【発明の詳細な説明】この発明は、水晶体摘出手術時の水晶体の代用として眼
球内に移植する人工水晶体に、乱視度数を新しく加入し
た医療器具に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a medical device in which an astigmatic power is newly added to an artificial lens implanted into the eyeball as a substitute for the crystalline lens during lens extraction surgery.
従来の人工水晶体は、光学部分に球面レンズまたは平面
レンズを使用したものに限定されていた。Conventional artificial crystalline lenses have been limited to those using spherical lenses or flat lenses in the optical part.
したがって、これらの人工水晶体は、手術前に乱視のな
い人に移植した場合は有効であるが、手術前に比較的大
きい乱視を持つ人に移植した場合は、術後においてもそ
の乱視は矯正されないまま残るために、別に乱視矯正用
眼鏡の装用を余儀なくされてきた。Therefore, these artificial lenses are effective when implanted in a person without astigmatism before surgery, but if they are implanted in a person with relatively large astigmatism before surgery, the astigmatism will not be corrected even after surgery. In order to maintain my vision, I have been forced to wear glasses to correct astigmatism.
本発明は、その欠点を除くために考えられたものであっ
て、人工水晶体の光学部分に、従来、考慮されていなか
った乱視矯正円柱レンズを加入することによって、乱視
の矯正を人工水晶体でおこなうことをねらったものであ
る。The present invention was devised to eliminate this drawback, and by adding an astigmatism-correcting cylindrical lens, which has not been considered in the past, to the optical part of the artificial crystalline lens, astigmatism is corrected using the artificial crystalline lens. This is what it was aimed at.
したがって、この人工水晶体を移植すれば、術前からあ
る乱視は、術後には消失、あるいは大幅に減少すること
になり、術後の視機能は従来よりも改善される。Therefore, if this artificial crystalline lens is implanted, the astigmatism that existed before the surgery will disappear or be significantly reduced after the surgery, and the visual function after the surgery will be improved more than before.
なお、球面レンズまたは平面レンズに乱視矯正円柱レン
ズを加入したレンズを光学部に使用した人工水晶体の実
施例にはつぎのようなものがある。The following are examples of artificial crystalline lenses in which a lens in which an astigmatism-correcting cylindrical lens is added to a spherical lens or a plane lens is used in the optical part.
（イ）光学部はポリメチルメタクリレート（ｐｏｌｙｍ
ｅｔｈｙｌ−ｍｅｔｈａｃｒｙ＋ａｔｅ＞を材料とし、
また支持部はポリプロピレン（ｐｏｌｙｐｒｏｐｙｌｅ
ｎｅ）を材料として製造し、光学部を、球面レンズまた
は平面レンズに乱視矯正円柱レンズを加入したレンズに
仕上げた人工水晶体く口）光学部はポリメチルメタクリ
レート（ｐｏｌｙｍｅｔｈｙｌ−ｍｅｔｈａｃｒｙｌａ
ｔｅ）を材料とし、また支持部はポリビニリデン（ｐｏ
！ｙｖｉｎｙｌｉｄｅｎｅ−ｆｌｕｏｒｉｄｅ）を材料
として製造し、光学部を、球面レンズまたは平面レンズ
に乱視矯正円柱レンズを加入したレンズに仕上げた人工
水晶体（ハ）光学部および支持部ともに、ポリメチルメタクリ
レート（ｐＯ１ｌ／ｍｅｔｈｌ／ｌ−ｍｅｔｈａｃ＋’
／１ａｔｅ）を材料として製造し、光学部分を球面レン
ズまたは平面レンズに乱視矯正円柱レンズを加入したレ
ンズに仕上げた人工水晶体（ニ）光学部はシリコン（ｓｉｌｉｃｏｎｅ）を材料と
し、支持部はポリプロピレン（ｐｏｌｙｐｒｏｐｙｌｅ
ｎｅ）を材料として製造し、光学部を球面レンズまたは
平面レンズに乱視矯正円柱レンズを加入したレンズに仕
上げた人工水晶体（ホ）光学部および支持部ともに、シ
リコン（ｓｉｌｉｃｏｎｅ）を材料としで製造し、光学
部を球面レンズまたは平面レンズに乱視矯正円柱レンズ
を加入したレンズに仕上げた人工水晶体（へ）光学部および支持部ともに、シリコン（Ｓｉｌｉ
ｃｏｎｅ）を材料として製造し、光学部を球面レンズま
たは平面レンズに乱視矯正円柱レンズを加入したレンズ
に仕上げた人工水晶体（ト）光学部および支持部ともに、ハイドロジェル（ｈ
ｙｄｒｏ−９０１）を材料として製造し、光学部を球面
レンズまたは平面レンズに乱視矯正円柱レンズを加入し
たレンズに仕上げた人工水晶体(a) The optical part is made of polymethyl methacrylate (polymethyl methacrylate).
ethyl-methacry+ate> as a material,
In addition, the support part is made of polypropylene (polypropylene).
The optical part is made of polymethyl methacrylate, and the optical part is made of polymethyl methacrylate.
The supporting part is made of polyvinylidene (po
! Artificial crystalline lens manufactured using polymethyl methacrylate (pO1l/methl) as a material, and the optical part is finished as a lens with an astigmatism-correcting cylindrical lens added to a spherical lens or a plane lens (c). /l-methac+'
The optical part is made of silicone, and the support part is made of polypropylene (2).The optical part is made of silicone and the support part is made of polypropylene ( polypropyle
Artificial crystalline lenses (e) are manufactured using silicone as the material, and the optical part is finished with a spherical lens or a flat lens with an astigmatism-correcting cylindrical lens (e).Both the optical part and the support part are manufactured from silicone. , an artificial crystalline lens whose optical part is made of a spherical lens or a flat lens with an astigmatism-correcting cylindrical lens added. Both the optical part and the support part are made of silicon.
The optical part and support part are both made of hydrogel (h
An artificial crystalline lens manufactured using ydro-901) as a material and whose optical part is a spherical lens or a plane lens with an astigmatism-correcting cylindrical lens added.
第１図は、本発明の平面図である。第２図は、本発明の側面図である。１は、光学部である。２と３は、支持部である。第１図第２図FIG. 1 is a plan view of the present invention.FIG. 2 is a side view of the invention.1 is an optical section.2 and 3 are supporting parts.Figure 1Figure 2
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2907290AJPH03231656A (en) | 1990-02-07 | 1990-02-07 | Artificial eye lens affiliated with astigmatism |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2907290AJPH03231656A (en) | 1990-02-07 | 1990-02-07 | Artificial eye lens affiliated with astigmatism |
| Publication Number | Publication Date |
|---|---|
| JPH03231656Atrue JPH03231656A (en) | 1991-10-15 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2907290APendingJPH03231656A (en) | 1990-02-07 | 1990-02-07 | Artificial eye lens affiliated with astigmatism |
| Country | Link |
|---|---|
| JP (1) | JPH03231656A (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03122816U (en)* | 1990-03-29 | 1991-12-13 |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03122816U (en)* | 1990-03-29 | 1991-12-13 |
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