TWI595286B - Continuous zoom contact lenses - Google Patents
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- TWI595286B TWI595286B TW105117956A TW105117956A TWI595286B TW I595286 B TWI595286 B TW I595286B TW 105117956 A TW105117956 A TW 105117956A TW 105117956 A TW105117956 A TW 105117956A TW I595286 B TWI595286 B TW I595286B
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Description
本發明是有關於一種眼鏡,特別是指一種隱形眼鏡。 The present invention relates to a pair of glasses, and more particularly to a contact lens.
參閱圖1,近視患者的眼睛9對於遠方景物是成像於視網膜91前,所以無法在視網膜91上形成清晰的影像。然而,參閱圖2是該近視患者的眼睛9配戴一為凹透鏡的近視隱形眼鏡8時,遠方景物經由該近視隱形眼鏡8矯正調節而成像於視網膜91上。 Referring to Fig. 1, the eye 9 of the myopic patient is imaged in front of the retina 91 for a distant scene, so that a clear image cannot be formed on the retina 91. However, referring to FIG. 2, when the eye 9 of the myopic patient wears a myopic contact lens 8 which is a concave lens, the distant scene is corrected on the retina 91 via the correction of the myopia contact lens 8.
上述近視患者在確認近視度數進行配鏡時,是採取遠距離測量找出能矯正近視患者的視力的近視隱形眼鏡8,例如所量測配置出的近視隱形眼鏡8是可讓近視患者能以矯正後的視力1.0的清晰度,看清楚五公尺遠處的景物。 When the above-mentioned myopia patient confirms the degree of myopia, the distance vision measurement is used to find the myopia contact lens 8 which can correct the vision of the myopic patient. For example, the measured myopia contact lens 8 can make the myopia patient correct. After the visual acuity of 1.0, you can see the scenery at a distance of five meters.
然而,近視患者大多時間是配戴著上述遠距測量配置出來的近視隱形眼鏡8,長時間近距離觀視平板、手機、電腦等電子用品的螢幕,或是長時間近距離閱讀書籍報章雜誌,實際上是讓配戴近視隱形眼鏡8的眼睛9以上述遠距矯正後的視覺成像來看近距離畫面,從而在視網膜周邊範圍產生遠視性離焦(Hyperopia Defocus),這樣一來,眼睛9為了正確對焦產生清晰的視覺影像,眼睛9的睫狀肌92須持續的收縮緊繃帶動水晶體93聚焦,會造成睫狀肌92痙攣暫時失去放鬆的能力,從而形成假性近視。如果長期維持此狀態,睫狀肌92的痙攣還可能刺激眼睛9的眼軸的拉長,從而形成無法逆轉的真性近視,造成近視度數的加深。 However, myopia patients spend most of their time wearing myopia contact lenses 8 configured with the above-mentioned remote measurement, watching the screens of electronic devices such as tablets, mobile phones, computers, etc. for a long time, or reading books and magazines for a long time. In fact, the eye 9 wearing the myopic contact lens 8 is visually imaged at the distance correction to see a close-up picture, thereby producing hyperopic defocus in the periphery of the retina (Hyperopia) Defocus), in this way, the eye 9 produces a clear visual image for correct focus, and the ciliary muscle 92 of the eye 9 must continue to shrink and tighten the liquid crystal 93 to focus, which will cause the ciliary muscle 92 痉挛 to temporarily lose the ability to relax, thereby Forming pseudomyopia. If this state is maintained for a long period of time, the iliac crest of the ciliary muscle 92 may also stimulate the elongation of the eye axis of the eye 9, thereby forming an irreversible true myopia, resulting in a deepening of the degree of myopia.
參閱圖3及圖4,為了解決上述單焦點隱形眼鏡看遠看近的問題,則有具有複數具有不同屈光鏡度的焦點區域71、72、的多焦點隱形眼鏡7問世,用以實現可看近又可看遠的功效。然而,多焦點隱形眼鏡7最大的問題在於,配戴者在看遠看近變換注視於多焦點隱形眼鏡7的不同焦點區域71、72時,為了達成能看近看遠瞬間轉換,因此不同焦點區域71、72間的屈光鏡度是急遽跳動變化,有些配戴者的眼睛9無法適應上述屈光鏡度急遽變化,則會造成成像跳像及模糊情形產生,也會有分光現象,造成視覺對比度下降,長期配戴使用下來配戴者容易有暈眩或適應不良等不良反應。 Referring to FIG. 3 and FIG. 4, in order to solve the problem of looking at the above-mentioned single-focus contact lens, a multi-focus contact lens 7 having a plurality of focal regions 71 and 72 having different refractive powers is available for realizing a near view. You can also see the effect of far. However, the biggest problem with the multifocal contact lens 7 is that the wearer looks at the different focus areas 71, 72 of the multifocal contact lens 7 when looking at the distance, in order to achieve a near-distance transition, so different focus The degree of diopter between the regions 71 and 72 is a sudden change in jitter. Some wearer's eyes 9 cannot adapt to the above-mentioned violent changes in the diopter, which may cause imaging jumps and blurring, and also have a spectroscopic phenomenon, resulting in a decrease in visual contrast. Long-term wear and use of the wearer is prone to dizziness or maladaptation.
