WO2017026771A1

WO2017026771A1 - Adjustable intraocular lens

Info

Publication number: WO2017026771A1
Application number: PCT/KR2016/008747
Authority: WO
Inventors: 현동원
Original assignee: 현동원
Priority date: 2015-08-13
Filing date: 2016-08-09
Publication date: 2017-02-16

Abstract

The present invention relates to an adjustable intraocular lens which allows external light to be selectively transmitted therethrough. The present invention comprises: a lens body having a front surface, a rear surface, and a central optical part convexly formed in a first direction; a plurality of support parts extending in a radial direction at the edge of the lens body; and an optical fiber part which is disposed on the outside of the central optical part and surrounds the central optical part.

Description

Adjustable intraocular lens

The present invention relates to an intraocular lens, and more particularly to an adjustable intraocular lens implanted in the human eye.

In general, intraocular lens (IOL) refers to an intraocular lens implanted into the eye in place of the clouded lens of a cataract patient.

Such intraocular lens implantation is a method of removing a cataract from a cataract patient and inserting an intraocular lens (artificial intraocular lens) made of artificial material as a substitute to replace the role of eyeglasses or contact lenses after surgery. Currently, many are implemented worldwide.

In this case, cataract is a disease in which the lens of the eye becomes cloudy and external light cannot be clearly formed in the retina, and the vision is poor. It is common practice to insert an intraocular lens (artificial lens) made of various materials that do not cause complications.

In order to implant an intraocular lens so that a patient can see a near or far object clearly, research on the shape and the material of the intraocular lens is continued. For example, there is a method of injecting a liquid such as water into the intraocular lens to perform a multifocal function, or changing the shape of the intraocular lens to adjust the focus.

US Patent Publication No. 2009-0088840 (name of the invention: ZONAL DIFFRACTIVE MULTIFOCAL INTRAOCULAR LENSES) discloses a technique for forming a refractive region on the surface of a lens to provide a multifocal guide lens.

Embodiments of the present invention are to provide an adjustable intraocular lens with improved visibility by aligning the light incident on the intraocular lens.

According to an aspect of the present invention, there is provided a lens body having a front surface and a rear surface, and having a central optical portion formed convexly in a first direction, a plurality of support portions and at least a portion extending radially from an edge of the lens body. An adjustable intraocular lens is disposed to be included inside the unit and includes an optical fiber unit disposed to circumscribe the central optical unit outside the central optical unit.

The adjustable intraocular lens according to an embodiment of the present invention transmits light incident on the central optical unit, but selectively transmits light incident on the optical fiber unit to clearly form an image. The depth of focus may be improved by aligning the light incident on the optical fiber part. In addition, the adjustable intraocular lens adjusts the amount of light passing through the central optical unit, thereby controlling the brightness of the image formed on the retina. Of course, the scope of the present invention is not limited by these effects.

1 is a perspective view showing an adjustable intraocular lens according to an embodiment of the present invention.

FIG. 2 is a plan view illustrating the adjustable intraocular lens of FIG. 1.

3 is a cross-sectional view taken along line III-III of FIG. 1.

4 is a cross-sectional view illustrating a modified example of the adjustable intraocular lens of FIG. 1.

5A to 5F are cross-sectional views illustrating another modified example of the adjustable intraocular lens of FIG. 1.

6 is a perspective view showing an adjustable intraocular lens according to another embodiment of the present invention.

FIG. 7 is a cross-sectional view taken along the line VIII-VIII of FIG. 6.

8A to 8G are cross-sectional views illustrating a modified example of the adjustable intraocular lens of FIG. 6.

9 is a perspective view showing an adjustable intraocular lens according to another embodiment of the present invention.

10A is a cross-sectional view of the human eye showing a natural lens.

10B is a cross-sectional view of the human eye with the adjustable intraocular lens of FIG. 1 inserted.

11 is a conceptual diagram illustrating that external light is incident on the adjustable intraocular lens of FIG. 1.

In addition, the refractive index of the optical fiber part may be different from the refractive index of the central optical part.

In addition, the optical fiber unit may be disposed such that the longitudinal direction and the first direction of the optical fiber unit forms a predetermined angle.

In addition, the lens body may include a transition part surrounding the central optical part, the optical fiber part is disposed, and an edge part surrounding the transition part and to which the plurality of support parts are connected.

In addition, the thickness of the transition part in the first direction may become thinner from the central optical part toward the edge part.

The optical fiber unit may include a first fiber unit disposed adjacent to the central optical unit and a second fiber unit disposed radially adjacent to the first fiber unit.

The length of the first fiber portion and the angle formed by the first direction may be smaller than the angle formed by the length direction of the second fiber portion and the second direction.

