JPH10211A - Intraocular lens - Google Patents
Intraocular lensInfo
- Publication number
- JPH10211A JPH10211A JP15650696A JP15650696A JPH10211A JP H10211 A JPH10211 A JP H10211A JP 15650696 A JP15650696 A JP 15650696A JP 15650696 A JP15650696 A JP 15650696A JP H10211 A JPH10211 A JP H10211A
- Authority
- JP
- Japan
- Prior art keywords
- loop
- intraocular lens
- optical unit
- capsule
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する分野】本発明は、水晶体嚢内の核を除去
した後、水晶体嚢に装着する眼内レンズに係り、眼内レ
ンズ装着後の後発白内障の発症を抑制できる眼内レンズ
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an intraocular lens to be attached to a capsular bag after removing a nucleus in the capsular bag, and to an intraocular lens capable of suppressing the onset of secondary cataract after the intraocular lens is attached. .
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】白内障
は、図１に示す眼の水晶体(１)に曇りが生じ、光や像が
水晶体(１)を通過して網膜(２)に到達することを妨げる
眼病である。眼内レンズは、曇りが生じた水晶体の代用
として開発された。2. Description of the Related Art Cataracts cause clouding of the crystalline lens (1) of the eye shown in FIG. 1, and light and images pass through the crystalline lens (1) and reach the retina (2). It is an eye disease that prevents things from happening. Intraocular lenses were developed as a replacement for fogged crystalline lenses.
【０００３】図４〜図６に示す如く、眼内レンズ(３)は
円形凸レンズ状の光学部(31)と、該光学部の外周に突設
された弾性体ループ(32)とからなる。図４の眼内レンズ
(３)の弾性体ループ(32)は、光学部(31)の外周の一箇所
から突出して途中で光学部(31)の外周に沿う様に左右に
分岐したオープンサーキュラーループである。図５の眼
内レンズの弾性体ループ(32)は、光学部の直径線上の両
端から、一対の略半円状のループ片(32a)(32a)を互いに
光学部の外周に沿う様に点対称に延ばして形成されてい
る。図６の眼内レンズの弾性体ループ(32)は、無端状リ
ング体に形成され、光学部(31)と同心に配置して、ステ
ー(33)(33)によって光学部(31)と一体に繋がっている。As shown in FIGS. 4 to 6, the intraocular lens (3) comprises an optical part (31) in the shape of a circular convex lens and an elastic loop (32) protruding from the outer periphery of the optical part. Intraocular lens of FIG.
The elastic loop (32) of (3) is an open circular loop that protrudes from one location on the outer periphery of the optical unit (31) and branches right and left along the outer periphery of the optical unit (31) on the way. The elastic body loop (32) of the intraocular lens shown in FIG. 5 is formed by connecting a pair of substantially semicircular loop pieces (32a) and (32a) from both ends on the diameter line of the optical unit so as to extend along the outer periphery of the optical unit. It is formed to extend symmetrically. The elastic body loop (32) of the intraocular lens of FIG. 6 is formed in an endless ring body, is arranged concentrically with the optical part (31), and is integrated with the optical part (31) by stays (33) and (33). Is connected to.
【０００４】眼内レンズ(３)の装着は、先ず水晶体(１)
のカプセルである嚢(11)に対し、角膜(４)側である前部
中央を切開して、図２に示す嚢内部の水晶体核(12)及び
皮質線維細胞(13)を摘出し、眼内レンズ用鉗子によって
眼内レンズ(３)の弾性体ループ(32)を光学部(31)側に引
き寄せながら、空の水晶体嚢内に挿入する。嚢内でルー
プ(32)の引き寄せを解除して、ループの弾性復帰力によ
り、水晶体嚢の最大径である赤道部(14)を突っ張らせ
て、光学部(31)を水晶体嚢(11)の中央部に位置決め保持
するのである。Attachment of the intraocular lens (3) is performed by first putting the lens (1)
The capsule (11), which is a capsule, is incised at the anterior center on the side of the cornea (4), and the lens nucleus (12) and cortical fiber cells (13) inside the capsule shown in FIG. The elastic lens loop (32) of the intraocular lens (3) is pulled into the empty lens capsule while being pulled toward the optical unit (31) by the inner lens forceps. The retracting of the loop (32) in the capsule is released, and the elastic return force of the loop causes the equatorial part (14), which is the maximum diameter of the lens capsule, to be stretched, and the optical part (31) is moved to the center of the lens capsule (11). The part is positioned and held.
