TW200420930A - Multifocal ophthalmic lenses - Google Patents
Multifocal ophthalmic lenses Download PDFInfo
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- TW200420930A TW200420930A TW093101912A TW93101912A TW200420930A TW 200420930 A TW200420930 A TW 200420930A TW 093101912 A TW093101912 A TW 093101912A TW 93101912 A TW93101912 A TW 93101912A TW 200420930 A TW200420930 A TW 200420930A
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- 230000004438 eyesight Effects 0.000 claims abstract description 18
- 208000001491 myopia Diseases 0.000 claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims description 30
- 230000002079 cooperative effect Effects 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 claims description 3
- 230000004075 alteration Effects 0.000 claims description 2
- 210000004087 cornea Anatomy 0.000 claims description 2
- 201000010041 presbyopia Diseases 0.000 abstract description 5
- 210000000695 crystalline len Anatomy 0.000 description 86
- 239000000463 material Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000001723 curing Methods 0.000 description 4
- 239000000017 hydrogel Substances 0.000 description 4
- 230000000670 limiting effect Effects 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000007516 diamond turning Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- 206010020675 Hypermetropia Diseases 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- JKJJSJJGBZXUQV-UHFFFAOYSA-N methyl 2-methylidenebutanoate Chemical compound CCC(=C)C(=O)OC JKJJSJJGBZXUQV-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 229940098465 tincture Drugs 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/048—Means for stabilising the orientation of lenses in the eye
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
- G02C7/042—Simultaneous type
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
- G02C7/045—Sectorial configuration
-
- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C2202/00—Generic optical aspects applicable to one or more of the subgroups of G02C7/00
- G02C2202/22—Correction of higher order and chromatic aberrations, wave front measurement and calculation
Landscapes
- Health & Medical Sciences (AREA)
- Ophthalmology & Optometry (AREA)
- Physics & Mathematics (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Eyeglasses (AREA)