因此,本發明之目的,即在提供一種連續變焦隱形眼鏡,其能矯正眼球屈光異常,並修正視網膜周邊範圍的成像焦點位置。 Accordingly, it is an object of the present invention to provide a continuous zoom contact lens that corrects for ocular refractive abnormalities and corrects the imaging focus position of the periphery of the retina.
於是,本發明連續變焦隱形眼鏡,包含:一中心光學區,及一周邊區。 Thus, the continuous zoom contact lens of the present invention comprises: a central optical zone, and a peripheral zone.
該中心光學區包括一第一光學區及一第二光學區,該第一光學區是以該連續變焦隱形眼鏡的一中心光軸為圓心且半徑為1.5±1.0mm所圍繞構成的圓形區域。該第二光學區是自該第一光學區的周緣沿徑向向外延伸至該周邊區。 The central optical zone includes a first optical zone and a second optical zone, the first optical zone is a circular area surrounded by a central optical axis of the continuous zoom contact lens and having a radius of 1.5±1.0 mm. . The second optical zone extends radially outward from the periphery of the first optical zone to the peripheral zone.
該連續變焦隱形眼鏡的屈光鏡度沿徑向連續改變,屈光鏡度之平均變化率在該第一光學區為0.25D/mm以下,在該第二光學區為0.25D/mm以上。 The refractive power of the continuous zoom contact lens is continuously changed in the radial direction, and the average rate of change of the refractive power is 0.25 D/mm or less in the first optical zone and 0.25 D/mm or more in the second optical zone.
本發明之功效在於:透過沿徑向連續地改變該第一光學區及該第二光學區的屈光鏡度,使該連續變焦隱形眼鏡能矯正眼球屈光異常,且解決習知多焦點隱形眼鏡有成像跳像或分光現象而使得配戴者有暈眩或適應不良等不良反應的問題,並同時修正視網膜周邊範圍成像的焦點位置,以對眼睛能達到有效舒緩壓力。 The effect of the invention is that the continuous zoom contact lens can correct the refractive error of the eyeball by continuously changing the refractive power of the first optical zone and the second optical zone in the radial direction, and solve the problem that the conventional multifocal contact lens has imaging The phenomenon of jumping or splitting causes the wearer to have problems such as dizziness or maladaptation, and at the same time corrects the focus position of the peripheral area of the retina to effectively relieve the pressure on the eyes.
7‧‧‧多焦點隱形眼鏡 7‧‧‧Multifocal contact lenses
93‧‧‧水晶體 93‧‧‧Cell crystal
71‧‧‧焦點區域 71‧‧‧Focus area
94‧‧‧眼角膜 94‧‧‧ cornea
72‧‧‧焦點區域 72‧‧‧Focus area
1‧‧‧連續變焦隱形眼鏡 1‧‧‧Continuous zoom contact lenses
8‧‧‧近視隱形眼鏡 8‧‧‧Myopia contact lenses
11‧‧‧中心光學區 11‧‧‧Center Optical Zone
9‧‧‧眼睛 9‧‧‧ eyes
111‧‧‧第一光學區 111‧‧‧First optical zone
91‧‧‧視網膜 91‧‧‧Retina
112‧‧‧第二光學區 112‧‧‧Second optical zone
911‧‧‧黃斑中心凹 911‧‧‧ Macular fovea
12‧‧‧周邊區 12‧‧‧The surrounding area
912‧‧‧周邊範圍 912‧‧‧around range
L‧‧‧中心光軸 L‧‧‧ central optical axis
92‧‧‧睫狀肌 92‧‧‧Ciliary muscle
本發明之其他的特徵及功效,將於參照圖式的實施方式中清楚地呈現,其中:圖1是一示意圖,說明一近視患者的眼睛的成像態樣; 圖2是一示意圖,說明該近視患者的眼睛配戴一近視隱形眼鏡鏡片後的成像態樣;圖3是一平面示意圖,說明習知一多焦點隱形眼鏡的分區態樣;圖4是一示意圖,說明眼睛在配戴該多焦點隱形眼鏡時使用各區進行不同距離的對焦成像;圖5是一平面示意圖,說明本發明連續變焦隱形眼鏡的分區態樣;圖6是一側視示意圖,說明一配戴者在配戴本發明連續變焦隱形眼鏡時,該連續變焦隱形眼鏡的各區對焦成像態樣;圖7是本發明連續變焦隱形眼鏡之實施例1的一屈光鏡度分布圖;圖8是本發明連續變焦隱形眼鏡之實施例2的一屈光鏡度分布圖;及圖9是本發明連續變焦隱形眼鏡之實施例3的一屈光鏡度分布圖。 Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic diagram illustrating an imaging aspect of a myopic patient's eye; 2 is a schematic view showing an imaging state of the myopic patient's eye after wearing a myopic contact lens; FIG. 3 is a plan view showing a partitioned state of a conventional multifocal contact lens; FIG. 4 is a schematic view , indicating that the eye uses the respective regions for focusing imaging at different distances when wearing the multifocal contact lens; FIG. 5 is a schematic plan view showing the partitioning pattern of the continuous zoom contact lens of the present invention; FIG. 6 is a side view showing When a wearer wears the continuous zoom contact lens of the present invention, the regions of the continuous zoom contact lens are in a focused imaging state; FIG. 7 is a refractive index distribution diagram of Embodiment 1 of the continuous zoom contact lens of the present invention; Is a refractive index profile of Embodiment 2 of the continuously zoom contact lens of the present invention; and FIG. 9 is a refracting power distribution diagram of Embodiment 3 of the continuous zoom contact lens of the present invention.
