TWM624890U - Contact lens for myopia control - Google Patents
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Abstract
一種近視控制隱形眼鏡，其定義有一光學區及一呈環狀之遮光區，其中光學區包括有一直徑在3mm以下的中心部，其具有一恆定的屈光度P 1；一包圍在中心部外側之焦深部，其內圈直徑最小為1mm，外圈直徑最大為7mm，其屈光度係沿徑向呈連續變化，且最高的屈光度為P 2，其中滿足0.25 ≦ P 2- P 1≦ 4；以及一包圍在焦深部外側之離焦部，其內圈直徑最小為3mm，外圈直徑最大為10mm，其屈光度係沿徑向呈連續變化，且最高的屈光度為P 3，其中滿足3 ≦ P 3- P 1≦ 20。又遮光區之內圈直徑介於3mm與6mm之間，外圈直徑介於7mm與15mm之間。 A myopia control contact lens, which defines an optical zone and a ring-shaped light-shielding zone, wherein the optical zone includes a central portion with a diameter of 3 mm or less, which has a constant diopter P 1 ; a focus surrounding the outer side of the central portion In the deep part, the inner diameter of the inner circle is at least 1mm, and the outer circle diameter is at most 7mm. The diopter changes continuously along the radial direction, and the highest diopter is P 2 , which satisfies 0.25 ≦ P 2 - P 1 ≦ 4; and a surrounding The defocus part outside the depth of focus has a minimum diameter of 3mm for the inner ring and a maximum diameter of 10mm for the outer ring. Its diopter changes continuously along the radial direction, and the highest diopter is P 3 , where 3 ≦ P 3 - P 1 ≦20. In addition, the diameter of the inner ring of the shading area is between 3mm and 6mm, and the diameter of the outer ring is between 7mm and 15mm.
Description
本創作與視力矯正裝置有關，尤指一種隱形眼鏡。This creation relates to vision correction devices, especially a type of contact lens.
近視是現代文明病之一，尤其電視、電腦及3C科技產品普及之後，近視患者也隨著變多了。如第１０Ａ圖所示，眼球９的前端具有水晶體９１，後端具有視網膜９２，水晶體９１受到睫狀肌９３的牽引而改變形狀，進而調整物品成像的位置。在眼睛視物功能正常的情況下，睫狀肌９３牽引水晶體９１變成適當的形狀，使物品的影像正確地投影在視網膜９２上，據此可以看清楚物品。一般咸認造成近視的原因在於長時間盯著近物，眼球９中的睫狀肌９３持續收縮而不能回復到放鬆狀態，則水晶體９１被收縮的睫狀肌９３控制變厚，導致物品影像如第１０Ｂ圖所示地沒有投影在視網膜９２上，而是在其前方，因而看不清楚物品。Myopia is one of the diseases of modern civilization, especially after the popularization of TV, computer and 3C technology products, the number of myopia patients has also increased. As shown in Figure 10A, the front end of the
上述近視問題可藉由配戴近視眼鏡獲得改善。如第１０Ｃ圖所示，近視眼鏡的鏡片９４係為凹透鏡，可調節光線進入眼球９的角度，使物品影像被修正地投影在視網膜９２上，而能看得清楚。根據近視問題的嚴重程度，即睫狀肌９３調整水晶體９１形狀的能力高低，鏡片９４被研磨到適合的形狀，據此產生適當的屈光度（Diopter），使光線經鏡片９４形成適當的折射後，與無法正常調節的水晶體９１相配合，就能投影在視網膜９２上。The above-mentioned myopia problems can be improved by wearing myopia glasses. As shown in Figure 10C, the lens 94 of the myopia glasses is a concave lens, which can adjust the angle of the light entering the
然而習知近視眼鏡的鏡片９４僅具有一個焦點，雖然能使物品成像的中心位置落在視網膜９２上，惟該成像的周邊卻會落在視網膜９２的後方，長此以往將會導致眼球９為了正確成像而增長眼軸，又眼軸增長後反使成像的中心位置重回到視網膜９２前方，而形成一種惡性循環，造成雖然配戴眼鏡改善近視，但近視卻愈發嚴重的情形。However, the lens 94 of the conventional myopia glasses has only one focal point. Although the center position of the image of the object can fall on the
基於前述配戴眼鏡反使近視惡化的現象，醫界研發一種使用散瞳劑（阿托品，Atropine）控制近視問題的方法。細究近視成因係睫狀肌對水晶體的控制失調之故，因此對應近視的度數而往眼球中滴入適當濃度的散瞳劑，可使緊繃的睫狀肌放鬆，水晶體進而變化形狀而改善物品的成像位置。惟眼球在點入散瞳劑後，瞳孔有擴大的現象，因而通過瞳孔的光量變多，患者則會感覺刺眼，甚至影響正常生活。Based on the aforementioned phenomenon that wearing glasses can worsen myopia, the medical community has developed a method of using mydriatic (atropine, Atropine) to control myopia. The cause of myopia is that the ciliary muscle does not control the crystal. Therefore, according to the degree of myopia, an appropriate concentration of mydriatic agent is dropped into the eyeball, which can relax the tight ciliary muscle, and the crystal changes shape to improve the product. imaging location. However, after the eyeball is put into the mydriatic agent, the pupil will expand, so the amount of light passing through the pupil will increase, and the patient will feel dazzling and even affect their normal life.