- Prostheses (AREA)
Description
200420930 A7 五、發明說明(1) 〜 發明所屬之技術領域 本發明關於眼科透鏡。特定言之,本發明提出使用一個以上 的光焦度或焦距且適用於老花眼矯正的透鏡。 5 先前技術 隨著人的年紀增長,眼睛日益無法調適或彎曲水晶體以聚焦 於較接近觀看者的物體。此症狀一般稱為老花眼。相似地,對
於已摘除水晶體且裝入一眼内鏡片作為替代物的人來說,全然 沒有調適能力。 N 10 在用以矯正老花眼的方法當中有-為單視力系統(mono— vision system),其中患者配戴著一個視遠用隱形眼鏡和一視 近用透鏡。此單視力系統允許戴鏡者辨別遠距和近距物體,但 缺點在於導致實質喪失深度感。 經濟部智慧財產局員工消費合作社印製 另一種老化眼矯正方法為使用提供視遠及視近光焦度或是視 15遠、視近和視中光焦度的隱形眼鏡。此等透鏡克服了深度感喪 失的問題且通常使用視遠光焦度和視近光焦度之交錯同心環或 父錯控向H段。然而,此料鏡的問題在於其使得戴鏡者的視 網膜暴露於兩個影像:一個對焦影像和一個失焦影像。此二影 像對於視近力來說沒有壞處,因為在鏡片之視近區段内看到的 20失焦遠距物體不但不會干擾視近解析度反而有助於視近解析 度。其原因在於失焦遠距物體係處於一不會干擾到近距影像的 取向。 然而,此等透鏡的視遠力有問題。當戴鏡者藉由透鏡觀看遠 距倾時近距衫像先於遠距影料縣點。鼠,失焦的近 25距影像被顛倒並且干擾到遠距物體的影像。是以需要一種克服 —- _—___ _ 3 - 本紙張尺細中國國家標準^- 經濟部智慧財產局員工消費合作社印製 200420930 A7 五、發明說明(2) " ' 習知透鏡之缺點的多焦點透鏡。 實施方式 本發明提出老花眼矯正方法,用於此矯正方法的透鏡,以及 5本發明透鏡之製造方法。每一本發明透鏡提供視遠力和視近力 矯正。該等透鏡提供優於傳統多焦點透鏡的更高視遠力品質, 因為此等透鏡之視近部分對於視遠力的影響小於傳統透鏡。在 本發明透鏡中,視近區段對視遠力之干擾約較傳統透鏡之視近 區段減輕至少約50%。 10 在一實施例中,本發明提出一種用於透鏡配戴者之眼科透 鏡,其本質上包括一具有交錯的視遠光焦度區段及視近光焦度 區段之光學區,其中該等視近光焦度區段是不對稱的。 文中、、不對稱的(asymmetrical) ”意指在已知位在透鏡表 面之一視近光焦度區段上的任一第一點的條件下,在該表面上 15以該透鏡之中心為軸心相對於該第一點處於一 180度對應位置 的任一第二點係一位在該表面之一視遠光焦度區段上的點。本 發明透鏡之視近光焦度區段可為相互間有任何距離,其限制條 件為符合該不對稱要求。 文中、、眼科透鏡(ophthalmic lens) ’’意指一隱形眼鏡、 20眼内透鏡、或類似物、或以上之組合。文中、、視遠光焦度 (distance optical power) 〃意指將戴鏡者之視遠敏度矯正 為期望程度所需折射光焦度的量。文中、、視近光焦度(_near optical power) 〃意指將戴鏡者之視近敏度矯正為期望程度所 需折射光焦度的量。本發明之透鏡亦可包含視中光焦度區段, 25或是介於視近光焦度與視遠光焦度之間的光焦度。無論如何, -4 - 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐)
200420930 B7 A7
倘若提供視中光焦度區段,此等區段最好也是不對稱的,即在 已知位在透鏡表面之一視中光焦度區段上的任—第一點的條件 下,在該表面上以該透鏡之中心為軸心相對於該第一點處於一 180度對應位置的任—第二點係—位在該表面之_視遠或視近光 5 焦度區段上的點。 該等視遠和視近光焦度區段可為任何適宜形狀。較佳來說, 該等區段是徑向區段。更佳來說,該等徑向區段呈三角形。可 使用任何數量的視近區段和視遠區段。但最好視近光焦度區段 的面積等於或小於光學區之視遠光焦度區段的面積。 10 該等視近和視遠光焦度區段可為在透鏡之背面(或稱接眼 側)上或疋透鏡之正面(或稱凸面)上。較佳來說,該等區段 皆在正面上。該等區段可為球面的或是非球面的。 圖1繪出一本發明較佳透鏡10。如圖所示,透鏡10具有光 學區16 '非光學雙凸區14及透鏡邊緣15。在光學區16内有著 15父錯的視近光焦度區段12及視遠光焦度區段π。中央區13也 疋一個視遠光焦度區域。然另一選擇是中央區13可為一視近光 焦度區域。若該透鏡係配戴在優勢眼或是視遠力佔優勢的眼睛 上,中央區13很可能會是一視遠光焦度區。 經濟部智慧財產局員工消費合作社印製 本發明之透鏡必要時可包含一使透鏡在眼上穩定的構件。在 20此技術中有許多習知穩定構件且可用於本發明之透鏡。一般而 a ’這些%疋構件非侷限性包含壓載物(ballast)、稜鏡壓載 物、厚區、薄區、透鏡表面上之突起(譬如一或多個圓突_)、 類似物、及以上之組合。 圖2繪出光學區20,其為本發明透鏡之光學區的替代實施 25例。光學區20具有交錯的視近光焦度區段22及視遠光焦度區 本紙張尺度適用中國國家標準(CNS)A4規格(21〇 x 297公爱) 200420930 A7 B7 五、發明說明(4) 段21。如圖所示,視遠區段和視近區段是同心弧。隨著從透鏡 中心徑向地向外移動,視遠區段和視近區段交錯出現。中央區 27有一處於0-180度線上方的視遠光焦度區段21及一處於該線 下方的視近光焦度區段22。亦提供過渡區23,該過渡區提供從 5視近Q 22之光焦度持績改變成視遠區21之光焦度的光焦产。 