本發明係一種連續變焦隱形眼鏡,透過沿徑向連續地改變其屈光鏡度,使之能矯正眼球屈光異常,且解決習知多焦點鏡片有成像跳像或分光現象而使得配戴者有暈眩或適應不良等不良 反應的問題,並同時修正視網膜周邊範圍成像的焦點位置,以對眼睛能達到有效舒緩壓力。 The invention relates to a continuous zoom contact lens, which can correct the refractive error of the eyeball by continuously changing the refractive index in the radial direction, and solve the problem that the conventional multifocal lens has an image jumping image or a spectroscopic phenomenon, so that the wearer has dizziness Or maladaptive The problem of the reaction, and at the same time correct the focus position of the imaging of the periphery of the retina, so as to effectively relieve the pressure on the eye.
眼睛的視力中心比周邊視力更為敏感精確,在視網膜中央附近有一個直徑約為0.2mm的小凹陷,稱為黃斑中心凹(又稱黃斑部),其為視覺最敏銳的部位,也處於人眼的視覺中心。圍繞黃斑部的周邊區域,其視覺敏銳度顯著降低,當離開視軸5度角時,分辨能力便降至黃斑部中心值的三分之一。但由於眼角膜除了中央部附近的範圍是球面形之外,其餘的周邊區域則非為球面形,若隱形眼鏡的屈光率皆為一致時,當眼睛看遠處時,光線如同平行光經水晶體折射後投射入黃斑中心凹處,睫狀肌放鬆下長時間看遠方,並不會造成眼睛疲勞,相反的,如果長時間看近距離的物件,睫狀肌用力下,雖然近物清晰,但導致位於視網膜周邊範圍的成像焦點不落在視網膜上,形成遠視性離焦,此時眼睛為了獲得較佳的成像,會迫使睫狀肌調整水晶體的曲率,增加負擔。因此,本發明係透過沿徑向連續地改變隱形眼鏡的屈光鏡度,使之能矯正眼球屈光異常,且解決習知多焦點隱形眼鏡成像跳像或分光現象而使得配戴者有暈眩或適應不良等不良反應的問題,並同時修正視網膜周邊範圍成像的焦點。 The center of vision of the eye is more sensitive and precise than the peripheral vision. There is a small depression about 0.2mm in diameter near the center of the retina, called the macular fovea (also known as the macula), which is the most sensitive part of the vision. The visual center of the eye. The visual acuity of the surrounding area around the macula is significantly reduced. When the angle of view is 5 degrees away from the visual axis, the resolution is reduced to one-third of the central value of the macula. However, since the cornea in the vicinity of the central portion of the cornea is spherical, the remaining peripheral regions are not spherical. If the refractive power of the contact lenses is the same, when the eyes are far away, the light is like a parallel light. After the crystal is refracted, it is projected into the fovea of the macula. The ciliary muscle relaxes for a long time and looks far away. It does not cause eye fatigue. On the contrary, if you look at close objects for a long time, the ciliary muscles force, although the close objects are clear, However, the imaging focus located in the periphery of the retina does not fall on the retina, forming a far-sighted defocus. At this time, in order to obtain better imaging, the eye forces the ciliary muscle to adjust the curvature of the crystal and increase the burden. Therefore, the present invention makes it possible to correct the refractive error of the eyeball by continuously changing the refractive index of the contact lens in the radial direction, and to solve the imaging phenomenon or spectroscopic phenomenon of the conventional multifocal contact lens, so that the wearer is dizzy or adapted. Problems such as poor side effects, and at the same time correcting the focus of imaging around the retina.
參閱圖5及圖6,本發明連續變焦隱形眼鏡1,包含一中心光軸L、一中心光學區11,及一由該中心光學區11朝外徑向延伸 的周邊區12。其中,該中心光學區11是提供矯正視力的可視區,於結構設計上具有屈光鏡度,以供視力的矯正,而該周邊區12的結構設計是用以增加該連續變焦隱形眼鏡1適當的配戴面積,讓該連續變焦隱形眼鏡1能穩定地貼合於一配戴者的眼睛9上的眼角膜94,由於該周邊區12為非主要視覺區,因此該周邊區12可能設計不具有視覺清晰效果。 Referring to Figures 5 and 6, the continuous zoom contact lens 1 of the present invention comprises a central optical axis L, a central optical zone 11, and a radially outward extending direction from the central optical zone 11. The surrounding area is 12. Wherein, the central optical zone 11 is a visible area for providing corrective vision, and has a refractive power in the structural design for correcting the vision, and the structural design of the peripheral zone 12 is for increasing the proper matching of the continuous zoom contact lens 1. The wearing area allows the continuous zoom contact lens 1 to stably conform to the cornea 94 on the wearer's eye 9. Since the peripheral zone 12 is a non-primary visual zone, the peripheral zone 12 may be designed without vision. Clear effect.