In addition, the optical fiber portion may be disposed in a plurality in the radial direction of the central optical portion, the diameter of the optical fiber portion may be reduced in the radial direction.

In addition, the optical fiber unit may extend from the front surface of the lens body to the rear surface.

In addition, the optical fiber unit may be inserted into the front or rear of the lens body.

In addition, the optical fiber unit may be disposed inside the lens body.

The optical fiber unit may be disposed closer to the front surface than the rear surface of the lens body or adjacent to the rear surface than the front surface of the body.

In addition, the optical fiber unit may be formed so that the outer wall tapered in the first direction.

In addition, the optical fiber portion may be selected from any one of glass fiber and optical fiber.

In addition, at least some of the external light incident on the optical fiber part may be totally reflected at the inner wall of the optical fiber part. Further, the external light toward the central optical part passes through the central optical part and the external light toward the optical fiber part. May selectively pass depending on the angle of incidence.

In addition, a light absorbing paint may be applied to the outer wall of the optical fiber unit.

The invention will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the art to which the present invention pertains. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Meanwhile, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or elements. Or does not exclude additions. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another.

1 is a perspective view illustrating an adjustable intraocular lens 100 according to an embodiment of the present invention, FIG. 2 is a plan view of the adjustable intraocular lens 100 of FIG. 1, and FIG. 3 is III of FIG. 1. Sectional view taken along line -III.

1 to 3, the adjustable intraocular lens 100 may include a lens body 150, an optical fiber unit 160, and a support unit 170. The adjustable intraocular lens 100 may remove some or all of the natural lens of the human eye 17 (see FIG. 10A) and may be implanted in the removed portion.

Hereinafter, the angle of incidence of light incident on the adjustable intraocular lens 100 is defined as an angle between the direction of the center line CL in the thickness direction of the adjustable intraocular lens 100 and the direction of incident light. Therefore, the small angle of incidence means that light is incident almost perpendicularly to the adjustable intraocular lens 100, and the large incidence angle means that the adjustable intraocular lens 100 is positioned at the side of the adjustable intraocular lens 100. It means to be incident toward.

The lens body 150 may have a front surface 150a and a rear surface 150b. The front surface 150a corresponds to a region where external light is incident. The rear face 150b corresponds to the front face 150a and corresponds to an area in contact with the capsular bag of the person or facing toward the retina. External light may enter the front surface 150a and move the lens body 150 to pass through the rear surface 150b.

The lens body 150 may include a central optical unit 110, a transition unit 120 on which the optical fiber unit 160 is disposed, and an edge unit 130. The lens body 150 is an area through which external light is transmitted, and is typically used as an optic.

The lens body 150 may be made of a relatively hard material, a relatively soft flexible semi-rigid material, or a combination of these hard materials and soft materials. For example, the lens body 150 may be polymethyl methacrylate (PMMA), polysulfone (PSF), or other relatively hard biologically inert optical material. The lens body 150 may also be a silicone inert, hydrogel, thermolabile materials, and other flexible, inert, biologically inert optical materials.

The central optic zone 110 may be convex in the first direction, which is the thickness direction of the lens body 150. The central optical unit 110 may have the front surface 150a convex in the first direction or the rear surface 150b may be convex in the first direction. In addition, as shown in FIG. 3, the front surface 150a and the rear surface 150b may be convex. However, hereinafter, the front surface 150a and the rear surface 150b will be described in a convex manner for convenience of description.

The central optical unit 110 may be disposed at the center of the lens body 150. The central optical unit 110 may receive most of the external light incident on the adjustable intraocular lens 100. The central optics 110 may be aligned to the macula when the adjustable intraocular lens 100 is implanted in the human eye.

The transition part 120 may surround the central optical part 110, and the optical fiber part 160 may be disposed. The transition part 120 may be formed such that the thickness in the first direction decreases from the central optical part 110 to the edge part 130. In addition, the transition part 120 may have a predetermined groove to distinguish the central optical part 110 and the edge part 130.

The edge part 130 may surround the transition part 120 and a plurality of support parts 170 may be connected. The edge portion 130 may be formed in a circular shape as shown in FIG. 2. However, the shape of the edge portion 130 is not limited thereto, and the portion to which the support portion 170 is connected may be formed flat.

The optical fiber unit 160 may be disposed around the outer portion of the central optical unit 110. The optical fiber unit 160 may be disposed such that at least a portion thereof is included in the central optical unit 110. The optical fiber unit 160 may be formed to extend in the first direction. In addition, the cross section of the optical fiber unit 160 may be polygonal or circular. For example, the optical fiber unit 160 may be formed in a substantially polygonal pillar shape or a substantially circular pillar shape.