【０００５】水晶体(１)の嚢外摘出術を行なっても、図
２に示す赤道部(14)より前側の前嚢(11a)の内面に存在
する上皮細胞(15)は摘出しきれずに常に残ってしまう。
上記上皮細胞(15)は、水晶体嚢(11)の赤道部(14)近傍で
特に発育が活発である。後発白内障は、嚢外摘出した後
に、前嚢(11a)の内側に残った上皮細胞(15)が、赤道部
(14)近傍で活発に発育して赤道部(14)より後嚢(11b)側
に延び（以下、これを専門的に「遊走」と呼ぶ）、図３
に示す如く、後嚢（11b）上で細胞が群集し、この群集
した細胞（15a）が曇って光や像が網膜に到達するのを
妨げる眼病である。[0005] Even if extracapsular extraction of the lens (1) is performed, epithelial cells (15) existing on the inner surface of the anterior capsule (11a) in front of the equator (14) shown in FIG. Will remain.
The epithelial cells (15) are particularly active in the vicinity of the equator (14) of the lens capsule (11). In secondary cataract, epithelial cells (15) remaining inside the anterior capsule (11a) after extracapsular extraction are
(14) Actively grows in the vicinity and extends toward the posterior capsule (11b) from the equator (14) (hereinafter referred to as "migration").
As shown in the figure, the cells cluster on the posterior capsule (11b), and the clustered cells (15a) become cloudy and prevent light and images from reaching the retina.
【０００６】多数の臨床例から、水晶体嚢内の摘出後、
眼内レンズ(３)を装着した場合と、しない場合では、装
着した方が後発白内障の発症は少ないことが知られてい
る。これは、眼内レンズに上皮細胞(15)の遊走を妨げる
何らかの作用があると考えられる。出願人は、次のａ〜
ｃの３つの臨床事実に着目し、眼内レンズの形状に工夫
を施すことにより、後発白内障の発症を更に抑制できる
のではないかと着想した。[0006] From a number of clinical cases, after excision in the lens capsule,
It is known that when the intraocular lens (3) is worn and when it is not worn, the onset of secondary cataract is less likely to occur when the eye is worn. This is presumably because the intraocular lens has some effect of preventing the migration of epithelial cells (15). The applicant has the following a-
Focusing on the three clinical facts of c, the inventors conceived that by devising the shape of the intraocular lens, it would be possible to further suppress the development of secondary cataract.
【０００７】ａ．細胞の培養において、図１１に示す様
に、底壁(61)と周壁(62)の交差部が角ばった培養器(６)
と、図１２に示す様に、底壁(71)と周壁(72)が丸く連続
した培養器(７)を用いて培養を行なった場合を比べる
と、図１１の培養器では、細胞（15b）は底壁(61)の外
周迄は遊走するが、周壁(62)を登って遊走することはな
い。図１２の培養器(７)では、底壁(71)から周壁(72)を
登って細胞は活発に遊走する。培養器の形状の違いによ
る上記現象の理由は解明されていないが、細胞が遊走す
るには、隣合う細胞どうしの結合が不可欠であり、図１
１の培養器(６)の様に底壁(61)と周壁(62)とが角張って
いると、この角張り部で細胞の結合が弱められのではな
いかと推論される。A. In the cell culture, as shown in FIG. 11, the intersection of the bottom wall (61) and the peripheral wall (62) has a square incubator (6).
In comparison with the case where the culture is performed using the incubator (7) in which the bottom wall (71) and the peripheral wall (72) are round and continuous as shown in FIG. 12, the incubator of FIG. ) Travels to the outer periphery of the bottom wall (61), but does not climb up the peripheral wall (62). In the incubator (7) of FIG. 12, cells actively migrate from the bottom wall (71) to the peripheral wall (72). Although the reason for the above-mentioned phenomenon due to the difference in the shape of the incubator has not been elucidated, it is essential for the cells to migrate that the connection between adjacent cells is indispensable.
If the bottom wall (61) and the peripheral wall (62) are angular as in the incubator (6), it is inferred that the binding of the cells may be weakened at this angular portion.
