JPS58216052A - Anterior part cavity floating type intraocular lens - Google Patents
Anterior part cavity floating type intraocular lensInfo
- Publication number
- JPS58216052A JPS58216052A JP9842182A JP9842182A JPS58216052A JP S58216052 A JPS58216052 A JP S58216052A JP 9842182 A JP9842182 A JP 9842182A JP 9842182 A JP9842182 A JP 9842182A JP S58216052 A JPS58216052 A JP S58216052A
- Authority
- JP
- Japan
- Prior art keywords
- lens
- intraocular lens
- anterior chamber
- anterior
- floating
- 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.)
- Granted
Links
- 210000000695 crystalline len Anatomy 0.000 claims description 101
- 210000002159 anterior chamber Anatomy 0.000 claims description 35
- 210000001508 eye Anatomy 0.000 claims description 21
- 210000004087 cornea Anatomy 0.000 claims description 17
- 210000005252 bulbus oculi Anatomy 0.000 claims description 15
- 210000001742 aqueous humor Anatomy 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 5
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims description 4
- 239000012780 transparent material Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 3
- 239000000113 methacrylic resin Substances 0.000 claims description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 229920001225 polyester resin Polymers 0.000 claims description 2
- 239000004645 polyester resin Substances 0.000 claims description 2
- 208000002177 Cataract Diseases 0.000 description 8
- 238000001356 surgical procedure Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- 206010036346 Posterior capsule opacification Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000004304 visual acuity Effects 0.000 description 2
- 210000004127 vitreous body Anatomy 0.000 description 2
- 201000009487 Amblyopia Diseases 0.000 description 1
- 208000028006 Corneal injury Diseases 0.000 description 1
- 241001122767 Theaceae Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 210000002294 anterior eye segment Anatomy 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
この発明は、眼内用レンズ殊に眼部前房内に使用される
レンズの改良に関する。DETAILED DESCRIPTION OF THE INVENTION This invention relates to improvements in intraocular lenses, particularly lenses for use in the anterior chamber of the eye.
との種眼内用レンズは、老人に多い白内障摘出手術に伴
なう水晶体の欠損を補完する目的で使用され、視覚系を
光学的に補う方法として多くの利点をもち、白内障手術
後の社会復帰は勿論日常生活に著しく寄与するものとし
て高く評価されている。These intraocular lenses are used to compensate for defects in the crystalline lens that occur during cataract removal surgery, which is common in the elderly.They have many advantages as a method of optically supplementing the visual system, and are useful in society after cataract surgery. Of course, the recovery is highly evaluated as something that makes a significant contribution to daily life.
しかしその反面、眼内用レンズは白内障手術後に眼内に
挿入されるため眼部への適応性と挿＾技法忙細心の注意
を払うことが必要であり、さらに眼内におけるレンズの
支持方法の問題や異物排出作用など現状では適応上桟さ
れた課題と制約もあっ゛てそれらの対応策も強く要望さ
れている。On the other hand, since intraocular lenses are inserted into the eye after cataract surgery, it is necessary to pay close attention to their adaptability to the eye and the insertion technique, as well as the method of supporting the lens within the eye. Currently, there are issues and constraints that have been addressed in terms of adaptation, such as problems and foreign matter ejection, and there is a strong need for countermeasures to address them.
この発明の目的は、上記のような従来の眼内用レンズに
おける問題点を著しく軒減した新規な眼内用レンズを経
済的に提供することにあり、他の目的は眼組織への障害
や角膜傷を回避できる特異な作用を具備した新規な構想
の眼内用レンズを提供することにある。The purpose of the present invention is to economically provide a novel intraocular lens that significantly reduces the problems of conventional intraocular lenses as described above, and other purposes are to provide a novel intraocular lens that significantly reduces the problems of conventional intraocular lenses. An object of the present invention is to provide an intraocular lens with a novel concept that has a unique function that can avoid corneal scars.