在本發明之另-實施例中,透鏡之一表面提供一具備視近及 視遠光焦度區段的多焦點表面,且該透鏡之另一表面矯正戴鏡 者的高階像差。在另一實施例中,該透鏡之正面是多焦點表面 且其背面匹配於戴鏡者的角膜形貌(亦即與戴鏡者之角膜形貌 10逆對應)。就納入透鏡配戴者角膜之一逆形貌高程圖的透鏡來 説,角膜形貌可藉由任何習知方法(其中非侷限性包含利用一 角膜形貌量測儀)判定。·就軟式隱形眼鏡製造來說,高程資料 係在一開始應用在一處於未撓曲狀態的透鏡模型。接下來考量 軟式透鏡放到眼上時的透鏡撓曲或纏捲轉換該資料。藉此在使 15用角膜形貌資料時將角膜高程以及纏捲都考量在内。然後可將 撓曲轉換後的資料映射在- CNC網袼圖案上且用以製造透鏡或 造模工具表面。 經濟部智慧財產局員工消費合作社印製 在另一實施例中,可提供柱面光焦度。在此一實施例中,透 鏡之表面疋多焦點表面且其反向表面係一複曲面。而另一實 2〇施例中,柱面光焦度可為與視遠光焦度區段和視近光焦度區段 其中之一或二者合併。 •適用於本發明之隱形眼鏡可由硬式透鏡材料或軟式透鏡材料 製成,但本發明在應用於軟式隱形眼鏡的設計和生產時可提供 特別功效。因此,最好是使用以適合製造軟式隱形眼鏡的任何 25材料製成的軟式隱形眼鏡。軟式隱形眼鏡之範例組成材料非偈 -6 _ 本纸張尺度適用中國11家標準(CNS)A4規格(21GX297公爱)"""一"" 200420930 A7
限性包含石夕_性體,含石夕_大分子單體(其中非偈限性包 含如美國專利第5, 37U47號、5, 314,議號及5, ,578號所 揭示者,以上專利以引用的方式併入本文中),水凝膠,含石夕 _水凝膠’和類似物及以上之組合。更佳來說,其表面為石夕 5氧烧,或者含有石夕氧烧官能性,其中非偈限性包含聚二甲基石夕 氧貌大分子單體、甲基丙稀酸氧伸丙基聚院基石夕氧烧、及以上 之混合物,矽酮水凝膠或一例如etafUc〇n A的水凝膠。 立二較佳透鏡組成材料為聚2_經乙基甲基丙婦酸醋聚合物, 意味著具有一介於約25,000與約80,000之間的峰值分 ⑺—分別約小於U至約小於3.5的多分散性,且== 聯的官能基共價地鍵結於其上。此材料見於美國專利申請案序 號60/363, 630號(代理人播案編號VTN 588),該案以引用的 方式併入本文中。適於構成眼内透鏡的適當材料非僞限性包含 聚曱基丙烯酸甲醋,經乙基丙稀酸甲醋,惰性清鋪,石夕明基 15 聚合物,類似物及以上之組合。 經濟部智慧財產局員工消費合作社印製 透鏡組成材料之固化可由任何習知方法進行,1中 包含熱固化'咖化、化學固化、電磁咖纽中= 及以上之組合使其固化。較佳來說,透鏡是利用紫外光或全光 譜可見光以模塑作業製得。更明確地說,適於固化透鏡材料之 2〇確切條件會取決於所選用材料及欲形成的透鏡。眼科透鏡(非 侷限性包含隱形眼鏡)之聚合化程序廣為人知。適合的程序揭 示於美國專利第5, 540, 410號中,該專利以引用的方式將其全 文併入本文中。 本么明之1¾形眼鏡可由任何習知方法形成。舉例來說,光學 25區可由鑽石車削方式製成,或是藉由以鑽石車削法加工在用以 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公爱) 200420930 B7 A 7
形成本發明透鏡之模子内的方式製成。隨後將一適當液熊杓俨 放入模子之間,接著壓縮固化該樹脂而形成本發明透鏡。另 選擇,該區可為以鑽石車削法加工在透鏡粗埋内。 5 圖式簡單說明 圖1為本發明透鏡之一實施例的平面圖。 圖2為本發明透鏡之一第二實施例的平面圖。 圖式之元件代號說明: 10 經濟部智慧財產局員工消費合作社印製 代表符號 名稱 10 本發明較佳透鏡 11 視遠光焦度區段 12 視近光焦度區段 13 中央區 14 非光學雙凸區 15 透鏡邊緣 16 光學區 20 光學區 21 視遠光焦度區段 22 視近光焦度區段 23 過渡區段 27 中央區 本紙張尺度適用中國國家標準(CNS)A4規格⑵〇 χ 297公幻
Claims (1)
- 200420930 A8 B8 C8 _D8_ 六、申請專利範圍 1. 一種眼科透鏡,其包括一具有交錯的視遠光焦度區段 及視近光焦度區段之光學區,其中該等視近光焦度區 段是不對稱的。 2. 如申請專利範圍第1項之透鏡,其中該透鏡係一隱形 5 眼鏡。 3. 如申請專利範圍第1項之透鏡,其中該光學區更包括 視中光焦度區段,其中該等視中光焦度區段是不對稱 的。 4. 如申請專利範圍第2項之隱形眼鏡,其中該等視近光 10 焦度區段和視遠光焦度區段是徑向區段。 5. 如申請專利範圍第4項之隱形眼鏡,其中該等徑向區 段大致成三角形。 6. 如申請專利範圍第2項之隱形眼鏡,其中該等視遠光 焦度區段和視近光焦度區段是同心弧。 15 7.如申請專利範圍第2項之隱形眼鏡,其更包括數量與 視遠光焦度區段大致相等的視近光焦度區段。 8. 如申請專利範圍第2項之隱形眼鏡,其更包括數量少 於視遠光焦度區段的視近光焦度區段。 經濟部智慧財產局員工消費合作社印製 9. 如申請專利範圍第2項之隱形眼鏡,其中該光學區更 20 包括一中央視遠光焦度區域。 10. 如申請專利範圍第2項之隱形眼鏡,其中該光學區更 包括一中央視近光焦度區域。 _ 11. 如申請專利範圍第2項之隱形眼鏡,其中該等視遠光 焦度區段和視近光焦度區段係在該透鏡之一第一表面 25 上,且該透鏡之一第二表面更包括矯正一透鏡配戴者 -9 - 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 200420930 A8 B8 C8 _D8_ 六、申請專利範圍 之高階像差的能力。 12. 如申請專利範圍第2項之隱形眼鏡,其中該等視遠光 焦度區段和視近光焦度區段係在該透鏡之一第一表面 上,且該透鏡之一第二表面更包括一逆對應於一透鏡 5 配戴者之角膜形貌的形貌。 13. 如申請專利範圍第2項之隱形眼鏡,其更包括柱面光 焦度。 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準(CNS)A4規格(210x297公釐)