【０００８】ｂ．正常な水晶体(１)では、上皮細胞(15)
が後嚢(11b)側に遊走することはないのは、水晶体嚢内
に充満する水晶体皮質線維細胞(13)が上皮細胞(15)を包
囲しており、この包囲が上皮細胞(15)の遊走を抑制して
いると仮定し、兎の眼で、嚢外摘出後、水晶体嚢にシリ
コンを充填して経過を観察した。上皮細胞(15)はシリコ
ンに包囲されているにも拘らず後嚢側に遊走した。B. In normal lens (1), epithelial cells (15)
Does not migrate to the posterior capsule (11b), because the lens cortical fiber cells (13) filling the lens capsule surround the epithelial cells (15), and this surrounding is the migration of the epithelial cells (15). Assuming that this was suppressed, the extracapsular extraction was performed with the eyes of rabbits, and the lens capsule was filled with silicone and the progress was observed. Epithelial cells (15) migrated to the posterior capsule, despite being surrounded by silicon.
【０００９】ｃ．出願人は、水晶体嚢内に眼内レンズを
装着した状況の患者において、水晶体嚢ごと水晶体後方
の硝子体(５)内に落ち込む(専門的には、「脱臼」と呼
ぶ)極めて稀な症例の摘出手技を経験した。そして、こ
の水晶体嚢の病理組織所見を報告した(臨床眼科 第４
９巻第８号 別冊１９９５年８月１５日発行)。C. The Applicant has found that in a patient with an intraocular lens mounted in the capsular bag, the extremely rare case of dropping the entire capsular bag into the vitreous body (5) behind the lens (specialized as "dislocation") Experienced the procedure. The pathological findings of this lens capsule were reported (Clinical Ophthalmology No. 4
Vol. 9, No. 8, Separate Volume Issued August 15, 1995).
【００１０】眼内レンズ(３)の光学部(31)は、図１３に
示す如く、前面が凸で後面が平の平凸レンズ、ループ(3
2)は図４に示すオープンサーキュラーループ、ループの
断面形状は図１３に示す如く円形である。病理組織像で
は、図１３に示す如く、水晶体嚢(11)は、平凸光学部(3
1)のエッジ(31a)に沿う様に屈曲し、上皮細胞(15)の遊
走は、ループ(32)では抑制されず、平凸光学部(31)のエ
ッジ部(31a)との対応位置で阻止されていた。As shown in FIG. 13, an optical portion (31) of the intraocular lens (3) is a plano-convex lens having a convex front surface and a flat rear surface, and a loop (3).
2) is an open circular loop shown in FIG. 4, and the cross-sectional shape of the loop is circular as shown in FIG. In the histopathological image, as shown in FIG. 13, the lens capsule (11) is
It bends along the edge (31a) of (1), and migration of the epithelial cells (15) is not suppressed by the loop (32), but at the position corresponding to the edge (31a) of the plano-convex optical portion (31). Had been blocked.
【００１１】出願人は、ループ(32)の断面形状を工夫す
ることにより、上皮細胞(15)の後嚢(11b)への遊走をル
ープ(32)で阻止できることを案出した。以下ループの断
面形状に特徴のある眼内レンズを明らかにする。The applicant has devised that the migration of the epithelial cell (15) to the posterior capsule (11b) can be prevented by the loop (32) by devising the cross-sectional shape of the loop (32). Hereinafter, an intraocular lens having a characteristic cross-sectional shape of a loop will be described.
【００１２】[0012]
【課題を解決する手段】本発明の眼内レンズは、光学部
と該光学部の外周に突設され眼の水晶体嚢を突っ張って
光学部を位置決めするループとからなり、ループの断面
形状は、角のある不連続な輪郭形状であることを特徴と
する。The intraocular lens of the present invention comprises an optical part and a loop protruding from the outer periphery of the optical part and extending the lens capsule of the eye to position the optical part. It is characterized by having a discontinuous contour shape with corners.
【００１３】[0013]
【作用及び効果】嚢外摘出後、空の水晶体嚢に眼内レン
ズを装着すると、レンズのループが水晶体嚢の赤道部内
面を突っ張るため、水晶体嚢はループの角張り部に沿う
様に屈曲する。ループは、赤道部の周方向の大部分に接
しており、水晶体嚢は赤道部において、ほぼ全周に亘っ
て不連続な屈曲部が生じる。前嚢内面に存在する上皮細
胞は、上記水晶体嚢の屈曲部によって後嚢側への遊走が
阻止される。従って、後発白内障の発症を効果的に予防
できる。[Functions and effects] After extracapsular extraction, when an intraocular lens is attached to an empty capsular bag, the lens loop stretches the inner surface of the equator of the capsular bag, so that the capsular bag bends along the corner of the loop. . The loop is in contact with most of the equatorial region in the circumferential direction, and the capsular bag has a discontinuous bend at almost the entire equatorial region. Epithelial cells present on the inner surface of the anterior capsule are prevented from migrating toward the posterior capsule by the bent portion of the lens capsule. Therefore, the onset of secondary cataract can be effectively prevented.