すなわち、本発明の要旨とするところは、前眼部前房内
腔の前房水の比重と大差のない比重を有する透明材質か
らなるレンズであり、該レンズの形状は外形が円形また
は略円形に近い形状を呈し、前面には眼球の角膜曲面の
曲率半径より小さい曲率半径の湾曲面を有するレンズで
あって、前記前眼部前房内腔に挿入（装着）されたとき
該眼内レンズは、生きして眼球の上下左右動によって生
ずる押圧力並びに前房水の流下および流上の対流作用に
より、水晶体側へ押、しやられ結果的には眼内レンズは
角膜後面より遠ざかった状態で前房内腔に浮遊支持され
る作用を具備せしめた構成であることを特徴とする前眼
部前房内腔浮遊型眼内用レンズにある。That is, the gist of the present invention is a lens made of a transparent material having a specific gravity that is not significantly different from the specific gravity of the anterior aqueous humor in the anterior chamber of the anterior chamber of the anterior eye, and the shape of the lens is circular or approximately circular in outer shape. , and has a curved surface on the front surface with a radius of curvature smaller than the radius of curvature of the corneal curved surface of the eyeball, and when inserted (installed) into the anterior chamber cavity of the anterior segment of the eye, the intraocular lens During life, the intraocular lens is pushed and pushed toward the lens by the pressing force generated by vertical and horizontal movement of the eyeball and the convective action of the anterior aqueous humor flowing down and up, and as a result, the intraocular lens is moved away from the posterior surface of the cornea. A floating intraocular lens in the anterior chamber of the anterior chamber of the eye, characterized in that it has a structure that allows it to float and be supported in the anterior chamber.
本発明において、前眼部前房内腔の前房は角膜と虹彩と
の間欠存在する隙間であって眼房水が充満しており、と
の前房内腔に、白内障摘出手術に伴なう水晶体の欠損を
補充するためのレンズを挿入するのであるが、このレン
ズは前房水の比重と大差のない比重を有する透明材質例
えば透明なメチルメタアクリル樹脂、アクリルニトリル
樹脂、シリコン系樹脂、ポリエステル樹脂などのプラス
チックまたはガラスなどの光学的に使用できる屈折率の
高い材料例えば＋２０ジオプター（２）が使用される。In the present invention, the anterior chamber of the anterior chamber of the anterior eye segment is an intermittent gap between the cornea and the iris that is filled with aqueous humor. A lens is inserted to replace the defect in the crystalline lens, and this lens is made of a transparent material with a specific gravity not much different from the anterior aqueous humor, such as transparent methyl methacrylic resin, acrylonitrile resin, silicone resin, etc. Plastics such as polyester resins or optically usable high refractive index materials such as glass, for example +20 diopters (2), are used.
このレンズの形状は、前房水内に浮遊状態に維持されて
角膜と共に強度の平凸レンズあるいは凹凸レンズを形ず
くり白内障手術眼部の視力を光学的に補助する作用をな
すものであるから、当然外形が水晶体および前房のそれ
に似た円形または略円形に近い形状が形状が窒ましく、
その直径は角膜の平絢横径１２＋ｍ平均縦径１１聾より
も小さい４．０瓢ないし７．５ ｔｅａ位の範囲が光学
的にも眼球の組織学的にも理想的である。またレンズの
前面は、角膜曲面即ち゛角膜の平均曲率半径約８鴎に近
似しているかまたはそれよりも小さい曲率半径Ｒ例えば
６．５叫の湾曲面を有するように構成することが本発明
において重要でかつ新規な事柄である。な詮レンズの後
面は虹彩側に向かって滑らかなレンズ（隆起部など）を
形成して光学的には視力を完全に補助するように構成さ
れる。The shape of this lens is maintained in a floating state within the anterior aqueous humor, forming a strong plano-convex or concave-convex lens together with the cornea, which optically assists the visual acuity of the eye undergoing cataract surgery. Naturally, a circular or nearly circular shape similar to that of the crystalline lens and anterior chamber is unpleasant in shape.