The optical fiber unit 160 may be disposed in plural along the central optical unit 110 to form an annular shape. In addition, the optical fiber unit 160 may be disposed in plural in the radial direction of the central optical unit 110. The optical fiber unit 160 may be partially overlapped and disposed continuously. In addition, the optical fiber parts 160 may be disposed to have a predetermined distance from each other. However, hereinafter, it will be described mainly for the case where the three fibers are arranged regularly with a predetermined interval for convenience of description.

In detail, the optical fiber part 160 is adjacent to the central optical part 110 and disposed in a circular direction along the central optical part 110 and in the radial direction of the first fiber part 161. The 2nd fiber part 162 arrange | positioned at the outer side and the 3rd fiber part 163 arrange | positioned at the outer side in the radial direction of the 2nd fiber part 162 may be provided.

The first fiber portion 161, the second fiber portion 162, and the third fiber portion 163 may be formed to extend from the front surface 150a to the rear surface 150b, respectively.

The optical fiber unit 160 may form a predetermined angle with each of the longitudinal direction and the first direction. The optical fiber unit 160 may form a predetermined angle with the center line CL of the central optical unit 110. In addition, the angle may increase in the radial direction of the central optical unit 110. The optical fiber unit 160 is disposed to have a predetermined angle, and when light having a large incident angle is incident, the light may be reflected by the sidewall of the optical fiber unit 160. In this case, the optical fiber unit 160 may have an inclined bar, thereby widening an incident area, and thus may effectively align light.

In detail, the longitudinal direction of the first fiber part 161 and the center line CL of the central optical part 110 form a first angle α, and the longitudinal direction and the central optical part of the second fiber part 162. The center line CL of 110 forms a second angle β, and the longitudinal direction of the third fiber portion 163 and the center line of the central optical portion 110 form a third angle γ. Can be. The third angle is greater than the second angle and greater than the first angle. Also, the third angle is larger than the second angle. Therefore, the optical fiber unit 160 may be disposed such that the arrangement angle becomes smaller in the radial direction from the center line CL.

4 is a cross-sectional view illustrating a modified example of the adjustable intraocular lens 100 of FIG. 1.

Referring to FIG. 4, the optical fiber part 160 ′ may have a center in the longitudinal direction in one region P. As shown in FIG. The extension lines in the longitudinal direction of the first fiber portion 161 ′, the second fiber portion 162 ′, and the third fiber portion 163 ′ may be arranged to gather in one region P, the optical fiber portion 160 ′. ) Can secure the field of view by converging the external light to one area.

Again, referring to FIG. 3, the distance b of the region where the optical fiber part 160 is disposed may be smaller than the diameter a of the central optical part 110. Most of the light incident from the outside passes through the central optical unit 110, and only a portion of the light having a large incident angle is reflected by the optical fiber unit 160 to align the light. Hereinafter, the incident angle is an angle between the first direction and the moving direction of the light. Detailed description thereof will be described later.

The refractive index of the optical fiber unit 160 may be formed to be different from the refractive index of the central optical unit 110. For example, the refractive index of the optical fiber unit 160 may be greater than the refractive index of the central optical unit 110, or the refractive index of the optical fiber unit 160 may be smaller than the refractive index of the central optical unit 110. Thus, light incident on the optical fiber unit 160 may be selectively transmitted according to the incident angle. For example, the optical fiber unit 160 may be selected from any of materials of optical fiber or glass fiber.

The support unit 170 may extend in a radial direction from the edge portion 130 of the lens body 150. The support unit 170 may be provided in plurality, and typically, the support unit 170 is used as a haptic.

The support unit 170 may prevent the lens body 150 from moving or rotating within the eyeball. That is, the support unit 170 is supported on the inner surface of the eye, such as intracapsular or sulcus, so that the lens body 150 may be disposed on the optical path of the eye. The support 170 may have various shapes and sizes depending on the position where the adjustable intraocular lens 100 is implanted. For example, the support 170 can be C-shaped, J-shaped, U-shaped, flat design or other design. However, the following description will be given with reference to a case where two support portions 170 are formed to extend from the edge portion 130 for convenience of description. FIGS. 5A to 5F illustrate the adjustable intraocular lens 100 of FIG. 1. It is sectional drawing which shows the modification of. Modifications of the adjustable intraocular lens 100 are characteristically different in structure and arrangement of the optical fiber portion, which will be described below.

Referring to FIG. 5A, the optical fiber unit 160a may be inserted to connect the rear surface 150b from the front surface 150a. The first fiber portion 161a and the second fiber portion 162a may extend in the first direction from the front surface 150a toward the rear surface 150b.