有鑑於此，如何改進上述問題即為本創作所欲解決之首要課題。In view of this, how to improve the above problem is the primary issue that this creation intends to solve.
本創作之主要目的在於提供一種隱形眼鏡，其可遮蔽進入眼球的部分光線，進而改善控制近視的患者由於使用散瞳劑所致的畏光情形。此外，本創作更藉由鏡片屈光度變化的規劃設計改善眼球中的成像位置，以達到抑制眼軸增長，避免近視繼續惡化之功效。The main purpose of this creation is to provide a contact lens, which can block part of the light entering the eyeball, thereby improving the photophobia caused by the use of mydriatic agents in patients with controlled myopia. In addition, this creation improves the imaging position in the eyeball through the planning and design of the diopter change of the lens, so as to achieve the effect of inhibiting the growth of the eye axis and preventing the further deterioration of myopia.
為達前述之目的，本創作提供一種近視控制隱形眼鏡，其定義有一光學區及一呈環狀之遮光區，其中該光學區包括有： 一呈圓形且直徑在3mm以下的中心部，其具有一恆定的屈光度P 1； 一呈環狀且包圍在該中心部外側之焦深部，其內圈直徑最小為1mm，外圈直徑最大為7mm，其屈光度係沿徑向呈連續變化，且最高的屈光度為P 2，其中滿足0.25 ≦ P 2- P 1≦ 4；以及 一呈環狀且包圍在該焦深部外側之離焦部，其內圈直徑最小為3mm，外圈直徑最大為10mm，其屈光度係沿徑向呈連續變化，且最高的屈光度為P 3，其中滿足3 ≦ P 3- P 1≦ 20； 該遮光區之內圈直徑介於3mm與6mm之間，外圈直徑介於7mm與15mm之間。 In order to achieve the aforementioned purpose, the present invention provides a myopia control contact lens, which defines an optical zone and a ring-shaped light-shielding zone, wherein the optical zone includes: a circular central portion with a diameter of less than 3 mm, which It has a constant diopter P 1 ; a focal depth part that is annular and surrounds the outer side of the central part, its inner circle diameter is at least 1mm, and its outer circle diameter is at most 7mm, and its diopter changes continuously along the radial direction, and the highest The diopter is P 2 , which satisfies 0.25 ≦ P 2 - P 1 ≦ 4; and a ring-shaped defocusing portion that surrounds the outer side of the focal depth portion, the inner diameter of which is at least 3mm and the outer diameter is at most 10mm, Its diopter changes continuously along the radial direction, and the highest diopter is P 3 , which satisfies 3 ≦ P 3 - P 1 ≦ 20; The diameter of the inner circle of the shading area is between 3mm and 6mm, and the diameter of the outer circle is between 3mm and 6mm. Between 7mm and 15mm.
較佳地，該焦深部之最高屈光度與最低屈光度的差值介於0.25與4之間。Preferably, the difference between the highest diopter and the lowest diopter of the focal depth is between 0.25 and 4.
較佳地，該中心部的屈光度P 1介於1與-20之間。 Preferably, the diopter P 1 of the central portion is between 1 and -20.
於一實施例中，該遮光區的遮蔽率為20%至100%之間的任一固定數值。In one embodiment, the shading rate of the light-shielding area is any fixed value between 20% and 100%.
於另一實施例中，該遮光區的遮蔽率自內圈沿徑向往外從一最小值漸增至一最大值，其中最小值為0%，最大值介於30%至100%之間。In another embodiment, the shading rate of the light-shielding area gradually increases from a minimum value to a maximum value from the inner circle radially outward, wherein the minimum value is 0%, and the maximum value is between 30% and 100%.