該中心光學區11包括一第一光學區111,及一第二光學區112。該第一光學區111是以該連續變焦隱形眼鏡1的該中心光軸L為圓心,並以半徑為1.5±1.0mm所圍繞構成的圓形區域。該第一光學區111的基弧(base curve,BC)曲率半徑介於8.0至9.0mm,圓錐常數(K)大於0,且屈光鏡度沿著徑向方向向外連續地變化,並以該中心光軸L為軸對稱中心,徑向屈光鏡度其平均變化率為0.25D/mm以下,較佳地,其平均變化率是小於0.125D/mm。當配戴者的該眼睛9在配戴該連續變焦隱形眼鏡1並注視遠方時,遠方景物透過該第一光學區111折射矯正而成像在視網膜91的黃斑中心凹911上。該第一光學區111的起始屈光鏡度是依據配戴者的需要進行調整,如配戴者為近視患者,則以適合該患者的屈光鏡度作為起始值。 The central optical zone 11 includes a first optical zone 111 and a second optical zone 112. The first optical zone 111 is a circular area surrounded by the central optical axis L of the continuous zoom contact lens 1 and surrounded by a radius of 1.5 ± 1.0 mm. The base curve (BC) of the first optical zone 111 has a radius of curvature of 8.0 to 9.0 mm, a conic constant (K) greater than 0, and the refractive power continuously changes outward in the radial direction, and the center is The optical axis L is an axisymmetric center, and the average refractive index of the radial refractive power is 0.25 D/mm or less. Preferably, the average rate of change is less than 0.125 D/mm. When the wearer's eye 9 is wearing the continuous zoom contact lens 1 and looking into the distance, the distant scene is refraction corrected by the first optical zone 111 and imaged on the macula fove 911 of the retina 91. The initial refractive power of the first optical zone 111 is adjusted according to the needs of the wearer. If the wearer is a myopic patient, the refractive power suitable for the patient is used as a starting value.
該第二光學區112是自該第一光學區111向外延伸,且外緣與該連續變焦隱形眼鏡1的該中心光軸L距離小於半徑4mm, 較佳地為2.5至3.5mm,不過,該第二光學區112與該中心光軸L的距離縱算大於4mm,仍然不會影響整個可視範圍作用,即整個該中心光學區11的可視區並不會受到影響,故,上述該第二光學區112與該中心光軸L的距離小於半徑4mm並不是限定絕對要小於,只是在人類眼睛可視區範圍一般不會超過半徑4mm,若該連續變焦隱形眼鏡1在可視區範圍外的部分設計具有屈光鏡度,顯然只會徒增加工成本。該第二光學區112的屈光鏡度沿著徑向方向向外連續地變化,並以該中心光軸L為軸對稱中心,其徑向屈光鏡度的平均變化率為0.25D/mm以上,較佳地,其徑向屈光鏡度的平均變化率是大於0.5D/mm。該連續變焦隱形眼鏡1透過提高該第二光學區112的屈光鏡度,也就是該第二光學區112的屈光鏡度是大於該第一光學區111的屈光鏡度,並讓該第二光學區112的屈光鏡度的平均變化率大於該第一光學區111的屈光鏡度的平均變化率,使景物經由該第二光學區112折射矯正的成像焦點是落在視網膜91的周邊範圍912之前,產生近視性離焦,藉此讓視近物時睫狀肌92無須過度用力,使水晶體93的曲率變小調整對焦,對眼睛能達到有效舒緩壓力。值得一提的是,上述0.25D/mm以下及0.25D/mm以上的數值範圍界定,也就是分別意指小於等於(不大於)0.25D/mm及大於等於(不小於)0.25D/mm。 The second optical zone 112 extends outward from the first optical zone 111, and the outer edge is spaced from the central optical axis L of the continuous zoom contact lens 1 by a distance of less than 4 mm. Preferably, it is 2.5 to 3.5 mm. However, the distance between the second optical zone 112 and the central optical axis L is greater than 4 mm, and still does not affect the entire visible range, that is, the entire visible area of the central optical zone 11 and It is not affected. Therefore, the distance between the second optical zone 112 and the central optical axis L is less than the radius of 4 mm, and is not limited to be absolutely smaller, but generally does not exceed the radius of 4 mm in the visible region of the human eye, if the continuous zoom The design of the contact lens 1 outside the viewable area has a refractive power, which obviously only increases the labor cost. The refractive power of the second optical zone 112 continuously changes outward in the radial direction, and the central optical axis L is an axisymmetric center, and the average rate of change of the radial refractive power is 0.25 D/mm or more, preferably. Ground, the average rate of change of radial diopter is greater than 0.5 D/mm. The continuous zoom contact lens 1 transmits the refractive power of the second optical zone 112, that is, the refractive power of the second optical zone 112 is greater than the refractive power of the first optical zone 111, and the second optical zone 112 is The average rate of change of the diopter is greater than the average rate of change of the refracting illuminance of the first optical zone 111, such that the imaged focus corrected by the refraction of the subject via the second optical zone 112 falls before the peripheral extent 912 of the retina 91, producing a near vision The coke, so that the ciliary muscle 92 does not need to exert excessive force when the object is close to the object, so that the curvature of the crystal lens 93 becomes smaller to adjust the focus, and the eye can effectively relieve the pressure. It is worth mentioning that the above numerical ranges of 0.25 D/mm or less and 0.25 D/mm or more are defined, that is, respectively mean less than or equal to (not more than) 0.25 D/mm and greater than or equal to (not less than) 0.25 D/mm.
