capsular bag via the incision, and then the second lens portion is inserted into the capsular bag. The second lens portion is arranged in the capsular bag so that the intraocular lens reaches a coupled state. Since the membrane is deformed due to the longitudinal displacement of the second lens portion, the radius of curvature of the membrane changes. By means of the membrane changing its radius of curvature, the membrane changes its diopter, as a result of which the eye can achieve accommodation of distant or near objects.

[0010] The restoring force is generated because the capsular bag is stretched more when the ciliary muscles relax. As a result, the front area of ​​the capsular bag is pressed against the first component. In the first intraocular lens according to the invention, the rear area of ​​the capsular bag is pressed against the second component via the first lens part. In the second intraocular lens according to the invention, the second component is in contact with the rear area of ​​the capsular bag, so that the rear area of ​​the capsular bag is directly pressed against the second component. As a result, the first component and the second component are displaced toward each other, thereby generating a restoring force. When the ciliary muscles are tensioned again after relaxation, the restoring force causes the capsular bag to be stretched less again. As a result, the intraocular lens has mechanical properties similar to the natural lens of the eye.

[0011] For the second intraocular lens according to the present invention, it is preferred that the first component includes a cylindrical portion which forms an inner end of the first component in a radial direction in a coupled state and which contacts the first lens portion.

[0012] For the second intraocular lens according to the present invention, it is preferred that the second component extends at least to the proximal side of the first lens part in the axial direction. For the second intraocular lens according to the present invention, it is also preferred that the proximal surface of the second component has a convexly curved embodiment. As a result, the posterior region of the capsular bag can be closely abutted against the second component, thereby avoiding damage to the tissue of the posterior region of the capsular bag due to the second component.

[0013] For both intraocular lenses according to the present invention, it is preferred that the maximum extension of the first component and / or the second component in the radial direction is at least 8.5 mm. As a result, the capsular bag can be expanded laterally and kept unfolded both in the non-stretched state and in the stretched state. As a result, damage to the tissue of the capsular bag can be prevented. For example, the maximum extension can be at most 10.0 mm.

[0014] For both intraocular lenses according to the invention it is preferred that the lens component is a second film or an optical body.

[0015] For the two intraocular lenses according to the present invention, the Young's modulus of the first component and the Young's modulus of the second component are preferably 1.5 MPa to 5.0 MPa. For the two intraocular lenses according to the present invention, the Young's modulus of the first film and / or the Young's modulus of the second film are preferably not more than 3 MPa, in particular 1.5 MPa to 2.0 MPa.

[0016] For both intraocular lenses according to the invention, it is preferred that the second lens part comprises a further lens. In this context, it is particularly preferred that the optical axis of the further lens substantially coincides with the optical axis of the first lens part. For example, the further lens may be toric. This may advantageously correct astigmatism. It is also conceivable that the further lens has a non-accommodative embodiment.

[0017] For both intraocular lenses according to the invention, the distal surface of the first component preferably has a convexly curved embodiment. As a result, the surface of the first component that contacts the capsular bag has the shape of the capsular bag. As a result, the anterior region of the capsular bag can be particularly closely abutted against the first component, whereby damage to the tissue of the capsular bag due to the first component can be avoided.

[0018] For the two intraocular lenses according to the present invention, the first component and / or the second component preferably has a plurality of radial through holes, through which liquid can flow from the inner side of the second lens part in the radial direction to the outer side of the second lens part in the radial direction. Due to the radial through holes, there is more flow in the capsular bag than in the case without the radial through holes, which can reduce the possibility of secondary cataract.

[0019] For both intraocular lenses according to the present invention, preferably, the second lens part includes a plurality of feet, which form the outer end of the second lens part in the radial direction in the axial region, protrude from the rest of the second lens part in the proximal direction, and are arranged adjacent to each other in the circumferential direction relative to the optical axis. The feet allow a particularly large area of ​​the capsular bag to expand, and since the feet are arranged at intervals from each other, flow can occur between the feet, thereby reducing the possibility of secondary cataracts. The feet are particularly preferably configured to retain the first lens part, in particular the lens component, in a coupled state, and thus to center the first lens part relative to the second lens part. To this end, the feet can be designed to be rotationally symmetrical, for example, relative to the optical axis.