【００１４】[0014]
【実施例】本発明は、図４乃至図６に示す如く、円板状
の光学部(31)と該光学部の外周に突設された弾性体ルー
プ(32)とからなる公知の眼内レンズ(３)の全てに対し
て、実施できる。図４の場合、ループ(32)は、光学部(3
1)の外周の一箇所から突出して途中で光学部(31)の外周
に沿う様に左右に分岐した一対のループ片(32a)(32a)を
有するオープンサーキュラーループであり、ループ片(3
2a)(32a)の先端部に、眼内レンズ用鉗子の先端が嵌まる
孔(32b)が開設されている。眼内レンズ(３)は、ポリメ
チールメタアクリレート(PMMA)にて一体成形されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 4 to 6, the present invention relates to a known intraocular system comprising a disk-shaped optical part (31) and an elastic loop (32) protruding from the outer periphery of the optical part. This can be performed for all of the lenses (3). In the case of FIG. 4, the loop (32) is
1) is an open circular loop having a pair of loop pieces (32a) (32a) protruding from one place of the outer circumference and branching right and left along the outer circumference of the optical unit (31) on the way, and the loop piece (3
2a) At the tip of (32a), a hole (32b) is formed for fitting the tip of the intraocular lens forceps. The intraocular lens (3) is integrally formed of polymethyl methacrylate (PMMA).
【００１５】実施例の光学部(31)は、眼の角膜(４)側が
凸で、硝子体(５)側が平な平凸レンズである。各ループ
片(32a)(32a)は、眼内レンズ用鉗子の両先端をループ片
(32a)(32a)の孔(32b)(32b)に嵌めて、ループ片(32a)(32
a)を光学部(31)の外周に近づく様に変形させた時、両ル
ープ片(32a)(32a)で光学部(31)のほぼ全周を包囲する様
な長さを有している。The optical section (31) of the embodiment is a plano-convex lens in which the cornea (4) side of the eye is convex and the vitreous (5) side is flat. Each of the loop pieces (32a) and (32a) is connected to both ends of the intraocular lens forceps by a loop piece.
(32a) (32a) fit into the holes (32b) (32b), and the loop pieces (32a) (32
When the a) is deformed so as to approach the outer periphery of the optical section (31), the two loop pieces (32a) and (32a) have a length that surrounds almost the entire circumference of the optical section (31). .
【００１６】本発明は、ループ(32)の断面形状は、水晶
体嚢に接する外側面に角のある不連続な輪郭部形状であ
ることを特徴とする。図７の眼内レンズ(３)は、ループ
片(32a)(32a)の断面形状は光学部(31)側である内側面が
丸く膨らんでいるが、上下に角(34)がある。図８の眼内
レンズ(３)は、ループ片(32a)の断面形状は、外側の上
下に角（３４）があり、内側が光学部（３１）の平らな
面に沿う矩形である。図９はの眼内レンズ(３)は、ルー
プ片(32a)の断面形状は、外側の上下に角(34)があり、
光学部(31)側の内面中央部に綾線が向いた三角形であ
る。図１０は、図９とは対称的にループ片(32a)の断面
形状は、外側面の中央部に綾線があり、上下に角(34)を
有する。図１４ は、断面略Ｕ字状のループ片(32a)を示
しており、内外２つの壁部(35)(36)は高さが異なり、外
側の壁部(35)は内側の壁部(36)よりも高く形成されてい
る。２つの壁部(35)(36)の下端は底壁(37)に直角に繋が
っている。ループ片(32a)は溝(38)の開口面を上皮細胞
側に向けてセットされる。The present invention is characterized in that the cross-sectional shape of the loop (32) is a discontinuous contour having a corner on the outer surface in contact with the capsular bag. In the intraocular lens (3) of FIG. 7, the cross-sectional shape of the loop pieces (32a) (32a) is such that the inner surface on the optical part (31) side is rounded and bulged, but has corners (34) at the top and bottom. In the intraocular lens (3) of FIG. 8, the cross-sectional shape of the loop piece (32 a) has a corner (34) at the top and bottom on the outside, and the inside is a rectangle along the flat surface of the optical part (31). In the intraocular lens (3) of FIG. 9, the cross-sectional shape of the loop piece (32a) has upper and lower corners (34) on the outside,
It is a triangle with a twill line facing the center of the inner surface on the optical part (31) side. FIG. 10 is symmetrical to FIG. 9 in that the cross-sectional shape of the loop piece (32a) has a twill line at the center of the outer surface and has upper and lower corners (34). Fig. 14 shows a loop piece (32a) having a substantially U-shaped cross section. The inner and outer two wall portions (35) and (36) have different heights, and the outer wall portion (35) has an inner wall portion (35). It is formed higher than 36). The lower ends of the two walls (35) and (36) are connected to the bottom wall (37) at right angles. The loop piece (32a) is set with the opening surface of the groove (38) facing the epithelial cell side.