於實務設計上,雖然前述該第一光學區111的屈光鏡度平均變化率不大於0.25D/mm,是不限於該第一光學區111的範圍內必定要呈漸增狀況,也可遞增後遞減的設計,只需控制屈光鏡度的平均變化率不大於0.25D/mm即可,同理,該第二光學區112亦然。不過,對於製造技術難易度以及避免產生跳像的考量上,較佳的實施上,該第一光學區111的屈光鏡度由該中心光軸L為起點將呈漸增趨勢,該第二光學區112的屈光鏡度延續該第一光學區111的屈光鏡度呈漸增趨勢,更佳地,第一光學區111的屈光鏡度漸增率低於該第二光學區112的屈光鏡度漸增率。 In the practical design, although the average refractive index change rate of the first optical zone 111 is not more than 0.25 D/mm, it is not limited to the range of the first optical zone 111, and must be gradually increased, and may be incremented and then decremented. The design only needs to control the average rate of change of the refractive power to be no more than 0.25 D/mm. Similarly, the second optical zone 112 is also the same. However, in the preferred implementation, the refractive index of the first optical zone 111 will gradually increase from the central optical axis L as a starting point, and the second optical zone is considered. The diopter of 112 continues the grading of the first optical zone 111. More preferably, the gradation of the first optical zone 111 is lower than the gradual increase of the diopter of the second optical zone 112.
該周邊區12自該第二光學區112的外緣向外延伸,且該周邊區12的外緣與該連續變焦隱形眼鏡1的該中心光軸L距離不大於半徑8.0mm。 The peripheral region 12 extends outwardly from the outer edge of the second optical zone 112, and the outer edge of the peripheral zone 12 is at a distance no greater than a radius of 8.0 mm from the central optical axis L of the continuous zoom contact lens 1.
透過確立該第一光學區111的起始屈光鏡度,以及該連續變焦隱形眼鏡1的該第一光學區111及該第二光學區112兩者的屈光鏡度變化率,即能依據現有的製造方法製造出本發明之連續變焦隱形眼鏡1。現有的製造方法可例舉如:模壓成形、旋模成形、車削成形...等方法。有關用於本發明連續變焦隱形眼鏡1的製作方法並沒有任何限制,而材料亦沒有限制,材料可以例舉但不限於甲基丙烯酸羥乙酯(2-Hydroxyethyl methacrylate,HEMA)與甲基丙烯酸(Methacrylic acid,MAA)之共聚物、親水性水膠 (Hygrogel)、疏水性矽水膠(Silicone hydrogel)、硬式高透氧矽氟聚合物...等。 By establishing the initial refractive power of the first optical zone 111 and the refractive index change rate of both the first optical zone 111 and the second optical zone 112 of the continuous zoom contact lens 1, the existing manufacturing method can be used. The continuous zoom contact lens 1 of the present invention is manufactured. The conventional manufacturing method may, for example, be a method such as press molding, rotary molding, or turning forming. There is no limitation on the manufacturing method of the continuous zoom contact lens 1 used in the present invention, and the material is not limited. The material may be exemplified by, but not limited to, 2-Hydroxyethyl methacrylate (HEMA) and methacrylic acid ( Methacrylic acid, MAA) copolymer, hydrophilic water gel (Hygrogel), hydrophobic water gel (Silicone hydrogel), hard high oxygen oxyfluoride fluoropolymer, etc.
當配戴者的眼睛9在配戴該連續變焦隱形眼鏡1並注視近物時,鄰近該中心光軸L的景物經由該第一光學區111折射矯正成像在視網膜91的黃斑中心凹911上,距離該中心光軸L較遠範圍的景物則經由該連續變焦隱形眼鏡1的該第二光學區112折射矯正成像於視網膜91的周邊範圍912,因為該第二光學區112具有大於該第一光學區111的屈光鏡度設計,使得景物經由該第二光學區112的成像是落在視網膜91的周邊範圍912前,形成近視性離焦,藉此讓睫狀肌92無須過度用力,使水晶體93的曲率變小調整對焦,對眼睛9能達到有效舒緩壓力。 When the wearer's eye 9 is wearing the continuous zoom contact lens 1 and looking at the close object, the scene adjacent to the central optical axis L is refraction corrected and imaged on the macula fove 911 of the retina 91 via the first optical zone 111, A scene that is farther from the central optical axis L is refracted and corrected to the peripheral extent 912 of the retina 91 via the second optical zone 112 of the continuous zoom contact lens 1 because the second optical zone 112 has a larger than the first optical The diopter design of the region 111 is such that imaging of the scene through the second optical zone 112 falls in front of the peripheral extent 912 of the retina 91, forming a near-sighted defocus, thereby allowing the ciliary muscle 92 to be over-stressed without the need for excessive force. The curvature is reduced to adjust the focus, and the eye 9 can achieve effective relief pressure.