The optical fiber unit 160a may selectively pass external light incident to the transition unit 120 of the front surface 150a. The optical fiber part 160a may reflect and pass a part of the incident light according to the refractive index of the optical fiber part 160a. In addition, when the incident angle of the external light is greater than or equal to the critical angle of the optical fiber unit 160a, the optical fiber unit 160a may reflect all incident light. In addition, when the incident angle of the external light falls within a predetermined range, it may pass through all of the incident light. The optical fiber unit 160a may pass through only a part of the external light incident to the adjustable intraocular lens 100 to generate a clear image on the retina. The optical fiber portion 160a forms an effect similar to the pinhole effect, but the total amount of light passing through and the total area through which light passes can be greatly increased as compared to the pinhole effect, which is brighter in the retina. Allows sharp images to be created.

Referring to FIG. 5B, the optical fiber unit 160b may be formed to be inserted into the front surface 150a. The optical fiber portion 160b has a predetermined length inserted in the first direction from the front surface 150a, and the optical fiber portion 160 does not extend to the rear surface 150b.

For example, the optical fiber part 160b may include a first fiber part 161b and a second fiber part 162b, and each of the optical fiber parts 160b may be inserted into the front surface 150a along a first direction with a predetermined length. have.

The optical fiber unit 160b may selectively pass external light incident to the transition unit 120 of the front surface 150a. The optical fiber part 160b may reflect and pass a part of the incident light according to the refractive index of the optical fiber part 160b. In addition, when the incident angle of the external light is greater than or equal to the critical angle of the optical fiber unit 160b, the optical fiber unit 160b may reflect all the incident light. In addition, when the incident angle of the external light falls within a predetermined range, it may pass through all of the incident light. The optical fiber unit 160b may pass through only a part of the external light incident to the adjustable intraocular lens 100 to clearly generate an image on the retina. The optical fiber unit 160b forms an effect similar to the pinhole effect, but the total amount of light passing through and the total area through which the light passes can be greatly increased compared to the pinhole effect, thereby making the retina brighter and clearer. Allow phases to be created.

Referring to FIG. 5C, the optical fiber unit 160c may be formed to be inserted into the rear surface 150b. The optical fiber unit 160c has a predetermined length inserted in the first direction from the rear surface 150b, and the optical fiber unit 160c does not extend to the front surface 150a.

For example, the optical fiber part 160c may include a first fiber part 161c and a second fiber part 162c, and each of the optical fiber parts 160c may be inserted into the rear surface 150b along a first direction with a predetermined length. have.

The optical fiber unit 160c may selectively pass external light incident to the transition unit 120 of the front surface 150a. The external light is incident on the transition part 120 and moves toward the optical fiber part 160c.

The optical fiber unit 160c may selectively pass external light incident to the transition unit 120 of the front surface 150a. The optical fiber unit 160c may reflect and pass a part of the incident light according to the refractive index of the optical fiber unit 160c. In addition, when the incident angle of the external light is greater than or equal to the critical angle of the optical fiber unit 160c, the optical fiber unit 160c may reflect all incident light. In addition, when the incident angle of the external light falls within a predetermined range, it may pass through all of the incident light. The optical fiber unit 160c may pass through only a part of the external light incident to the adjustable intraocular lens 100 to clearly generate an image on the retina. The optical fiber unit 160c forms an effect similar to the pinhole effect, but the total amount of light passing through and the total area through which light passes can be greatly increased compared to the pinhole effect, thereby making the retina brighter and clearer. Allow phases to be created.

Referring to FIG. 5D, the optical fiber unit 160d may be disposed inside the lens body 150. The optical fiber unit 160d may be disposed adjacent to the front surface of the lens body 150.

For example, the optical fiber part 160d may include a first fiber part 161d and a second fiber part 162d, and may be disposed inside the transition part 120 along the first direction, respectively. . In this case, the first fiber portion 161d and the second fiber portion 162d may be disposed closer to the front surface than the rear surface 150b.

The optical fiber unit 160d may selectively pass external light incident to the transition unit 120 of the front surface 150a. The optical fiber unit 160d may reflect and pass a part of the incident light according to the refractive index of the optical fiber unit 160d. In addition, when the incident angle of the external light is greater than or equal to the critical angle of the optical fiber unit 160d, the optical fiber unit 160d may reflect all the incident light. In addition, when the incident angle of the external light falls within a predetermined range, it may pass through all of the incident light.

The optical fiber unit 160d may pass a portion of the external light incident to the adjustable intraocular lens 100 so that an image may be clearly generated on the retina. The optical fiber unit 160d forms an effect similar to the pinhole effect, but the total amount of light passing through and the total area through which light passes can be greatly increased compared to the pinhole effect, thereby making the retina brighter and clearer. Allow phases to be created.