【００１７】上記各ループ片（32a）（32a）の断面形状
は、ループ片（32a）（32a）の分岐部から、孔(32b)を
有する扁平部(32c)に達するまでの間Ｌは一様であっ
て、扁平部(32c)は、水晶体嚢(11)を内側から突張る際
に、水晶体嚢(11)に当たる外側面は、弾性体ループ片(3
2a)の外側面と同じ形状であって、ループ片と一様に連
続している。The cross-sectional shape of each of the loop pieces (32a) (32a) is such that L is one from the branch of the loop pieces (32a) (32a) to the flat part (32c) having the hole (32b). When the flat portion (32c) projects the capsular bag (11) from the inside, the outer surface corresponding to the capsular bag (11) has an elastic loop piece (3
It has the same shape as the outer surface of 2a) and is evenly continuous with the loop piece.
【００１８】然して、嚢内除去を施した、空の水晶体嚢
(11)に、眼内レンズ(３)を装着する際の手技は、眼内レ
ンズ用鉗子によって眼内レンズ(３)のループ片(32a)(32
a)を光学部(31)側に引き寄せながら、空の水晶体嚢内に
挿入し、嚢内でループ片(32a)(32a)の引き寄せを解除し
て、ループ片(32a)(32a)の弾性復帰力により、水晶体嚢
の最大径である赤道部(14)を突っ張らせて、光学部(31)
を水晶体嚢(11)の中央部に位置決め保持させる。Thus, an empty capsular bag with intracapsular removal
In (11), the procedure for attaching the intraocular lens (3) is performed by using the intraocular lens forceps with the loop pieces (32a) (32) of the intraocular lens (3).
While pulling a) toward the optical part (31), insert it into the empty capsular bag, release the loop pieces (32a) and (32a) within the capsule, and return the elastic pieces of the loop pieces (32a) and (32a). By stretching the equatorial part (14) which is the maximum diameter of the lens capsule, the optical part (31)
Is positioned and held at the center of the capsular bag (11).
【００１９】空の水晶体嚢(11)は、ループ片(32a)(32a)
の突っ張りにより、眼内レンズ(３)挿入前より一層扁平
となり、図７、図８、図９の各実施例では、ループ片(3
2a)(32a)の外側面の上下の角部に沿って角張る。図１０
の実施例では、水晶体嚢(11)はループ片(32a)の外側面
の上下端、及び中央部の角(34)に沿って角張る。嚢外摘
出によっても除去しきれない上皮細胞(15)が、後嚢(11
b)側に遊走しようとしても、上記ループ片(32a)(32a)の
角部に対応して水晶体嚢(11)自体が赤道部(14)近傍でほ
ぼ全周に亘って角張るため、上皮細胞(15)の後嚢(11b)
側への遊走を抑制できる。従って、上皮細胞(15)の後嚢
(11b)側への遊走に起因する後発白内障の発症を防止で
きる。The empty capsular bag (11) is composed of loop pieces (32a) and (32a).
7, 8, and 9, the loop piece (3) becomes flatter than before the insertion of the intraocular lens (3).
2a) It is squared along the upper and lower corners of the outer surface of (32a). FIG.
In this embodiment, the capsular bag (11) is angular along the upper and lower ends of the outer surface of the loop piece (32a) and the corner (34) at the center. Epithelial cells (15) that cannot be completely removed by extracapsular removal
b) Even when trying to migrate to the side, the capsular bag (11) itself is squared almost all around the equator (14) corresponding to the corners of the loop pieces (32a) (32a), Posterior capsule (11b) of cells (15)
The migration to the side can be suppressed. Thus, the posterior capsule of epithelial cells (15)
The onset of secondary cataract due to migration to the (11b) side can be prevented.