The ideal diameter range is from 4.0 to 7.5 tea, which is smaller than the flat transverse diameter of the cornea (12 + m) and the average longitudinal diameter (11), from an optical perspective as well as from the histology of the eyeball. In the present invention, the front surface of the lens may be configured to have a corneal curved surface, that is, a curved surface with a radius of curvature R that is close to or smaller than the average radius of curvature of the cornea, for example, 6.5 mm. This is an important and new matter. The rear surface of the lens forms a smooth lens (such as a ridge) toward the iris, and is optically configured to completely assist vision.
以下本発明眼内用レンズの実施例を添付図面により説明
すると、第１図は本発明浮遊型眼内レンズの一実施例を
示す断面図、第２図は第１図の実施例レンズを前眼部前
房内腔に挿入したときの眼球全体の水平断面説明図であ
って、眼球１の角膜２と碍子体３の間、に位置して前眼
部前房４と水晶体５が存在し、その前房４の内腔には、
第１図に示した直径約５ＩＷＩのレンズ１０の前面１１
に曲率半径（６）約６．５簡の湾曲面を有する厚さ約０
．６ ｔｔｒａの透明アクリルニトリル製レンズ１０を
挿入し浮遊せしめて成るものである。Examples of the intraocular lens of the present invention will be explained below with reference to the accompanying drawings. Figure 1 is a sectional view showing an example of the floating intraocular lens of the present invention, and Figure 2 is a front view of the example lens of Figure 1. This is an explanatory horizontal cross-sectional view of the entire eyeball when inserted into the anterior chamber of the eye, and shows that the anterior chamber of the eye 4 and the crystalline lens 5 are located between the cornea 2 and the insulator 3 of the eyeball 1. , in the lumen of its anterior chamber 4,
Front surface 11 of a lens 10 with a diameter of about 5 IWI shown in FIG.
A curved surface with a radius of curvature (6) of approximately 6.5 cm and a thickness of approximately 0
．． A 6 ttra transparent acrylonitrile lens 10 is inserted and suspended.
この場合レンズ１０の後面は滑らかに形成することによ
り浮遊作用上も光学的にも好ましい結果をもたらすもの
である□
本発明は、前眼部前房４内腔の前房水内に、前房水の比
重に大差のない比重を有する透明材質からなるレンズを
挿入し、該レンズの形状を外形は円形または略円形に近
い形状となし且つレンズの前面１１には眼球の角膜曲面
に近似の湾曲面をもたせたとき、核前房水内に挿入され
た眼内レンズ１ｏは主として眼球の上下左右動によって
生ずる押圧力の作用により湾曲面を有する眼内レンズ１
０を水晶体５の方へ押しやられ結果的に眼内レンズ１０
は角膜２の後面から遠ざかった状態で前房内腔に浮遊支
持されるという作用効果が存在することの新しい知見に
基づいて新規な構成の眼内用レンズ１ｏを創出するに至
ったのである。In this case, by forming the rear surface of the lens 10 smoothly, it brings about favorable results both in terms of floating effect and optically. □ The present invention provides a method for forming an anterior chamber in the anterior aqueous humor of the inner cavity of the anterior chamber 4 of the anterior segment of the eye. A lens made of a transparent material having a specific gravity not much different from that of water is inserted, and the outer shape of the lens is circular or approximately circular, and the front surface 11 of the lens is curved to approximate the corneal curve of the eyeball. When the intraocular lens 1o is inserted into the anterior aqueous humor, the intraocular lens 1o has a curved surface mainly due to the pressing force generated by vertical and horizontal movements of the eyeball.
0 is pushed towards the crystalline lens 5 and as a result, the intraocular lens 10
Based on the new knowledge that there is an effect that the intraocular lens 1o is floating and supported in the anterior chamber while being far from the posterior surface of the cornea 2, an intraocular lens 1o with a novel configuration was created.