當該連續變焦隱形眼鏡1滿足該第二光學區112的屈光鏡度沿徑向向外以正值增加,且使該第二光學區12的周緣處的屈光鏡度與該中心光軸L處的屈光鏡度的差值不大於1.5D的條件下,當視近物時視網膜91上的成像是足夠清晰,且更能有效減少睫狀肌92緊繃收縮的情形產生,以降低長時間近距離注視所造成的疲勞,能更為舒緩眼睛9的負擔。 When the continuous zoom contact lens 1 satisfies the refractive power of the second optical zone 112, it increases in a radial direction with a positive value, and the refractive power at the periphery of the second optical zone 12 and the diopter at the central optical axis L Under the condition that the difference of degrees is not more than 1.5D, the imaging on the retina 91 is clear enough when the object is close, and it is more effective to reduce the tight contraction of the ciliary muscle 92 to reduce the long-term close-up gaze. The fatigue caused can relieve the burden on the eyes 9.
透過調整該第二光學區112的屈光鏡度變化,還可以有效減緩兒童近視的增加。其原因在於兒童的眼睛多為遠視眼,而在發育過程中眼軸會不斷的增長,逐漸朝一般視力發展。在上述眼軸 增長的過程中,若使用習知單焦點鏡片進行近視矯正且長時間近距離觀看景物時,容易造成兒童眼睛的眼軸過度拉長,從而造成近視眼。因此,調整該連續變焦隱形眼鏡1的該第二光學區112的屈光鏡度變化態樣能有效改善前述問題,也就是將該第二光學區112的屈光鏡度沿徑向向外以正值增加,並使該第二光學區112的屈光鏡度之平均變化率大於0.75D/mm,可讓兒童在配戴矯正視力使用時能有效減緩近視度數增加。 By adjusting the change in the refractive power of the second optical zone 112, the increase in myopia in children can also be effectively alleviated. The reason is that children's eyes are mostly hyperopia, and the axis of the eye will continue to grow during development and gradually develop toward general vision. In the above eye axis In the process of growth, if a conventional single-focus lens is used for myopia correction and the scene is viewed at a close distance for a long time, the eye axis of the child's eye is likely to be excessively elongated, thereby causing myopia. Therefore, adjusting the diopter change pattern of the second optical zone 112 of the continuous zoom contact lens 1 can effectively improve the aforementioned problem, that is, the refracting degree of the second optical zone 112 is increased radially outward by a positive value. The average change rate of the refractive power of the second optical zone 112 is greater than 0.75 D/mm, which can effectively slow the increase of myopia when the child wears the corrected vision.
透過調整該連續變焦隱形眼鏡1的該第一光學區111的起始屈光鏡度,以及調整該連續變焦隱形眼鏡1整體的屈光鏡度變化,使其適合供老花眼患者配戴。其調整方式為讓該第一光學區111具有零或負值的屈光鏡度,以適應配戴者的正視或近視度數,供其觀看遠距離景物,並且將該第二光學區112的屈光鏡度沿徑向向外以正值增加,增加至配戴者的遠視度數,以讓其能供配戴者觀看中距離及近距離的景物。 By adjusting the initial refractive power of the first optical zone 111 of the continuous zoom contact lens 1 and adjusting the diopter change of the continuous zoom contact lens 1 as a whole, it is suitable for wearing by a presbyopic patient. The adjustment is such that the first optical zone 111 has a zero or negative refractive power to accommodate the wearer's front or near vision for viewing a distant scene and the refracting edge of the second optical zone 112 The radial outward increases with a positive value and increases to the wearer's farsightedness so that the wearer can view the mid-range and close-range scenes.
以下將例示出本發明的較佳實施例,然而,在本發明被較佳實施例詳細描述之前,應當注意在以下的說明內容中,類似的元件是以相同的編號來表示。 DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description of the preferred embodiments of the invention, reference should be made to the
[實施例1][Example 1]
參閱圖5、圖6及圖7,本發明實施例1的連續變焦隱形眼鏡1適合用於紓緩眼睛9近距離注視的負擔的舒壓鏡片設計,該連 續變焦隱形眼鏡1以HEMA水膠經UV光照射聚合模壓成形,且包含以該連續變焦隱形眼鏡1的該中心光軸L為圓心且以半徑分別為1.5mm、3mm及7.1mm所圍繞界定出的一第一光學區111、一第二光學區112,及一周邊區12。該第二光學區112自該第一光學區111的外緣向外延伸,該周邊區12自該第二光學區112的外緣向外延伸。該連續變焦隱形眼鏡1的該中心光軸L處的厚度為0.08mm,該第一光學區111的基弧曲率半徑為8.6mm及圓錐常數(K)為0.3,該第一光學區111的起始屈光鏡度為-3.0D,該第一光學區111的屈光鏡度沿徑向向外的平均變化率為+0.125D/mm,該第二光學區112的屈光鏡度沿徑向向外的平均變化率為+0.875D/mm,該第二光學區112至半徑3mm邊緣處的屈光鏡度為-1.5D。 Referring to FIG. 5, FIG. 6, and FIG. 7, the continuous zoom contact lens 1 of Embodiment 1 of the present invention is suitable for the design of a pressure-reducing lens for relieving the burden of close-eye gaze of the eye 9. The continuous zoom contact lens 1 is formed by HEMA water gel by UV light irradiation, and comprises the center axis L of the continuous zoom contact lens 1 as a center and defined by a radius of 1.5 mm, 3 mm and 7.1 mm, respectively. A first optical zone 111, a second optical zone 112, and a peripheral zone 12. The second optical zone 112 extends outwardly from an outer edge of the first optical zone 111, the peripheral zone 12 extending outwardly from an outer edge of the second optical zone 112. The thickness of the central optical axis L of the continuous zoom contact lens 1 is 0.08 mm, the radius of curvature of the base arc of the first optical zone 111 is 8.6 mm, and the conic constant (K) is 0.3, the starting of the first optical zone 111 The initial refractive power is -3.0D, the average change rate of the refractive power of the first optical zone 111 in the radial direction is +0.125D/mm, and the average refractive change of the second optical zone 112 in the radial direction is radially outward. The rate is +0.875 D/mm, and the degree of diopter at the edge of the second optical zone 112 to the radius of 3 mm is -1.5 D.