[0020] The invention is explained in more detail below with reference to the accompanying schematic drawings, in which:

[0021] Figure 1 shows a longitudinal section of a first embodiment of an accommodating intraocular lens according to the invention, wherein the capsular bag is in a non-stretched state,

[0022] Figure 2 Shown according to Figure 1 Longitudinal section of an intraocular lens with the capsular bag in a stretched state.

[0023] Figure 3 shows a longitudinal section of a second embodiment of an accommodating intraocular lens according to the invention, and

[0024] Figure 4 A longitudinal section through a third embodiment of an accommodating intraocular lens according to the invention is shown.

[0025] Figure 1 and Figure 2According to a first embodiment of an accommodative intraocular lens 1 for insertion into a capsular bag 4 of an eye, the intraocular lens 1 comprises a first lens part 2 and a second lens part 3. The first lens part 2 comprises: a light-transmissive lens component 7, comprising a distal surface 13 of the lens component 7 and a proximal surface 14 of the lens component 7; a light-transmissive first membrane 5, which is arranged adjacent to the distal surface 13 of the lens component 7 and defines a cavity 10 together with the lens component 7; and an optical axis 16. The second lens part 3 can be detachably coupled to the first lens part 2, whereby the intraocular lens 1 can be turned into a coupled state, in which the second lens part 3 is arranged distally 17 of the first lens part 2 and is configured to deform the first membrane 5 by longitudinally displacing the second lens part 3 parallel to the optical axis 16. The second lens part 3 comprises a first component 21, which forms the distal end of the second lens part 3 and has an axial through hole 22 in the first component 21, and a second component 23, which extends at least to the lens part 7 in an axial direction 54 relative to the optical axis 15 and has an axial through hole 24 in the second component 23. The optical axis 16 extends through the axial through hole 22 in the first component 21 and the axial through hole 24 in the second component 23. The end of the first component 21 and the end of the second component 23 are fixedly connected to each other, and in the coupled state, the end of the first component and the end of the second component are arranged on the outside in the radial direction 55 relative to the optical axis 16, and the first component 21 and the second component 23 are configured to be displaced towards each other in the event of an increase in the stretching of the capsular bag 4, thereby generating a restoring force.

[0026] from Figure 3 and Figure 4As is apparent from the figure, according to the second and third embodiments of the adjustable intraocular lens 1 for insertion into the capsular bag 4 of the eye, the intraocular lens 1 comprises a first lens part 2 and a second lens part 3. The first lens part 2 comprises: a light-transmitting lens component 7, which comprises a distal surface 13 of the lens component 7 and a proximal surface 14 of the lens component 7; a light-transmitting first membrane 5, which is arranged adjacent to the distal surface 13 of the lens component 7 and defines a cavity 10 together with the lens component 7; and an optical axis 16. The second lens part 3 can be detachably coupled to the first lens part 2, whereby the intraocular lens 1 can be turned to a coupled state, in which the second lens part 3 is arranged distally 17 of the first lens part 2 and is configured to deform the first membrane 5 by longitudinally displacing the second lens part 3 parallel to the optical axis 16. The second lens part 3 comprises a first component 21, which forms the distal end of the second lens part 3 and has an axial through hole 22 in the first component 21, and a second component 23, which is configured to deform the first membrane 5 and has an axial through hole 24 in the second component 23. The optical axis 16 extends through the axial through hole 22 in the first component 21 and the axial through hole 24 in the second component 23. The end of the first component 21 and the end of the second component 23 are fixedly connected to each other, and in the coupled state, the end of the first component and the end of the second component are arranged on the outside in the radial direction 55 relative to the optical axis 16, and the first component 21 and the second component 23 are configured to be displaced toward each other in the case of increased stretching of the capsular bag 4, thereby generating a restoring force.