すなわち眼球１は睡眠時以外は絶えず上下左右動を繰り
返えしており、当然眼球内にレンズを挿入したときはそ
のレンズも上下左右動を生ずる事になるが、その時、レ
ンズ１ｏの前面１１に湾曲面が存在するとレンズ１０に
は眼球の上下左右動によって生ずる押圧力が作用して前
房４内に存在する眼内レンズ１０を絶えず後方へ押しや
る力が働くことになり、（゛この場合前房４の前房水の
流下および流上の対流作用によるレンズ１０の水晶体側
への押しやられる力を当てにしなくとも）結局レンズ１
０は前房４内の前房水内に殆ど浮遊するが如く支持せし
められることになるのである。In other words, the eyeball 1 constantly repeats vertical and horizontal movements except during sleep, and of course when a lens is inserted into the eyeball, the lens also causes vertical and horizontal movements, but at that time, the front surface 11 of the lens 1o If there is a curved surface in the lens 10, the pressing force generated by the vertical and horizontal movement of the eyeball will act on the lens 10, and a force will constantly push the intraocular lens 10 existing in the anterior chamber 4 backward, (in this case In the end, the lens 1
0 will be supported in the anterior aqueous humor within the anterior chamber 4, almost floating.
浮遊作用をさらに効果的に且つ光学的に中心維持を好ま
しいものとするならば、レンズ１０の後面の虹彩側はゆ
るやかに滑らかな表面にしておくことが良好な結果をも
たらすものである。In order to make the floating effect more effective and to maintain the center optically, it is desirable to have a gently smooth surface on the rear surface of the lens 10 on the iris side.
この実施例の眼内レンズ１０の構成によると、眼球の上
下左右動によって生ずる押圧力がレンズ１０の前面１１
に設けた角膜曲面の曲率半径より小さい曲率半径Ｒを有
する湾曲面に旨く働いて眼内レンズ１０を絶えず後方に
押しやる作用をなしてレンズ１０を前房４内に浮遊させ
ると共にその後方に押しやる力（図面の矢印方向）が働
き、その結果としてレンズ１０を角膜２後面より遠ざけ
て眼内レンズによる角膜２の損傷という事態を回避する
ことができ、眼内レンズ１０としての充分な光学的作用
を奏するという特異な作用効果を期待出来るのである。According to the configuration of the intraocular lens 10 of this embodiment, the pressing force generated by vertical and horizontal movements of the eyeball is applied to the front surface of the lens 10.
A force that acts effectively on the curved surface having a radius of curvature R smaller than the radius of curvature of the curved corneal surface provided in the cornea and constantly pushes the intraocular lens 10 backward, causing the lens 10 to float in the anterior chamber 4 and pushing it backward. (in the direction of the arrow in the drawing) works, and as a result, the lens 10 can be moved away from the posterior surface of the cornea 2 to avoid damage to the cornea 2 caused by the intraocular lens, and the intraocular lens 10 can have sufficient optical effects. You can expect the unique action and effect of playing.
本発明に基づく構成の眼内用レンズによると、特に白内
障を摘出した眼部者の前眼部前房内腔用の眼内レンズと
して光学的には前房内に浮遊状態に支持せしめられ、し
かも眼内レンズ挿入による角膜の損傷という事態を回避
できるという極めて理想的な眼内用レンズを提供できる
もので、レンズ自体の製造も眼部者の症状に合せて適合
するレンズを容易に行えるなど白内障眼患者の弱視予防
、視力回復に大きく貢献できるという特長がある。According to the intraocular lens configured according to the present invention, it is optically supported in a floating state within the anterior chamber as an intraocular lens for the anterior chamber of the anterior eye of an eye patient who has had a cataract removed. Furthermore, it is possible to provide an extremely ideal intraocular lens that avoids damage to the cornea due to intraocular lens insertion, and the lens itself can be manufactured easily to suit the symptoms of the eye patient. Its unique feature is that it can greatly contribute to preventing amblyopia and restoring visual acuity in patients with cataract eyes.