於另一實施例中，該遮光區的遮蔽率自內圈沿徑向往外漸增，且該遮光區的遮蔽率會隨所接收的紫外光量而改變。In another embodiment, the shielding rate of the light-shielding region increases radially outward from the inner circle, and the shielding rate of the light-shielding region changes with the amount of received ultraviolet light.
本創作之上述目的與優點，不難從以下所選用實施例之詳細說明與附圖中獲得深入了解。The above objects and advantages of the present invention can be easily understood from the detailed description and accompanying drawings of the following selected embodiments.
請參閱第１、２圖，所示者為本創作提供之近視控制隱形眼鏡的第一實施例，其整體形成彎弧面狀，而由正面觀之，則定義有一光學區１及一遮光區２，其中該光學區１包括有一中心部１１、一焦深部１２及一離焦部１３。Please refer to Figures 1 and 2, which show the first embodiment of the myopia control contact lens provided by the present creation, which is formed in a curved surface as a whole, and when viewed from the front, an optical zone 1 and a light-shielding zone are defined 2, wherein the optical zone 1 includes a
該中心部１１形成圓形，且位於整個鏡片的中心位置。於本實施例中，該中心部１１之直徑在3mm以下，且該中心部１１之中的任一位置皆具有一恆定的屈光度P
1，其中P
1介於1與-20之間。上述屈光度（Diopter）係指透鏡或曲面鏡屈光的能力，其單位是m
-1。
The
該焦深部１２形成環狀，並包圍在該中心部１１之外側，其內圈直徑最小為1mm，外圈直徑最大為7mm。該焦深部１２的屈光度隨位置不同而不同；於本實施例中，該焦深部１２的屈光度係沿徑向呈連續變化，且由內往外漸增，最高的屈光度為P
2，且該焦深部１２之最高屈光度與最低屈光度的差值（ADD）介於0.25與4之間。更進一步地滿足 0.25 ≦ P
2- P
1≦ 4 的關係式。
The focal depth portion 12 is formed in an annular shape and surrounds the outer side of the
該離焦部１３形成環狀，並包圍在該焦深部１２之外側，其內圈直徑最小為3mm，外圈直徑最大為10mm。該離焦部１３的屈光度隨位置不同而不同；於本實施例中，該離焦部１３的屈光度係沿徑向呈連續變化，且由內往外漸增，最高的屈光度為P
3。更進一步地滿足 3 ≦ P
3- P
1≦ 20 的關係式。
The defocusing
該遮光區２形成環狀，其內圈直徑介於3mm與6mm之間，外圈直徑介於7mm與15mm之間。該遮光區２具有遮擋光線通過的功能，使外界光線只有一部分能通過鏡片而進入眼睛。根據該遮光區２的遮蔽率，可以決定有多少光線會被濾除。被該遮光區２所圍住的中間區域則因未受遮蔽而可讓光線全數通過。The
於本實施例中，無論在該遮光區２中的任何位置，其遮蔽率皆為20%至100%之間的任一固定數值。In this embodiment, no matter in any position in the light-
配戴上述本創作之隱形鏡片在眼睛上後，當近視患者使用散瞳劑進行控制近視的療程而導致瞳孔擴大的現象時，可透過該遮光區２濾除部分光線，減少進入眼睛的光線的量，就可以減緩患者因為瞳孔擴大而造成的畏光情形，據此克服使用散瞳劑的副作用。After wearing the above-mentioned contact lenses of this creation on the eyes, when the myopia patients use mydriatic agents to control myopia and cause the phenomenon of pupil dilation, part of the light can be filtered out through the
此外，配戴上述本創作之隱形鏡片在眼睛上後，如第９圖所示，由於鏡片７上該中心部、該焦深部及該離焦部等各區域的屈光度各有不同，且沿徑向呈連續漸增的變化，可使物品影像的中心焦點落在視網膜８１上，同時周邊焦點落在視網膜８１上或視網膜８１的前方，據此抑制眼球８的眼軸增長，產生避免近視繼續惡化的功效。In addition, after wearing the contact lens of the present invention on the eye, as shown in Fig. 9, the diopter of the central part, the focal depth part and the defocus part of the
