JP4823521B2 - ヒトの眼の高次収差を補正するための装置および方法 - Google Patents
ヒトの眼の高次収差を補正するための装置および方法 Download PDFInfo
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Description
図4には、波面収差器を製造するためのシステムが、全体的に符号(130)によって示されている。このシステム(130)は、発光ダイオード(LED)アレイパネル(132)を備えている。このLEDアレイパネル(132)は、距離(134)という離間距離でもって互いに隣接配置された複数のダイオード(135,137)を有しているとともに、インターフェース(138)を介してコンピュータ(136)によって制御されている。好ましい実施形態においては、ダイオード(135,137)間の離間距離(134)は、変更可能であり、典型的には、およそ3.175mm(0.125インチ)とすることができる。しかしながら、他の離間距離とすることもできる。拡散部材(140)を、LEDアレイパネル(132)と波面収差器(100)との間に配置することができる。これにより、LEDアレイパネル(132)から放出される光を、拡散させて、より円滑な屈折率プロファイルを形成することができる。
図8は、波面収差器(100)の代替可能な実施形態を示す側面図であって、面(233)を有したレンズの形状として形成された透明カバー(232)を備えている。透明カバー(232)は、正の屈折力を有したレンズとされている。これに代えて、負の屈折力を有したレンズ、および、円筒形の(非点収差の)屈折力を有したレンズ、を使用することもできる。面(233)と透明カバー(232)との間には、屈折率を変更可能な放射線硬化可能樹脂からなる層(234)が介装されている。透明カバー(232)は、球形の屈折面(238)を有しており、この屈折面(238)は、光学部材として機能する。よって、透明カバー(232)は、放射線硬化可能樹脂層(234)と組み合わせることにより、焦点合わせ特性と、波面フェーズプロファイル特性と、の双方を有した光学部材を提供する。
図10は、波面収差器の代替可能な実施形態を、全体的に符号(300)によって斜視図により示している。波面収差器(300)は、ヒトの眼(400)の局所的なかつ非一様な歪曲を補正することができるとともに、従来技術と比較して、より複雑な治療を行うことができる。ヒトの眼(400)は、様々な構成要素から構成されており、角膜(402)と、網膜(404)と、水晶体(416)(図13に図示されている)と、を備えている。波面収差器(300)は、眼(400)の角膜(402)の前方表面上に、直接的に設置されている。
図10〜図13に示す波面収差器(300)は、任意の様々な手法によって製造することができる。これら手法においては、レンズ(312,314)は、眼(400)上に配置され得るような寸法とされる。一手法においては、第1ステップとして、内側レンズ(312)の凸状表面あるいは外側レンズ(314)の凹状表面のいずれか一方の表面を、放射線硬化可能樹脂によってコーティングし、これにより、放射線硬化可能樹脂層(316)を形成する。次に、内側レンズ(312)の凸状表面あるいは外側レンズ(314)の凹状表面のいずれか他方の表面を、放射線硬化可能樹脂層(316)の露出面上に配置する。最後に、所望の屈折率プロファイルに基づき、光によって放射線硬化可能樹脂層(316)を硬化する。
102 透明カバー
104 放射線硬化可能樹脂層
106 透明カバー
108 バリア
110 領域
112 領域
114 領域
232 透明カバー
234 屈折率を変更可能な放射線硬化可能樹脂からなる層
240 波面収差器
242 透明ウィンドウ
244 屈折率変更可能な放射線硬化可能樹脂からなる層
300 波面収差器
310 付属錘
312 内側レンズ
314 外側レンズ
316 放射線硬化可能樹脂層
318 バリア
400 眼
500 波面収差器
Claims (11)
- コンタクトレンズを製造するための方法であって、
複数の領域を有した放射線硬化可能樹脂を準備し;
前記各領域を、所望の屈折率プロファイルとなるようにして、硬化させ、ここで、前記屈折率プロファイルを、眼の高次収差と低次収差とのすべての組合せに対応したものとし、これにより、前記波面収差器を、眼に設置されたときに、眼の高次収差と低次収差との少なくとも1つを実質的に補正するものとし;