第１図は本発明の実施例を示す浮遊型眼内レンズの断面
図、第２図は第１図の実施例眼内レンズを前眼部前房内
腔に挿入したときの実施例説明図であって、図中、１は
眼球、２は角膜、３は碍子体、４は前房、５は水晶体、
６は虹彩、１０は眼内用レンズ、１１はレンズ１０の湾
曲面達有する前面、Ｒは曲率半径。
手続補正書（自発）
昭和５８年 ／月ｌＯ日
特許庁長官若杉和夫殿
１ 事件の表示
昭和５７年特許願第０９８４２１号
２ 発明の名称
３ 補市をする者
事件との関係 特許出願人
電話 土浦０２９８（２３）４８２８ ”４・ 補
正命令０日付 自発 シー〜６、補
正の内容
（１）明細書第６頁第１５行中１碍子体３」の１碍」を
「硝」と補正する。
（２）明細書第６頁第１６行中の「水晶体５が存在し、
」と１その前房４の」との間に次の字句を挿入する。
「この水晶体５の大部分は白内障摘出手術に伴ない実際
はこの第２図から消えたかたち（第３図参照）となって
いるのが普通であり、摘出手術により無くなった水晶体
５に代えて従来はその位置に重量のあるガラス製または
プラスチック類のレンズを挿入するのであるが、本発明
においては前房４内腔の前房水の対流作用に着目して、
Ｊ
（３）明細書第７頁第１１行中の「水晶体５」と１の方
へ押しやら」との間に次の字句を挿入する。
ｒ（この水晶体５は実際は白内障摘出手術に伴ない第２
図から消えたかたち（第３図参照）となるので、この水
晶体５が除かれた跡には力によって押しやられるかたち
になり、一方透明なゾルの硝子体３自体も虹彩６側へ膨
らむかたちと逐って前房４と硝子体３とは、後れること
になるのである。）」
（４） 明細書第９頁下から第３行中の「３は碍子体
」の「碍」を「硝」と補正する。
（５）明細書第９頁末尾に次の字句を加入する。
［−第３図は、白内障にかかった水晶体５を手術により
摘出した眼球の説明図。第４図は水晶体５を摘出したの
ち本発明眼内用レンズ１０を前房４内に挿入した場合の
説明図。」（６）添付図面として、第３″図と第４図を
加入する。Fig. 1 is a cross-sectional view of a floating intraocular lens showing an embodiment of the present invention, and Fig. 2 is an explanatory diagram of the embodiment when the intraocular lens of Fig. 1 is inserted into the anterior chamber cavity of the anterior segment of the eye. In the figure, 1 is the eyeball, 2 is the cornea, 3 is the insulator, 4 is the anterior chamber, 5 is the crystalline lens,
6 is the iris, 10 is an intraocular lens, 11 is the front surface of the lens 10 having a curved surface, and R is the radius of curvature. Procedural amendment (spontaneous) 1985/Month 10th Mr. Kazuo Wakasugi, Commissioner of the Patent Office 1 Display of the case 1982 Patent Application No. 098421 2 Name of the invention 3 Relationship with the case of person who makes an auxiliary market Patent applicant telephone Tsuchiura 0298 (23) 4828 ``4. Amendment Order Date 0 Voluntary C~6, Contents of Amendment (1) ``1 Go'' of ``Insulator 3'' on page 6, line 15 of the specification is amended to ``Glass''. (2) “Lens 5 exists,” in page 6, line 16 of the specification,
Insert the following lexical phrase between `` and `` of its anterior chamber 4''. ``Most of this lens 5 actually disappears from this figure 2 (see figure 3) due to cataract removal surgery, and in place of the crystalline lens 5 that disappeared due to cataract removal surgery, A heavy glass or plastic lens is inserted in that position, but the present invention focuses on the convective action of anterior aqueous humor in the inner cavity of the anterior chamber 4.