【００２０】図１４の実施例では、万一、上皮細胞が外
側の壁部(35)の内面を遊走しても、該壁部(35)と底壁(3
7)の直角の繋がり部、更には底壁(37)と内側の壁部(36)
との直角の繋がり部によって遊走が阻止される。本発明
の実施に際し、図５に示す様に、光学部(31)の直径線上
の両端から、一対のループ片(32a)(32a)が互いに光学部
(31)の外周に沿う様に回転対称に延びて弾性体ループ(3
2)を構成した眼内レンズ(３)に実施可能である。In the embodiment of FIG. 14, even if epithelial cells migrate on the inner surface of the outer wall (35), the wall (35) and the bottom wall (3)
The right angled connection of 7), and also the bottom wall (37) and the inner wall (36)
The migration is prevented by the right-angled connection with. In carrying out the present invention, as shown in FIG. 5, a pair of loop pieces (32a) and (32a) are connected to the optical part from both ends on the diameter line of the optical part (31).
The elastic loop (3) extends rotationally symmetrically along the outer circumference of (31).
The present invention can be applied to the intraocular lens (3) having the configuration (2).
【００２１】又、本発明は、図６に示す様に、光学部(3
1)の外側に光学部(31)と同心に無端状リング体(32e)に
形成した弾性体ループ(32)を配置し、光学部(31)の直径
線上の両端に突設したステー(33)(33)によって光学部(3
1)とリング体(32e)とを一体に繋いでいる眼内レンズ
(３)にも実施可能である。Further, according to the present invention, as shown in FIG.
An elastic loop (32) formed in an endless ring body (32e) is arranged concentrically with the optical section (31) outside the optical section (1), and stays (33) protruding from both ends on the diameter line of the optical section (31) are provided. ) (33)
Intraocular lens that connects 1) and the ring (32e) together
(3) can be implemented.
【００２２】更に、本発明の実施に際し、弾性体ループ
(32)の突出方向の形状は限定されず、要は、水晶体嚢(1
1)を内側から突っ張る際に水晶体嚢(11)に当たるループ
(32)の断面形状の外側面の上端、下端、中間部の少なく
とも何れかに角(34)があり、この角張りがループの長手
方向に連続していれば、前記の効果を奏することができ
る。更に当該分野の専門家であれば発明の精神及び範囲
から逸脱することなく、発明に変更及び改良を加えるこ
とができるのは勿論であり、その様な変更及び改良は、
添付の請求の範囲に規定された発明の範囲に含まれるも
のと考えられる。Further, in implementing the present invention, the elastic body loop
The shape of the protruding direction of (32) is not limited.
Loop that hits the capsular bag (11) when stretching 1) from the inside
At least one of the upper end, the lower end, and the intermediate portion of the outer surface of the cross-sectional shape of (32) has a corner (34), and the above effect can be obtained if the squareness is continuous in the longitudinal direction of the loop. it can. Further, it is needless to say that a person skilled in the art can make changes and improvements to the invention without departing from the spirit and scope of the invention.
It is considered to be within the scope of the invention as defined in the appended claims.
【図１】眼球の断面図であり、眼球に対する水晶体の位
置関係を示している。FIG. 1 is a cross-sectional view of an eyeball, showing a positional relationship of a crystalline lens with respect to the eyeball.
【図２】正常な水晶体の断面図である。FIG. 2 is a cross-sectional view of a normal lens.
【図３】水晶体嚢の断面図であって、上皮細胞が後嚢へ
遊走し群集した状態を示している。FIG. 3 is a cross-sectional view of the lens capsule, showing a state in which epithelial cells migrate to the posterior capsule and crowd.
【図４】線対称のループを有する眼内レンズの正面図で
ある。FIG. 4 is a front view of an intraocular lens having a line-symmetric loop.
【図５】回転対称のループを有する眼内レンズの正面図
である。FIG. 5 is a front view of an intraocular lens having a rotationally symmetric loop.
【図６】リング状ループを有する眼内レンズの正面図で
ある。FIG. 6 is a front view of an intraocular lens having a ring-shaped loop.
【図７】図４の眼内レンズに本発明を実施したＡ−Ａ線
に沿う断面図であり、ループの断面形状が半円状である
ことを示している。FIG. 7 is a cross-sectional view of the intraocular lens of FIG. 4 along the line AA in which the present invention is implemented, and shows that the cross-sectional shape of the loop is semicircular.
【図８】眼内レンズの第２実施例の断面図である。FIG. 8 is a sectional view of a second embodiment of the intraocular lens.
【図９】眼内レンズの第３実施例の断面図である。FIG. 9 is a sectional view of a third embodiment of the intraocular lens.