該連續變焦隱形眼鏡1透過該第一光學區111及該第二光學區112的非球面及連續變焦設計,能避免習知多焦點隱形眼鏡非連續的階梯急遽變化所造成的跳像或分光現象進而引起的模糊影像或適應不良現象產生。 Through the aspherical and continuous zoom design of the first optical zone 111 and the second optical zone 112, the continuous zoom contact lens 1 can avoid the jump image or the spectroscopic phenomenon caused by the discontinuous step change of the multifocal contact lens. The resulting blurred image or maladaptive phenomenon occurs.
再者,該第一光學區111的屈光鏡度變化是不影響其位在黃斑中心凹911處的成像品質,而從該第二光學區112的範圍開始沿徑向向外以正值增加屈光鏡度,到半徑為3mm時的屈光鏡度已達-1.50D,使視網膜91的周邊範圍912的成像焦點較前,產生近視性離焦,藉此減緩睫狀肌92因調整水晶體93曲率的所產生緊繃程 度,有效降低眼睛9的負荷。值得一提的是,該連續變焦隱形眼鏡1在距離該中心光軸L等於半徑3mm之處的屈光鏡度與該中心光軸L處的屈光鏡度的差值若大於1.5D,造成過度近視性離焦反而影響到成像品質,因此控制在距離該中心光軸L等於半徑3mm之處的屈光鏡度與該中心光軸L處的屈光鏡度的差值不大於1.5D時,會同時具備成像品質及放鬆睫狀肌92的效果,有效解決目前大部分配戴光區球面設計隱形眼鏡的長期視近眼睛疲勞問題。 Moreover, the change in the degree of refracting of the first optical zone 111 is such that it does not affect the imaging quality of the spot at the fovea 911, and the diopter is increased radially outward from the range of the second optical zone 112. When the radius is 3mm, the degree of diopter has reached -1.50D, so that the imaging focus of the peripheral range 912 of the retina 91 is earlier, resulting in myopic defocus, thereby slowing the tightness of the ciliary muscle 92 due to the curvature of the adjustment of the crystal 93. Stretch Degree, effectively reducing the load on the eye 9. It is worth mentioning that the difference between the refractive power of the continuous zoom contact lens 1 at a distance equal to the radius 3 mm from the central optical axis L and the refractive power at the central optical axis L is greater than 1.5D, resulting in excessive myopia. The focus affects the image quality, so if the difference between the refracting degree at the center optical axis L equal to the radius of 3 mm and the diopter at the central optical axis L is not more than 1.5D, the image quality and relaxation will be achieved at the same time. The effect of the ciliary muscle 92 effectively solves the long-term near-eye fatigue problem of most of the currently worn spherical contact lenses.
[實施例2][Embodiment 2]
參閱圖5、圖6及圖8,本發明實施例2適合用於減緩兒童近視,其與該實施例1大致相同,不同之處在於:該連續變焦隱形眼鏡1以矽水膠(Silicone hydrogel)經UV光照射聚合模壓成形,該第一光學區111、該第二光學區112及該周邊區12以該中心光軸L為圓心且分別以半徑1.0mm、3.0mm及7.0mm所圍繞界定出,該第一光學區111的基弧曲率半徑為8.5mm及圓錐常數(K)為0.8,該第一光學區111的起始屈光鏡度為-3.0D,該第一光學區111的屈光鏡度沿徑向向外的平均變化率為+0.125D/mm,該第二光學區112的屈光鏡度沿徑向向外的平均變化率為+1.50D/mm,該周邊光學區112至半徑3mm邊緣處的屈光鏡度為+0.125D。 Referring to FIG. 5, FIG. 6 and FIG. 8, Embodiment 2 of the present invention is suitable for slowing down myopia in children, which is substantially the same as that of Embodiment 1, except that the continuous zoom contact lens 1 is made of Silicone Hydrogel. The first optical zone 111, the second optical zone 112, and the peripheral zone 12 are centered on the central optical axis L and are surrounded by a radius of 1.0 mm, 3.0 mm, and 7.0 mm, respectively. The first optical zone 111 has a base arc curvature radius of 8.5 mm and a conic constant (K) of 0.8, and the first optical zone 111 has a starting refractive power of -3.0 D, and the first optical zone 111 has a refractive index edge. The average rate of change from the radially outward direction is +0.125 D/mm, and the average change rate of the refracting radiance of the second optical zone 112 in the radial direction is +1.50 D/mm, and the peripheral optical zone 112 is at the edge of the radius of 3 mm. The diopter is +0.125D.