Referring to FIG. 5E, the optical fiber unit 160e may be disposed in the lens body 150. The optical fiber unit 160e may be disposed adjacent to the rear surface of the lens body 150.

For example, the optical fiber part 160e may include a first fiber part 161e and a second fiber part 162e, and may be disposed inside the transition part 120 along the first direction, respectively. . In this case, the first fiber portion 161e and the second fiber portion 162e may be disposed closer to the rear surface 150b than to the front surface 150a.

The optical fiber unit 160e may selectively pass external light incident to the transition unit 120 of the front surface 150a. The optical fiber part 160e may reflect and pass a part of the incident light according to the refractive index of the optical fiber part 160e. In addition, when the incident angle of the external light is greater than or equal to the critical angle of the optical fiber unit 160e, the optical fiber unit 160e may reflect all incident light. In addition, when the incident angle of the external light falls within a predetermined range, it may pass through all of the incident light. The optical fiber unit 160e may pass through only a part of the external light incident to the adjustable intraocular lens 100 to clearly generate an image on the retina. The optical fiber portion 160e has an effect similar to the pinhole effect, but the total amount of light passing through and the total area through which light passes can be greatly increased compared to the pinhole effect, thereby making the retina brighter and clearer. Allow phases to be created.

Referring to FIG. 5F, the optical fiber unit 160f may be disposed inside the lens body 150. The optical fiber unit 160f may be disposed at the center of the thickness of the lens body 150.

For example, the optical fiber part 160f may include a first fiber part 161f and a second fiber part 162f, and may be disposed inside the transition part 120 along the first direction. . In this case, the first fiber portion 161e and the second fiber portion 162e may be disposed between the front surface 150a and the rear surface 150b.

6 is a perspective view illustrating the adjustable intraocular lens 200 according to another embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along the line VIII-VIII of FIG. 6.

6 and 7, the adjustable intraocular lens 200 may include a lens body 250, a support 270, and an optical fiber unit 260. The lens body 250 may include a central optical unit 210, a transition unit 220, and an edge unit 230. However, another embodiment of the present invention is different in that the other parts are the same as the original embodiment, and the shape and arrangement of the optical fiber portion 260 is characterized in that differently formed. Therefore, in the description of the present embodiment, the part without description thereof will be used the description of the embodiment described above, and detailed description thereof will be omitted.

The optical fiber part 260 may be disposed in plural in the radial direction of the central optical part 210, and the diameter of the optical fiber part 260 may be formed to decrease in the radial direction. However, hereinafter, a description will be given mainly for the case of forming three fiber parts for convenience of description.

In detail, the optical fiber part 260 is adjacent to the central optical part 210 and is disposed in a circular direction along the central optical part 210 in the radial direction of the first fiber part 261 and the first fiber part 261. It may have a second fiber portion 262 disposed outside. In addition, the second fiber portion 262 may be provided with a third fiber portion 263 disposed on the outer side in the radial direction. The diameter of the first fiber portion 261 disposed closest to the central optical portion 210 is the largest, and the diameter of the third fiber portion 263 disposed at the outermost portion of the central optical portion 210 is the smallest. Can be.

The optical fiber unit 260 may form a predetermined angle with each of the longitudinal direction and the first direction. The optical fiber unit 260 may form a predetermined angle with the center line CL of the central optical unit 210. In addition, the angle may increase in the radial direction of the central optical unit 210. External light incident on the central optical unit 210 may pass through the central optical unit to form an image on the retina. In addition, the light passing through the central optical unit 210 may brighten the formed image.

The optical fiber portion may be arranged in plural in the radial direction of the central optical portion, and the diameter of the optical fiber portion may be formed to decrease in the radial direction. When the diameter of the first fiber portion 261 is designed to be large, a larger amount of aligned light toward the macula, which is a structure in the retina forming the center of the visual axis, can be ensured. By arranging as much light as the focus depth is improved, the adjustable intraocular lens 200 with improved brightness may be provided. In addition, if the diameter of the third fiber portion 263 is reduced, the density of the optical fibers included in the same area is increased, and the light is incident at a large angle of incidence toward the outside of the adjustable guide lens 200, thereby improving the depth of focus. Can block the obstructing light effectively.

In another embodiment, when the diameter of the first fiber part 261 is made small, the area of the first fiber part 261 in the transition part 220 is reduced. Therefore, the light incident on the transition part 220 relatively increases. Since the first fiber portion 261 is disposed adjacent to the central optical portion 210, the first fiber portion 261 increases the transmission amount of light incident to the region near the central optical portion 210 and transmits the light incident to the region far from the central optical portion 210. Can be lowered. Therefore, it is possible to provide the adjustable intraocular lens 200 with improved brightness.