【図１０】眼内レンズの第４実施例の断面図である。FIG. 10 is a sectional view of a fourth embodiment of the intraocular lens.
【図１１】底壁と周壁の交差部が角張っている培養器で
上皮細胞を培養したときの断面図である。FIG. 11 is a cross-sectional view when an epithelial cell is cultured in an incubator in which the intersection between the bottom wall and the peripheral wall is angular.
【図１２】底壁と周壁が丸く連続している培養器で上皮
細胞を培養したときの断面図である。FIG. 12 is a cross-sectional view when an epithelial cell is cultured in an incubator having a round bottom wall and a peripheral wall.
【図１３】眼内レンズを装着した水晶体嚢の拡大断面図
であって、光学部のエッジ部で上皮細胞の遊走が阻止さ
れている状態を示している。FIG. 13 is an enlarged cross-sectional view of the capsular bag with an intraocular lens mounted thereon, showing a state in which migration of epithelial cells is prevented at the edge of the optical unit.
【図１４】眼内レンズの第５実施例の断面図である。FIG. 14 is a sectional view of a fifth embodiment of the intraocular lens.
(１) 水晶体 (３) 眼内レンズ (31) 光学部 (32) 弾性体ループ (1) lens (3) intraocular lens (31) optics (32) elastic loop
Claims (8)
の水晶体嚢を内側から突っ張って光学部を水晶体嚢内に
位置決めするループとからなる眼内レンズにおいて、ル
ープの断面形状は、水晶体嚢に接する外側面に角のある
不連続な輪郭形状である眼内レンズ。1. An intraocular lens comprising an optical unit and a loop protruding from the outer periphery of the optical unit and extending the lens capsule of the eye from the inside to position the optical unit in the lens capsule, wherein a cross-sectional shape of the loop is: An intraocular lens that has a discontinuous contoured shape with corners on the outer surface that contacts the capsular bag.
出して、途中で光学部の両側に一対のループ片として分
岐している請求項１に記載の眼内レンズ。2. The intraocular lens according to claim 1, wherein the loop protrudes from one location on the outer periphery of the optical unit, and branches off on both sides of the optical unit as a pair of loop pieces.
ら、互いに光学部の外周に沿う様に一対のループ片を点
対称に延ばしている請求項１に記載の眼内レンズ。3. The intraocular lens according to claim 1, wherein the loop has a pair of loop pieces extending pointwise symmetrically from both ends on the diameter line of the optical unit so as to extend along the outer periphery of the optical unit.
に無端状リング体のループを配置し、ステーによって光
学部とリング体を一体に繋いでいる請求項１に記載の眼
内レンズ。4. The intraocular lens according to claim 1, wherein the loop has an endless ring body loop disposed concentrically with the optical unit outside the optical unit, and the optical unit and the ring unit are integrally connected by a stay. .
らみ、外側の上下に角を有する半円状である請求項１乃
至請求項４の何れかに記載の眼内レンズ。5. The intraocular lens according to claim 1, wherein a cross-sectional shape of the loop is a semicircular shape having a rounded bulge on the optical part side and an outer upper and lower corner.
乃至請求項４の何れかに記載の眼内レンズ。6. The loop according to claim 1, wherein the cross-sectional shape of the loop is rectangular.
An intraocular lens according to claim 4.
側に向け、上下部に角を有する三角形である請求項１乃
至請求項４の何れかに記載の眼内レンズ。7. The intraocular lens according to claim 1, wherein the cross-sectional shape of the loop is a triangle having a twill line directed inward or outward and having corners at upper and lower portions.