[0027] Figure 1 The capsular bag 4 is depicted in a non-stretched state, wherein the zonular fibers 15 attached to the capsular bag 4 have become relaxed. Figure 2 The ciliary muscle (not shown) is shown to relax so that the zonular fibers 15 are tightened, whereby the capsular bag 4 reaches a stretched state. As a result, the anterior region 52 of the capsular bag 4 is pressed against the first component 21. The posterior region 53 of the capsular bag 4 is pressed against the second component 23, wherein according to the first embodiment, the posterior region 53 of the capsular bag 4 is directly pressed against the first component 21, and according to the second and third embodiments, the posterior region 53 is indirectly pressed against the second component 23 via the first lens part 2. As a result, the first component 21 and the second component 23 are displaced toward each other, whereby a restoring force is generated. When the zonular fibers 15 relax again due to the tension of the ciliary muscle, the capsular bag 4 returns to the position according to the first lens part 21 due to the restoring force. Figure 1 non-stretched state.

[0028] from Figure 1 and Figure 2As is apparent from the figure, according to the first embodiment, the first component 21 may include a cylindrical portion 26 which, in the coupled state, forms the inner end of the first component 21 in the radial direction 55 and which is in contact with the first lens part 2. In this case, the cylindrical portion 26 may protrude from the rest of the first component 21 toward the first lens part 2 in the axial direction 54 relative to the optical axis 16.

[0029] Figure 1 and Figure 2 It is shown that according to the first embodiment, when in the coupled state, the second component 23 may extend in the axial direction 54 at least to the proximal side 8 of the first lens part 2. It is also evident that the proximal surface 44 of the second component 23 may have an embodiment of a convex curvature.

[0030] Compare Figure 3 and Figure 4 According to the second and third embodiments, the second component 23 may include a sheet portion 31 which contacts the first lens part 2 and defines an axial through hole 24 in the second component 23. In the coupled state, the sheet portion 31 and the first component 21 may define an intermediate space 25 of the second lens part 3 in the axial direction 54. The intermediate space 25 may be open inwardly in the radial direction.

[0031] For all embodiments, the first component 21 and / or the second component 23 can extend to the equator 51 of the bladder 4, which separates the front region 52 of the bladder 4 from the rear region 53 of the bladder. To this end, the maximum extension of the first component 21 and / or the second component 23 in the radial direction 55 can be at least 8.5 mm. For example, the maximum extension in the radial direction 55 can be at most 10.0 mm.

[0032] from Figures 1 to 4 As is evident from the figure, the first lens part 2 may include a plurality of bending elements 9 arranged at the distal surface 11 of the first membrane 5 and spaced apart from one another in a circumferential direction 56 relative to the optical axis 16. In the first embodiment, the bending elements 9 are in contact with the first component 21, in particular with the cylindrical portion 26. In the second and third embodiments, the bending elements 9 are in contact with the second component 23.

[0033] Figure 1 and Figure 2 It is shown that the lens component 7 may be, for example, an optical body 8 . Figure 3 and Figure 4 It is shown that the lens component 7 may be, for example, the second film 6 .

[0034] The Young's modulus of the first component 21 and the Young's modulus of the second component 23 may be 1.5 MPa to 5.0 Pa. The Young's modulus of the first film 5 and / or the Young's modulus of the second film 6 may be not more than 3 MPa, specifically 1.5 MPa to 2 MPa.

[0035] Figure 1 and Figure 2 It is shown that the second lens part 3 can include a further lens 27. In this context, in the coupled state, the optical axis of the further lens 27 can substantially coincide with the optical axis 16 of the first lens part 2. For example, the further lens 27 can be toric. As a result, astigmatism can be corrected by the further lens. Furthermore, it is conceivable that the further lens 27 has a non-accommodative embodiment; that is, the further lens cannot change its refractive power compared to the first lens part 2.

[0036] from Figures 1 to 4 As is evident from FIG. 4 , the distal surface 41 of the first component 21 may have a convexly curved embodiment.