8A to 8G are cross-sectional views illustrating a modified example of the adjustable intraocular lens 200 of FIG. 6. Modifications of the adjustable intraocular lens 200 are characteristically different in the structure and arrangement of the optical fiber portion, which will be described below.

Referring to FIG. 8A, the optical fiber unit 260a may be inserted to connect the rear surface 250b at the front surface 250a. For example, the optical fiber part 260a may include a first fiber part 261a, a second fiber part 262a, and a third fiber part 263a, each of which has a front surface 250a along the first direction. May extend to the rear surface 250b. The diameter of the first fiber portion 261a disposed closest to the central optical portion 210 is the largest, and the diameter of the third fiber portion 263c disposed outermost to the central optical portion 210 is formed the smallest. Can be.

Referring to FIG. 8B, the optical fiber part 260b may be formed to be inserted into the front surface 250a. The optical fiber portion 260b has a predetermined length inserted in the first direction from the front surface 250a, and the optical fiber portion 260b does not extend to the rear surface 250b.

For example, the optical fiber part 260b may include a first fiber part 261b, a second fiber part 262b, and a third fiber part 263b, and each of the front surface 250a along the first direction. Can be inserted into a predetermined length. The diameter of the first fiber portion 261b disposed closest to the central optical portion 210 is largest, and the diameter of the third fiber portion 263b disposed outermost to the central optical portion 210 is formed the smallest. Can be.

Referring to FIG. 8C, the optical fiber part 260c may be formed to be inserted into the rear surface 250b. The optical fiber portion 260c has a predetermined length inserted in the first direction from the rear surface 250b, and the optical fiber portion 260c does not extend to the front surface 250a.

For example, the optical fiber part 260c may include a first fiber part 261c, a second fiber part 262c, and a third fiber part 263c, and each of the rear surface 250b along the first direction. Can be inserted into a predetermined length. The diameter of the first fiber portion 261c disposed closest to the central optical portion 210 is largest, and the diameter of the third fiber portion 263c disposed outermost to the central optical portion 210 is formed the smallest. Can be.

Referring to FIG. 8D, the optical fiber unit 260d may be disposed inside the lens body 250. The optical fiber part 260d may be disposed adjacent to the front surface of the lens body 250.

For example, the optical fiber part 260d may include a first fiber part 261d, a second fiber part 262d, and a third fiber part 263d, and each of the transition parts 220 along the first direction. It may be disposed inside. In this case, the first fiber portion 261d, the second fiber portion 262d, and the third fiber portion 263d may be disposed closer to the front surface than the rear surface 250b.

In addition, the diameter of the first fiber portion 261d disposed closest to the central optical portion 210 is the largest, and the diameter of the third fiber portion 263d disposed at the outermost portion of the central optical portion 210 is the largest. It can be formed small.

Referring to FIG. 8E, the optical fiber unit 260e may be disposed in the lens body 250. The optical fiber unit 260e may be disposed adjacent to the rear surface of the lens body 250.

For example, the optical fiber part 260e may include a first fiber part 261e, a second fiber part 262e, and a third fiber part 263e, and each of the transition parts 220 along the first direction. It may be disposed inside. In this case, the first fiber portion 261e, the second fiber portion 262e, and the third fiber portion 263e may be disposed closer to the rear surface 250b than to the front surface 250a.

In addition, the diameter of the first fiber portion 261e disposed closest to the central optical portion 210 is the largest, and the diameter of the third fiber portion 263de disposed at the outermost portion of the central optical portion 210 is the largest. Can be formed small

Referring to FIG. 8F, the optical fiber unit 260f may be disposed in the lens body 250. The optical fiber part 260f may be disposed at the center of the thickness of the lens body 250.

For example, the optical fiber part 260f may include a first fiber part 261f, a second fiber part 262f, and a third fiber part 263f, and each of the transition parts 120 along the first direction. It may be disposed inside. In this case, the first fiber portion 261f and the second fiber portion 162f may be disposed between the front surface 250a and the rear surface 250b.

8G is a cross-sectional view illustrating another modified example of the adjustable intraocular lens 200 of FIG. 6. The modified example of the adjustable intraocular lens 200 is characteristically different in structure and arrangement of the optical fiber part, which will be described below.

The optical fiber part 260g may be formed such that the outer wall 261g is tapered. The optical fiber part 260g may include an outer wall 261g tapered in the first direction. In detail, the optical fiber portion 260g has a large cross section formed on the front surface 250a, and the cross section may be reduced toward the rear surface 250b. Some of the light incident on the optical fiber portion 260g may hit the tapered outer wall 261g. That is, some of the light passing through the optical fiber portion 260g may hit the outer wall 261g again to reduce the amount of light passing through the optical fiber portion 260g. The optical fiber part 260g can align the light by effectively reflecting the incident light even if the volume of the optical fiber part 260g is reduced by the tapered outer wall 261g.