ープの外側の壁部(35)は内側の壁部(36)よりも高く形成
され、内、外２つの壁部(35)(36)の下端は底壁(37)に角
ばって繋がっている請求項１乃至請求項４の何れかに記
載の眼内レンズ。8. The loop has a substantially U-shaped cross section, the outer wall (35) of the loop is formed higher than the inner wall (36), and two inner and outer walls (35) are formed. The intraocular lens according to any one of claims 1 to 4, wherein a lower end of the (36) is angularly connected to the bottom wall (37).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15650696A JPH10211A (en) | 1996-06-18 | 1996-06-18 | Intraocular lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15650696A JPH10211A (en) | 1996-06-18 | 1996-06-18 | Intraocular lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10211A true JPH10211A (en) | 1998-01-06 |
Family
ID=15629259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15650696A Pending JPH10211A (en) | 1996-06-18 | 1996-06-18 | Intraocular lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10211A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6063118A (en) * | 1997-07-19 | 2000-05-16 | Nagamoto; Toshiyuki | Capsular adhesion preventing ring |
| US9039760B2 (en) | 2006-12-29 | 2015-05-26 | Abbott Medical Optics Inc. | Pre-stressed haptic for accommodating intraocular lens |
| US9271830B2 (en) | 2002-12-05 | 2016-03-01 | Abbott Medical Optics Inc. | Accommodating intraocular lens and method of manufacture thereof |
| KR20160040807A (en) * | 2014-10-06 | 2016-04-15 | 한국과학기술연구원 | Intraocular lens with fine pattern |
| US9603703B2 (en) | 2009-08-03 | 2017-03-28 | Abbott Medical Optics Inc. | Intraocular lens and methods for providing accommodative vision |
| US9636213B2 (en) | 2005-09-30 | 2017-05-02 | Abbott Medical Optics Inc. | Deformable intraocular lenses and lens systems |
| US9814570B2 (en) | 1999-04-30 | 2017-11-14 | Abbott Medical Optics Inc. | Ophthalmic lens combinations |
| US9949822B2 (en) | 1998-05-29 | 2018-04-24 | Johnson & Johnson Surgical Vision, Inc. | Intraocular lens for inhibiting cell growth and reducing glare |
| US9968441B2 (en) | 2008-03-28 | 2018-05-15 | Johnson & Johnson Surgical Vision, Inc. | Intraocular lens having a haptic that includes a cap |
| US9987125B2 (en) | 2012-05-02 | 2018-06-05 | Johnson & Johnson Surgical Vision, Inc. | Intraocular lens with shape changing capability to provide enhanced accomodation and visual acuity |
| US10052194B2 (en) | 2009-06-26 | 2018-08-21 | Johnson & Johnson Surgical Vision, Inc. | Accommodating intraocular lenses |
| US11707354B2 (en) | 2017-09-11 | 2023-07-25 | Amo Groningen B.V. | Methods and apparatuses to increase intraocular lenses positional stability |
-
1996
- 1996-06-18 JP JP15650696A patent/JPH10211A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6063118A (en) * | 1997-07-19 | 2000-05-16 | Nagamoto; Toshiyuki | Capsular adhesion preventing ring |
| US9949822B2 (en) | 1998-05-29 | 2018-04-24 | Johnson & Johnson Surgical Vision, Inc. | Intraocular lens for inhibiting cell growth and reducing glare |
| US9814570B2 (en) | 1999-04-30 | 2017-11-14 | Abbott Medical Optics Inc. | Ophthalmic lens combinations |
| US9271830B2 (en) | 2002-12-05 | 2016-03-01 | Abbott Medical Optics Inc. | Accommodating intraocular lens and method of manufacture thereof |
| US10206773B2 (en) | 2002-12-05 | 2019-02-19 | Johnson & Johnson Surgical Vision, Inc. | Accommodating intraocular lens and method of manufacture thereof |
| US9636213B2 (en) | 2005-09-30 | 2017-05-02 | Abbott Medical Optics Inc. | Deformable intraocular lenses and lens systems |
| US9039760B2 (en) | 2006-12-29 | 2015-05-26 | Abbott Medical Optics Inc. | Pre-stressed haptic for accommodating intraocular lens |
| US9968441B2 (en) | 2008-03-28 | 2018-05-15 | Johnson & Johnson Surgical Vision, Inc. | Intraocular lens having a haptic that includes a cap |
| US10052194B2 (en) | 2009-06-26 | 2018-08-21 | Johnson & Johnson Surgical Vision, Inc. | Accommodating intraocular lenses |
| US10105215B2 (en) | 2009-08-03 | 2018-10-23 | Johnson & Johnson Surgical Vision, Inc. | Intraocular lens and methods for providing accommodative vision |
| US9603703B2 (en) | 2009-08-03 | 2017-03-28 | Abbott Medical Optics Inc. | Intraocular lens and methods for providing accommodative vision |
| US9987125B2 (en) | 2012-05-02 | 2018-06-05 | Johnson & Johnson Surgical Vision, Inc. | Intraocular lens with shape changing capability to provide enhanced accomodation and visual acuity |
| KR20160040807A (en) * | 2014-10-06 | 2016-04-15 | 한국과학기술연구원 | Intraocular lens with fine pattern |
| US11707354B2 (en) | 2017-09-11 | 2023-07-25 | Amo Groningen B.V. | Methods and apparatuses to increase intraocular lenses positional stability |
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