J (3) Insert the following phrase between "Crystalline lens 5" and "Push it toward 1" in page 7, line 11 of the specification. r (This crystalline lens 5 is actually the second crystalline lens associated with cataract removal surgery.
Since the lens 5 disappears from the diagram (see Figure 3), the area where the crystalline lens 5 is removed has a shape that has been pushed away by force, while the transparent sol vitreous body 3 itself also bulges toward the iris 6. As a result, the anterior chamber 4 and the vitreous body 3 will fall behind. )” (4) In the third line from the bottom of page 9 of the specification, “3 means insulator”, “碍” is amended to “sai”. (5) Add the following phrase at the end of page 9 of the specification. [-FIG. 3 is an explanatory diagram of an eyeball in which the crystalline lens 5 affected by cataract has been surgically removed. FIG. 4 is an explanatory diagram when the intraocular lens 10 of the present invention is inserted into the anterior chamber 4 after the crystalline lens 5 is extracted. (6) Figures 3'' and 4 are included as attached drawings.
Claims (1)
近い形状を呈し、前面には眼球の角膜曲面の曲率半径よ
り小さい曲率半径の湾曲面を有するレンズであって、前
記前眼部前房内腔に挿入されたとき該眼内レンズは主と
して眼球の上下左右動によって生ずる押圧力により湾曲
面を有する眼内レンズを水晶体の方へ押しやられ結果的
には眼内レンズは角膜後面から遠ざかった状態で前房内
腔に浮遊支持される作用を具備せしめた構成であること
を特徴とする前眼部前房内腔浮遊型眼内用レンズ（２）
前眼部前房内腔の前房水の比重と大差のない比重を
有する透明な材質例えばメチルメタアクリル樹脂、アク
リルニトリル樹脂、ポリエステル樹脂などのプラスチッ
クまたはガラスのレンズから構成される特許請求の範囲
第１項記載ｄ浮遊型眼内用レンズ （３）外形の形状が円形捷たは略それに近い形状を有し
、且つ角膜曲面の曲率半径と近似するかまたはそれより
も小さい曲率半径の湾曲面を前面に持つことを特徴とす
る特許請求の範第１項記載の浮遊型眼内用レンズ （４）外形の形状が円形または略それに近い形状を有す
る透明のメチルメタアクリル樹脂、アクリルニトリル樹
脂製等の光学的レンズから成る特許請求の範囲第１項記
載の浮遊型眼内用レンズ （５） レンズが前眼部前房内腔に挿入（装着）され
たとき該眼内レンズは、主として眼球の上下左右動によ
って生ずる押圧力により従的に、は前房水の流下および
流上の対流作用により、水晶体側へ押しやられ結果的に
は眼内レンズは角膜後面より遠ざかった状態で前房内腔
に、浮遊支持される作用を具備するための眼球角膜曲面
の曲率半径に近似しているかまたはそれよりも小さい曲
率半径の湾曲面をレンズの前面に設けて成る特許請求の
範囲第１項記載の浮遊型眼内用レンズ （６）外形の形状が円形まだは略それに近い形状を有す
る光学的レンズであって、レンズの中央部社必要に応じ
中空部に形成し空気部分を光学的レンズの一部として構
成することを特徴とする特許請求の範囲第１項記載の浮
遊型眼内用レンズ[Scope of Claims] (1) It exhibits a shape similar to the specific gravity of the anterior aqueous humor in the anterior chamber of the anterior chamber of the eye, and has a curved surface on the front surface with a radius of curvature smaller than the radius of curvature of the curved surface of the cornea of the eyeball. When the intraocular lens is inserted into the anterior chamber cavity of the anterior eye, the intraocular lens having a curved surface is pushed toward the crystalline lens by the pressing force mainly caused by vertical and horizontal movements of the eyeball. Specifically, the intraocular lens is a floating intraocular lens in the anterior chamber of the anterior eye, characterized in that it is configured to be suspended and supported in the anterior chamber while being away from the posterior surface of the cornea. 2)
Claims consisting of a lens made of a transparent material, such as plastic or glass, such as methyl methacrylic resin, acrylonitrile resin, or polyester resin, which has a specific gravity that is not significantly different from the specific gravity of the anterior aqueous humor in the anterior chamber of the anterior chamber of the eye. Paragraph 1 d Floating intraocular lens (3) A curved surface whose external shape is circular or approximately circular, and whose radius of curvature is close to or smaller than the radius of curvature of the curved surface of the cornea. Floating intraocular lens (4) according to claim 1, characterized in that it has a circular outer shape