請參閱第３、４圖，所示者為本創作提供之近視控制隱形眼鏡的第二實施例，其整體形成彎弧面狀，而由正面觀之，則定義有一光學區３及一遮光區４，其中該光學區３包括有一中心部３１、一焦深部３２及一離焦部３３。Please refer to Figures 3 and 4, which show the second embodiment of the myopia control contact lens provided by the present creation, which is formed in a curved surface as a whole, and when viewed from the front, an
該中心部３１形成圓形，且位於整個鏡片的中心位置。於本實施例中，該中心部３１之直徑在3mm以下，且該中心部３１之中的任一位置皆具有一恆定的屈光度P
1，其中P
1介於1與-20之間。上述屈光度（Diopter）係指透鏡或曲面鏡屈光的能力，其單位是m
-1。
The
該焦深部３２形成環狀，並包圍在該中心部３１之外側，其內圈直徑最小為1mm，外圈直徑最大為7mm。該焦深部３２的屈光度隨位置不同而不同；於本實施例中，如第５圖所示，該焦深部３２的屈光度係沿徑向呈連續變化，且由內往外漸增，最高的屈光度為P
2，且該焦深部３２之最高屈光度與最低屈光度的差值（ADD）介於0.25與4之間。更進一步地滿足 0.25 ≦ P
2- P
1≦ 4 的關係式。
The
該離焦部３３形成環狀，並包圍在該焦深部３２之外側，其內圈直徑最小為3mm，外圈直徑最大為10mm。該離焦部３３的屈光度隨位置不同而不同；於本實施例中，如第５圖所示，該離焦部３３的屈光度係沿徑向呈連續變化，且由內往外漸增，最高的屈光度為P
3。更進一步地滿足 3 ≦ P
3- P
1≦ 20 的關係式。
The defocusing
該遮光區４形成環狀，其內圈直徑介於3mm與6mm之間，外圈直徑介於7mm與15mm之間。該遮光區４具有遮擋光線通過的功能，使外界光線只有一部分能通過鏡片而進入眼睛。根據該遮光區４的遮蔽率，可以決定有多少光線會被濾除。被該遮光區４所圍住的中間區域則因未受遮蔽而可讓光線全數通過。The
於本實施例中，如第５圖所示，該遮光區４的遮蔽率係沿徑向呈連續變化，且由內往外從一最小值漸增至一最大值，其中最小值為0%，最大值介於30%至100%之間。In this embodiment, as shown in FIG. 5, the shading rate of the
請參閱第６、７Ａ、７Ｂ圖，所示者為本創作提供之近視控制隱形眼鏡的第三實施例，其整體形成彎弧面狀，而由正面觀之，則定義有一光學區５及一遮光區６，其中該光學區５包括有一中心部５１、一焦深部５２及一離焦部５３。Please refer to Figures 6, 7A, and 7B, which show the third embodiment of the myopia control contact lens provided by the present creation, which is in the shape of a curved surface as a whole, and when viewed from the front, an
該中心部５１形成圓形，且位於整個鏡片的中心位置。於本實施例中，該中心部５１之直徑在3mm以下，且該中心部５１之中的任一位置皆具有一恆定的屈光度P
1，其中P
1介於1與-20之間。上述屈光度（Diopter）係指透鏡或曲面鏡屈光的能力，其單位是m
-1。
The
該焦深部５２形成環狀，並包圍在該中心部５１之外側，其內圈直徑最小為1mm，外圈直徑最大為7mm。該焦深部５２的屈光度隨位置不同而不同；於本實施例中，如第８圖所示，該焦深部５２的屈光度係沿徑向呈連續變化，且由內往外漸增，最高的屈光度為P
2，且該焦深部５２之最高屈光度與最低屈光度的差值（ADD）介於0.25與4之間。更進一步地滿足 0.25 ≦ P
2- P
1≦ 4 的關係式。
The
該離焦部５３形成環狀，並包圍在該焦深部５２之外側，其內圈直徑最小為3mm，外圈直徑最大為10mm。該離焦部５３的屈光度隨位置不同而不同；於本實施例中，如第８圖所示，該離焦部５３的屈光度係沿徑向呈連續變化，且由內往外漸增，最高的屈光度為P
3。更進一步地滿足 3 ≦ P
3- P
1≦ 20 的關係式。
The defocusing
該遮光區６形成環狀，其內圈直徑介於3mm與6mm之間，外圈直徑介於7mm與15mm之間。該遮光區６具有遮擋光線通過的功能，使外界光線只有一部分能通過鏡片而進入眼睛。根據該遮光區６的遮蔽率，可以決定有多少光線會被濾除。被該遮光區６所圍住的中間區域則因未受遮蔽而可讓光線全數通過。The
於本實施例中，如第８圖所示，該遮光區６的遮蔽率係沿徑向呈連續變化，且由內往外漸增。此外，該遮光區６的遮蔽率會隨所接收的紫外光量而改變，在外界的紫外光較弱時，該遮光區６的遮蔽率會如第７Ａ圖所示地變為較低的數值，進而濾除較少的光線；而在外界的紫外光較強時，該遮光區６的遮蔽率會如第７Ｂ圖所示地變為較高的數值，進而濾除較多的光線。In this embodiment, as shown in FIG. 8 , the shading rate of the
惟以上實施例之揭示僅用以說明本創作，並非用以限制本創作，舉凡等效元件之置換仍應隸屬本創作之範疇。However, the disclosure of the above embodiments is only used to illustrate the present creation, not to limit the present creation, and the replacement of equivalent elements should still belong to the scope of the present creation.