9 is a perspective view of the adjustable intraocular lens 300 according to another embodiment of the present invention.

Referring to FIG. 9, the adjustable intraocular lens 300 may include a lens body 350, a support 370, and an optical fiber unit 360. The lens body 350 may include a central optical unit 310, a transition unit 320, and an edge unit 330. However, another embodiment of the present invention is different in that the other parts are the same as the original embodiment, characterized in that the shape and arrangement of the optical fiber portion 360 is differently formed. Therefore, in the description of the present embodiment, the part without description thereof will be used the description of the embodiment described above, and detailed description thereof will be omitted.

The optical fiber unit 360 may form a plurality of bands. The optical fiber part 360 may be disposed on the transition part 320 and may be disposed to have a predetermined interval in the radial direction. The plurality of bands including the optical fiber part 360 is not limited to a specific number. However, hereinafter, a description will be given mainly for the case of having three bands for convenience of description.

In detail, the optical fiber part 360 includes a first fiber band 361 disposed outside the central optical part 310, a second fiber band 362 disposed outside the first fiber band 361, and The third fiber band 363 may be provided outside the second fiber band 362. The first fiber band 361 and the second fiber band 362 may have a predetermined interval, and the second fiber band 362 and the third fiber band 363 may be disposed to have a predetermined interval. Each of the fiber bands may be formed to have a predetermined angle with the center line CL of the lens body 350 or may be disposed to be in contact with one surface thereof. In addition, it may be disposed adjacent to one surface of the lens body 350 to form a gap, or may be disposed in the center of the lens body 350. The description thereof will use the description of the original embodiment described above.

The adjustable intraocular lens 300 may increase the amount of light incident at intervals between the fiber bands, thereby securing a field of view. That is, the field of view may be widened due to light incident from the outside passing through the gaps between the fiber bands.

FIG. 10A is a cross-sectional view of the human eye 10 showing the natural lens 17, and FIG. 10B is a cross-sectional view of the human eye 10 into which the adjustable intraocular lens 100 of FIG. 1 is inserted.

Referring to FIG. 10A, a cross-sectional view of a human eye 10 having an anterior chamber 12 and an posterior chamber 14 separated by an iris 30 is shown. Within the posterior chamber 14 is a capsular bag 16 which holds the natural lens 17 of the eye. Light entering the eye passes through the cornea 18 to the lens 17, and the cornea 18 and the lens 17 direct light to the image of the retina 20 located behind the eye and adjust focus. Play a role together. The retina 20 is connected to the optic nerve 22, which transmits the image received by the retina 20 to the brain for interpretation.

In the eye 10 where the natural lens 17 is damaged (eg, blurred by cataracts), the natural lens 17 can no longer properly focus or direct incident light to the retina, and the image is blurred. Well known surgical techniques for treating this situation include removing the damaged lens and replacing it with an artificial lens such as an intraocular lens.

Referring to FIG. 10B, the surgeon may ablate some or all of the natural lens 17 and then implant the adjustable intraocular lens 100. At this time, the central optical unit 110 may be aligned to be located in the macular. The support unit 170 may be fixed at an appropriate position in the capsular bag so that the lens body 150 does not move.

FIG. 11 is a conceptual diagram illustrating that external light is incident on the adjustable intraocular lens 100 of FIG. 1.

Referring to FIG. 9, it can be explained that the adjustable intraocular lens 100 is implanted in the eye so that an image is clearly generated in the retina.

In the conventional multifocal intraocular lens, when looking at an object at an intermediate distance or a short distance, out of focus light such as a flash or halos is generated to cause visual impairment. This is related to the property of light going straight. Most of the light incident at a long distance is perpendicular to the retina 20, but the light incident at a close distance is formed at various angles of incidence so that only a part of the light is incident vertically on the retina 20. In other words, when viewing an object at an intermediate distance or near distance, a plurality of images are formed in the retina due to light having different incidence angles, thereby causing visual impairment.

The adjustable intraocular lens 100 may form a clear image on the retina by aligning the light incident at a short or intermediate distance.

D1 represents light incident from a long distance, and D2 and D3 represent light incident from a short or medium distance. D2 indicates passing through the optical fiber unit 160, and D3 indicates that the incident angle is large and is reflected on the sidewall of the optical fiber unit 160.

Light incident from a distance such as D1 enters and passes perpendicular to the cornea 18, the central optical unit 110, or the optical fiber unit 160. In other words, the light coming in from far may pass through the adjustable intraocular lens 100.