[0037] Figure 4 It is shown that the first component 21 and / or the second component 23 may have a plurality of radial through holes 28 through which liquid can flow from the inner side of the second lens part 3 in the radial direction 55 to the outer side of the second lens part 3 in the radial direction 55 .

[0038] Figure 4 It is also shown that the second lens part 3 can include a plurality of feet 29 which in the axial region form the outer end of the second lens part 3 in the radial direction 55, protrude from the rest of the second lens part 3 in the proximal direction and are arranged adjacent to each other in the circumferential direction 56 relative to the optical axis 16. The feet 29 can be configured to retain the first lens part 2, in particular the lens component 7, in the coupled state and thus center the first lens part 2 relative to the second lens part 3. For the purpose of centering, the feet 29 can, for example, be arranged rotationally symmetrically relative to the optical axis 16. For retaining the first lens part 2, the feet 29 can each have a radial protrusion 30 which protrudes from the feet 29 in the direction of the optical axis 16. The radial protrusions 30 can be configured to clamp the first lens part 2, in particular the haptics 19 of the first lens part 2, between the radial protrusions 30 and the capsular bag 4 in the coupled state.

[0039] List of Reference Numerals

[0040] 1. Adjustable intraocular lens

[0041] 2 First lens part

[0042] 3 Second lens part

[0043] 4 Pouch

[0044] 5. First Film

[0045] 6 Second membrane

[0046] 7 Lens components

[0047] 8 Optical body

[0048] 9 Bending elements

[0049] 10 Cavity

[0050] 11 Distal surface of first membrane

[0051] 12 Proximal surface of first membrane

[0052] 13 Distal surface of lens component

[0053] 14 Proximal surface of lens component

[0054] 15 zonular fibers

[0055] 16 Optical axis

[0056] 17 Distal to the first lens portion

[0057] 18 Proximal side of first lens portion

[0058] 19 loop

[0059] 21 First Part

[0060] 22 Axial through hole in first component

[0061] 23 Second Part

[0062] 24 Axial through hole in second component

[0063] 25 In-between Space

[0064] 26 Cylindrical part

[0065] 27 Another Lens

[0066] 28 Radial through holes

[0067] 29 Feet

[0068] 30 Radial protrusion

[0069] 31 Flake part

[0070] 41 Distal surface of the first component

[0071] 42 proximal surface of the first component

[0072] 43 distal surface of the second component

[0073] 44 proximal surface of the second component

[0074] 51 Equator of the Capsule

[0075] 52 Anterior region of the bladder

[0076] 53 Posterior region of the capsular bag

[0077] 54 Axial direction

[0078] 55 Radial direction

[0079] 56 Circumferential direction

Claims

1. An accommodative intraocular lens for insertion into a capsular bag (4) of an eye, the accommodative intraocular lens comprising: a first lens portion (2), the first lens portion comprising a light-transmitting lens component (7), a light-transmitting first membrane (5), and an optical axis (16), the light-transmitting lens component comprising a distal surface (13) of the lens component (7) and a proximal surface (14) of the lens component (7), the light-transmitting first membrane being arranged adjacent to the distal surface (13) of the lens component (7) and defining a cavity (10) together with the lens component (7); and a second lens portion (3), the second lens portion being detachably connectable to the first lens portion (2), thereby enabling the intraocular lens (1) to be transferred to a connected state, in which the second lens portion (3) is arranged distally (17) of the first lens portion (2) and is configured to be longitudinally displaced parallel to the optical axis (16) by causing the second lens portion (3) to be displaced longitudinally. The first film (5) is deformed, and the second lens part (3) includes a first component (21) and a second component (23), the first component forming the distal end of the second lens part (3) and having an axial through hole (22) in the first component (21), the second component being configured to deform the first film (5) and having an axial through hole (24) in the second component (23), the optical axis (16) extending through the axial through hole (22) in the first component (21) and the axial through hole (24) in the second component (23), the first component (21) and the second component (23) being fixedly connected to each other at their ends, in the connected state, the end of the first component and the end of the second component are arranged on the outside in a radial direction (55) relative to the optical axis (16), the first component (21) and the second component (23) being configured to shift toward each other when the stretching of the capsular bag (4) increases, thereby generating a restoring force.