or a substantially circular outer shape, and is made of transparent methyl methacrylic resin or acrylonitrile resin. The floating intraocular lens (5) according to claim 1, which comprises an optical lens such as Due to the pressing force generated by the vertical and horizontal movement of the intraocular lens, the intraocular lens is pushed toward the crystalline lens by the convective action of the anterior aqueous humor flowing down and up, and as a result, the intraocular lens is pushed away from the posterior surface of the cornea into the anterior chamber. Claim 1, wherein a curved surface having a radius of curvature that is close to or smaller than the radius of curvature of the curved surface of the cornea of the eye is provided on the front surface of the lens to provide a floating support function in the cavity. Floating intraocular lens (6) is an optical lens whose external shape is circular or approximately close to it, and the central part of the lens is formed into a hollow part if necessary, and the air part is formed into a hollow part of the optical lens. Floating intraocular lens according to claim 1, characterized in that it is constituted as a part of the lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9842182A JPS58216052A (en) | 1982-06-11 | 1982-06-11 | Anterior part cavity floating type intraocular lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9842182A JPS58216052A (en) | 1982-06-11 | 1982-06-11 | Anterior part cavity floating type intraocular lens |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58216052A true JPS58216052A (en) | 1983-12-15 |
| JPH0263016B2 JPH0263016B2 (en) | 1990-12-27 |
Family
ID=14219350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9842182A Granted JPS58216052A (en) | 1982-06-11 | 1982-06-11 | Anterior part cavity floating type intraocular lens |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58216052A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152873A (en) * | 1984-08-20 | 1986-03-15 | オプチカル ラジエ−シヨン コ−ポレイシヨン | Production of intraocular lens absorbing ultraviolet rays |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971073A (en) * | 1975-04-09 | 1976-07-27 | American Optical Corporation | Artificial intraocular lens |
| JPS51151149A (en) * | 1975-06-06 | 1976-12-25 | Inprohold Ets | Artificially transplanted lens |
| JPS5239987A (en) * | 1975-09-22 | 1977-03-28 | American Optical Corp | Artificial crystalline lens and method of manufacturing the same |
| US4261065A (en) * | 1979-07-27 | 1981-04-14 | Tennant Jerald L | Artificial intraocular lens with forward-positioned optics |
-
1982
- 1982-06-11 JP JP9842182A patent/JPS58216052A/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3971073A (en) * | 1975-04-09 | 1976-07-27 | American Optical Corporation | Artificial intraocular lens |
| JPS51151149A (en) * | 1975-06-06 | 1976-12-25 | Inprohold Ets | Artificially transplanted lens |
| JPS5239987A (en) * | 1975-09-22 | 1977-03-28 | American Optical Corp | Artificial crystalline lens and method of manufacturing the same |
| US4261065A (en) * | 1979-07-27 | 1981-04-14 | Tennant Jerald L | Artificial intraocular lens with forward-positioned optics |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6152873A (en) * | 1984-08-20 | 1986-03-15 | オプチカル ラジエ−シヨン コ−ポレイシヨン | Production of intraocular lens absorbing ultraviolet rays |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0263016B2 (en) | 1990-12-27 |
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