綜上所述，可使熟知本領域技術者明瞭本創作確可達成前述目的，實已符合專利法之規定，爰依法提出申請。To sum up, those skilled in the art can understand that this creation can indeed achieve the above-mentioned purpose, and it actually complies with the provisions of the Patent Law, and an application can be filed in accordance with the law.
１:光學區 １１:中心部 １２:焦深部 １３:離焦部 ２:遮光區 ３:光學區 ３１:中心部 ３２:焦深部 ３３:離焦部 ４:遮光區 ５:光學區 ５１:中心部 ５２:焦深部 ５３:離焦部 ６:遮光區 ７:鏡片 ８:眼球 ８１:視網膜 ９:眼球 ９１:水晶體 ９２:視網膜 ９３:睫狀肌 ９４:鏡片 1: Optical zone １１: Center part 12: Depth of focus １３: Defocus part 2: Shading area 3: Optical zone ３１: Center part 32: Depth of focus 33: Defocus part 4: Shading area 5: Optical zone 51: Center part 52: Depth of focus 53: Defocus part 6: Shading area 7: Lens 8: Eyeball 81: Retina 9: Eyeball 91: Crystal 92: Retina 93: ciliary muscle 94: Lens
第１、２圖為本創作第一實施例之平面示意圖； 第３、４圖為本創作第二實施例之平面示意圖； 第５圖為本創作第二實施例屈光率及光遮蔽率之曲線圖； 第６、７Ａ、７Ｂ圖為本創作第三實施例之平面示意圖； 第８圖為本創作第三實施例屈光率及光遮蔽率之曲線圖； 第９圖為本創作之使用狀態示意圖； 第１０Ａ圖為物品投影於正常眼球上的示意圖； 第１０Ｂ圖為物品投影於近視眼球上的示意圖； 第１０Ｃ圖為配戴習知眼鏡矯正視力之下，物品投影於眼球上的示意圖。 Figures 1 and 2 are schematic plan views of the first embodiment of the creation; Figures 3 and 4 are schematic plan views of the second embodiment of the creation; Figure 5 is a graph of the refractive index and light shielding rate of the second embodiment of the creation; Figures 6, 7A and 7B are schematic plan views of the third embodiment of the creation; Figure 8 is a graph of the refractive index and light shielding ratio of the third embodiment of the creation; Figure 9 is a schematic diagram of the state of use of the creation; Figure 10A is a schematic diagram of an item projected on a normal eyeball; Figure 10B is a schematic diagram of the object projected on the myopic eyeball; Figure 10C is a schematic diagram of the object projected on the eyeball under the correction of vision with conventional glasses.
2:遮光區 2: Shading area
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| TW110214385U TWM624890U (en) | 2021-12-02 | 2021-12-02 | Contact lens for myopia control |
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| TW110214385U TWM624890U (en) | 2021-12-02 | 2021-12-02 | Contact lens for myopia control |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI783809B (en) * | 2021-12-02 | 2022-11-11 | 上允生技股份有限公司 | Myopia Control Contact Lenses |
| TWI827339B (en) * | 2022-11-04 | 2023-12-21 | 黃上人 | Myopia control contact lenses for children |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI783809B (en) * | 2021-12-02 | 2022-11-11 | 上允生技股份有限公司 | Myopia Control Contact Lenses |
| TWI827339B (en) * | 2022-11-04 | 2023-12-21 | 黃上人 | Myopia control contact lenses for children |
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