2. An accommodative intraocular lens for insertion into a capsular bag (4) of an eye, the accommodative intraocular lens comprising: a first lens portion (2), the first lens portion comprising a light-transmitting lens component (7), a light-transmitting first membrane (5), and an optical axis (16), the light-transmitting lens component comprising a distal surface (13) of the lens component (7) and a proximal surface (14) of the lens component (7), the light-transmitting first membrane being arranged adjacent to the distal surface (13) of the lens component (7) and being in contact with the proximal surface (14) of the lens component (7); The invention relates to an intraocular lens (1) and a second lens part (3) which can be detachably connected to the first lens part (2), thereby enabling the intraocular lens (1) to be transferred to a connected state, in which the second lens part (3) is arranged on the distal side (17) of the first lens part (2) and is configured to change the first membrane (5) by longitudinally displacing the second lens part (3) parallel to the optical axis (16). The second lens part (3) comprises a first part (21) and a second part (23), the first part forming the distal end of the second lens part (3) and having an axial through hole (22) in the first part (21), the second part extending at least to the lens part (7) in an axial direction (54) relative to the optical axis (16) and having an axial through hole (24) in the second part (23), the optical axis (16) extending through the axial through hole (22) in the first part (21) and the axial through hole (24) in the second part (23), the first part (21) and the second part (23) being fixedly connected to each other at their ends, in the coupled state, the end of the first part and the end of the second part are arranged on the outside in a radial direction (55) relative to the optical axis (16), the first part (21) and the second part (23) being configured to shift toward each other in the event of an increase in the stretching of the capsular bag (4), thereby generating a restoring force.

3. The intraocular lens according to claim 2, wherein: The first component (21) comprises a cylindrical portion (26) which forms the inner end of the first component (21) in the radial direction (55) in the coupled state and is in contact with the first lens part (2).

4. The intraocular lens according to claim 2 or 3, wherein: The second component (23) in the coupled state extends along the axial direction (54) at least to the proximal side (8) of the first lens part (2).

5. The intraocular lens according to claim 4, wherein: The proximal surface (44) of the second component (23) is embodied to be convexly curved.

6. The intraocular lens according to any one of claims 1 to 3, wherein: The maximum extension of the first component (21) and / or the second component (23) in the radial direction (55) is at least 8.5 mm.

7. The intraocular lens according to any one of claims 1 to 3, wherein: The Young's modulus of the first component (21) and the Young's modulus of the second component (23) are 1.5 MPa to 5.0 MPa.

8. The intraocular lens according to any one of claims 1 to 3, wherein: The second lens part (3) comprises another lens (27).

9. The intraocular lens according to claim 8, wherein: The further lens (27) is embodied torsionally and / or non-accommodatively.

10. The intraocular lens according to any one of claims 1 to 3, wherein: The distal surface (41) of the first component (21) is embodied to be convexly curved.

11. The intraocular lens according to any one of claims 1 to 3, wherein: The first component (21) and / or the second component (23) has a plurality of radial through holes (28), through which liquid can flow from the inner side of the second lens part (3) in the radial direction (55) to the outer side of the second lens part (3) in the radial direction (55).

12. The intraocular lens according to any one of claims 1 to 3, wherein: The second lens part (3) comprises a plurality of feet (29), which form the outer end of the second lens part (3) in the radial direction (55) in the axial region, protrude in the proximal direction from the rest of the second lens part (3), and are arranged adjacent to each other in the circumferential direction (56) relative to the optical axis (16).

13. The intraocular lens according to claim 12, wherein: The feet (29) are configured to maintain the first lens part (2) in the coupled state and thereby center the first lens part (2) relative to the second lens part (3).

14. The intraocular lens of claim 12, wherein: The feet (29) are configured to maintain the lens component (7) in the coupled state and thereby center the first lens part (2) relative to the second lens part (3).

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