ヒトの眼に対して設置し得るようにして、硬化させた放射線硬化可能樹脂をパッケージングする;
という方法において、
前記パッケージングに際しては、外側レンズと内側レンズとの間に前記放射線硬化可能樹脂を接着し、
前記内側レンズを、眼に対して設置し得るよう構成し、
前記放射線硬化可能樹脂を、前記屈折率プロファイルが眼の欠陥に対応した位置に隣接するような向きとすることを特徴とする方法。 - 請求項1記載の方法において、
前記複数の領域の前記所望の屈折率を、ヒトの眼の複数の欠陥に対応したものとすることを特徴とする方法。 - 請求項1記載の方法において、
前記放射線硬化可能樹脂を、エポキシを備えたものとすることを特徴とする方法。 - 請求項1記載の方法において、
前記放射線硬化可能樹脂を、液晶ポリマーを備えたものとすることを特徴とする方法。 - コンタクトレンズを製造するための方法であって、
各領域が屈折率初期値を有しているような複数の領域を備えた放射線硬化可能樹脂を準備し;
所定の屈折率プロファイルに実質的に適合するようにして前記複数の領域のそれぞれの屈折率を変更し、この変更を、前記複数の領域の各々に対してポイント状光源を照射することにより行い、ここで、前記屈折率プロファイルを、眼の高次収差と低次収差とのすべての組合せに対応したものとし、これにより、前記波面収差器を、眼に設置されたときに、眼の高次収差と低次収差との少なくとも1つを実質的に補正するものとする;
という方法において、
外側レンズと内側レンズとの間に前記放射線硬化可能樹脂を接着し、
前記内側レンズを、前記屈折率プロファイルが眼の欠陥に対応した位置に隣接するような向きでもって、眼に対して設置され得るよう構成することを特徴とする方法。 - 請求項5記載の方法において、
前記ポイント状光源を、レーザーを備えたものとすることを特徴とする方法。 - 請求項6記載の方法において、
前記複数の領域の各々に対して前記ポイント状光源を照射しつつ、前記複数の領域の各々に対して所定強度の電磁界を印加することを特徴とする方法。 - 請求項7記載の方法において、
前記放射線硬化可能樹脂を、液晶ポリマーを備えたものとすることを特徴とする方法。 - 請求項6記載の方法において、
前記レーザーによって前記複数の領域の各々を選択的に照射する際には、レーザー照射時間とレーザー照射強度との一方または双方を調節することを特徴とする方法。 - 請求項5記載の方法において、
さらに、
前記変更時には、前記複数の領域の少なくとも1つの領域に関し、その時点での屈折率を検出し;
当該時点での前記屈折率が、前記屈折率プロファイルに一致しているかどうかを決定し;
一致していない場合には、前記レーザーの少なくとも1つのパラメータを変更する;
ことを特徴とする方法。 - 請求項10記載の方法において、
前記レーザーの前記パラメータを、レーザー照射時間、および、レーザー強度、とすることを特徴とする方法。
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US7695134B2 (en) | 2010-04-13 |
ATE359535T1 (de) | 2007-05-15 |
ES2286488T3 (es) | 2007-12-01 |
US7293871B2 (en) | 2007-11-13 |
WO2004015481A1 (en) | 2004-02-19 |
EP1535104A1 (en) | 2005-06-01 |
EP1535104B1 (en) | 2007-04-11 |
US20080252845A1 (en) | 2008-10-16 |
AU2003258002A1 (en) | 2004-02-25 |
DE60313182T2 (de) | 2007-12-20 |
AU2003258002B2 (en) | 2009-10-01 |
US20030003295A1 (en) | 2003-01-02 |
DE60313182D1 (de) | 2007-05-24 |
JP2005535921A (ja) | 2005-11-24 |
EP1750162A3 (en) | 2008-07-16 |
EP1750162A2 (en) | 2007-02-07 |
JP2011154408A (ja) | 2011-08-11 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |
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