When light having a small angle of incidence is incident at near or intermediate distances such as D2, that is, when the light is incident almost perpendicularly to the adjustable intraocular lens, the light may pass through the optical fiber unit 160. The light having a small incident angle passes through both the central optical unit 110 and the optical fiber unit 160 to improve the depth of focus.

On the contrary, when light having a large incident angle is incident at a short distance or a medium distance, such as D3, the light may be reflected to the optical fiber unit 160. That is, when the angle of incidence of the adjustable intraocular lens 100 is large, the light passing through the central optical unit 110 passes, but the light directed toward the optical fiber unit 160 has a refractive index different from that of the central optical unit 110. Reflect.

In particular, light may be reflected at the side of the optical fiber portion 160. Since the refractive index of the optical fiber part 160 is different from the transition part 120, light having a large incident angle passes through the transition part 120 and is reflected by the difference in refractive index on the side of the optical fiber part 160.

In addition, a light absorbing paint or the like can be applied to the side surface of the optical fiber unit 160. Light having a large incident angle may pass through the transition part 120 or may be absorbed through the paint on the side of the optical fiber part 160.

The adjustable intraocular lens 100 selectively passes only a portion of the incident light, thereby aligning the light in the optical fiber unit 160 to improve the depth of focus. That is, the optical fiber unit 160 may form an effect similar to the pinhole effect, so that an image may be clearly formed on the retina.

The adjustable intraocular lens 100 transmits light incident on the central optical unit 110, but selectively transmits light incident on the optical fiber unit 160 to clearly form an image.

The adjustable guide lens 100 may improve the depth of focus by the optical fiber unit 160 to align the light, to minimize the mutual interference of the light.

The adjustable

intraocular lenses

200 and 300 may adjust the amount of light passing through the

central optics

210 and 310 to adjust the brightness of the image formed on the retina.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will include such modifications and variations as long as they fall within the spirit of the invention.

According to one embodiment of the present invention, an attempt to focus can be improved by providing an adjustable intraocular lens, and embodiments of the present invention can be applied to lenses, glasses, glasses, etc. to which the adjustable intraocular lens used in industry is applied. .

Claims

A lens body having a front and a back and having a central optical part formed convexly in a first direction;

A plurality of supports extending radially from an edge of the lens body; And

And an optical fiber unit disposed to include at least a portion of the central optical unit, and arranged around the central optical unit outside the central optical unit.
According to claim 1,

The refractive index of the optical fiber portion is different from the refractive index of the central optical portion.
According to claim 1,

The optical fiber unit

And the longitudinal direction of the optical fiber portion and the first direction are arranged to form a predetermined angle.
According to claim 1,

The lens body,

A transition part surrounding the central optical part and in which the optical fiber part is disposed; And

And an edge portion surrounding the transition portion and to which the plurality of support portions are connected.
The method of claim 4, wherein

The transition unit,

And the thickness in the first direction becomes thinner from the central optical portion toward the edge portion.
The method of claim 1,

The optical fiber unit,

A first fiber portion disposed adjacent to the central optical portion; And

And a second fiber portion disposed radially adjacent to the first fiber portion.
The method of claim 6,

The length of the first fiber portion and the size of the angle formed by the first direction is smaller than the size of the length formed by the length direction and the first direction of the second fiber portion, the adjustable intraocular lens.
The method of claim 1,

The optical fiber unit,

And a plurality of radially arranged central portions of the central optical portion, wherein the diameter of the optical fiber portion decreases in the radial direction.
According to claim 1,

The optical fiber unit,

An adjustable intraocular lens extending from said front side of said lens body to said rear side.
According to claim 1,

The optical fiber unit,

The adjustable intraocular lens inserted into the front or the rear of the lens body.
The method of claim 1,

The optical fiber unit,

The adjustable intraocular lens is disposed inside the lens body.
The method of claim 11, wherein

The optical fiber unit,

An adjustable intraocular lens disposed closer to the front surface than the rear surface of the lens body or adjacent to the rear surface than the front surface of the body.
According to claim 1,

The optical fiber unit,

And the outer wall is tapered in the first direction.
According to claim 1,

The optical fiber unit,

The adjustable intraocular lens selected from the materials of either glass fibers or optical fibers.
According to claim 1,

At least a portion of the external light incident on the optical fiber portion is totally reflected at the inner wall of the optical fiber portion, the adjustable intraocular lens.
According to claim 1,

External light directed toward the central optical portion passes through the central optical portion, and the external light directed to the optical fiber portion selectively passes according to an angle of incidence.
According to claim 1,

The adjustable intraocular lens is coated with a light absorption paint on the outer wall of the optical fiber portion.