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| Application Number | Priority Date | Filing Date | Title |
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| US10/354,401 US6986578B2 (en) | 2003-01-30 | 2003-01-30 | Multifocal ophthalmic lenses |
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| TW200420930A true TW200420930A (en) | 2004-10-16 |
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| US (1) | US6986578B2 (zh) |
| EP (2) | EP1595177A1 (zh) |
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| CA (1) | CA2514286A1 (zh) |
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2003
- 2003-01-30 US US10/354,401 patent/US6986578B2/en not_active Expired - Lifetime
-
2004
- 2004-01-22 CA CA002514286A patent/CA2514286A1/en not_active Abandoned
- 2004-01-22 WO PCT/US2004/001550 patent/WO2004070453A1/en not_active Ceased
- 2004-01-22 BR BR0407102-6A patent/BRPI0407102A/pt not_active IP Right Cessation
- 2004-01-22 CN CNA200480003082XA patent/CN1745328A/zh active Pending
- 2004-01-22 EP EP04704389A patent/EP1595177A1/en not_active Withdrawn
- 2004-01-22 AU AU2004209848A patent/AU2004209848A1/en not_active Abandoned
- 2004-01-22 EP EP06076447A patent/EP1712947A3/en not_active Withdrawn
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- 2004-01-22 KR KR1020057014051A patent/KR20050099515A/ko not_active Withdrawn
- 2004-01-29 AR ARP040100273A patent/AR042971A1/es not_active Application Discontinuation
- 2004-01-29 TW TW093101912A patent/TW200420930A/zh unknown
Also Published As
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| EP1595177A1 (en) | 2005-11-16 |
| WO2004070453A1 (en) | 2004-08-19 |
| US20040150789A1 (en) | 2004-08-05 |
| BRPI0407102A (pt) | 2006-01-24 |
| KR20050099515A (ko) | 2005-10-13 |
| JP2006516759A (ja) | 2006-07-06 |
| AR042971A1 (es) | 2005-07-13 |
| US6986578B2 (en) | 2006-01-17 |
| CN1745328A (zh) | 2006-03-08 |
| AU2004209848A1 (en) | 2004-08-19 |
| CA2514286A1 (en) | 2004-08-19 |
| EP1712947A2 (en) | 2006-10-18 |
| EP1712947A3 (en) | 2008-06-25 |
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