該連續變焦隱形眼鏡1透過該第一光學區111及該第二光學區112的非球面及連續變焦設計,能避免習知多焦點隱形眼鏡 非連續的階梯式急遽變化所造成的跳像或分光現象進而引起的模糊影像現象產生,且該第二光學區112透過其屈光鏡度的沿徑向向外的平均變化率大於+0.75D/mm,能產生視網膜91的周邊範圍912的近視性離焦的成像設計,以改善一般框架眼鏡及球面隱形眼鏡所造成視網膜周邊範圍遠視性離焦的設計,因而所衍生的眼軸增長的生理刺激,避免兒童眼睛的眼軸過度拉長,因此本實施例2能兼具控制兒童近視增長和矯正屈光異常。 The continuous zoom contact lens 1 can avoid the conventional multifocal contact lens through the aspherical and continuous zoom design of the first optical zone 111 and the second optical zone 112. A blur image phenomenon caused by a jump image or a spectroscopic phenomenon caused by a discontinuous stepwise sharp change, and the average change rate of the second optical zone 112 through the radial direction of the refracting mirror is greater than +0.75 D/mm. An imaging design capable of producing a myopic defocusing of the peripheral range 912 of the retina 91 to improve the design of the far-sighted defocus of the periphery of the retina caused by the general frame glasses and the spherical contact lens, thereby causing physiological stimulation of the growth of the axon, The eye axis of the child's eye is prevented from being excessively elongated, so that the second embodiment can control the growth of myopia and correct the refractive error of the child.
[實施例3][Example 3]
參閱圖5、圖6及圖9,本發明實施例3適合用於老花眼患者的連續變焦隱形眼鏡1,其與該實施例1大致相同,不同之處在於:該連續變焦隱形眼鏡1以水膠(Hygrogel)經UV光照射聚合模壓成形,該第一光學區111、該第二光學區112及該周邊區12以該中心光軸L為圓心且分別以半徑1.0mm、3.0mm及7.0mm所圍繞界定出,該第一光學區111的起始屈光鏡度為零,該第一光學區111的屈光鏡度沿徑向向外的平均變化率為+0.25D/mm,該第二光學區112的屈光鏡度沿徑向向外的平均變化率為+1.0D/mm,該第二光學區112至半徑3mm邊緣處的屈光鏡度為+2.5D。 Referring to FIG. 5, FIG. 6, and FIG. 9, the embodiment 3 of the present invention is suitable for the continuous zoom contact lens 1 of the presbyopic patient, which is substantially the same as the first embodiment except that the continuous zoom contact lens 1 is made of water glue. (Hygrogel) is subjected to polymerization molding by UV light irradiation, and the first optical zone 111, the second optical zone 112, and the peripheral zone 12 are centered on the central optical axis L and have a radius of 1.0 mm, 3.0 mm, and 7.0 mm, respectively. Around the definition, the initial refractive power of the first optical zone 111 is zero, and the average change rate of the refractive power of the first optical zone 111 in the radial direction is +0.25 D/mm, and the second optical zone 112 The average rate of change of the diopter in the radial direction is +1.0 D/mm, and the degree of diopter at the edge of the second optical zone 112 to the radius of 3 mm is +2.5 D.
該連續變焦隱形眼鏡1透過該第一光學區111及該第二光學區112的非球面及連續變焦設計,能避免習知多焦點隱形眼鏡非連續的階梯急遽變化所造成的跳像或分光現象進而引起的模糊 影像現象產生,且該第一光學區111可供配戴者遠距離觀看景象,而該第二光學區112可供近距離觀看景象,可作為老花眼鏡使用。 Through the aspherical and continuous zoom design of the first optical zone 111 and the second optical zone 112, the continuous zoom contact lens 1 can avoid the jump image or the spectroscopic phenomenon caused by the discontinuous step change of the multifocal contact lens. Causal blur An image phenomenon is generated, and the first optical zone 111 is available for the wearer to view the scene from a distance, and the second optical zone 112 is for viewing the scene at a close distance and can be used as a presbyopic lens.
透過以上的說明,可再將本發明的優點歸納如下: Through the above description, the advantages of the present invention can be further summarized as follows:
一、本發明連續變焦隱形眼鏡1透過沿徑向連續地改變該第一光學區111及該第二光學區112的屈光鏡度,使之不僅能矯正眼球屈光異常,還能同時修正視網膜91的周邊範圍912的成像焦點位置並維持光學品質清晰無像差及跳像或分光現象。 1. The continuous zoom contact lens 1 of the present invention continuously changes the refractive power of the first optical zone 111 and the second optical zone 112 in the radial direction so as to not only correct the refractive error of the eyeball, but also correct the retina 91 at the same time. The imaging focus position of the peripheral range 912 maintains optical quality with no aberrations and skipping or spectroscopic phenomena.
二、透過調整該連續變焦隱形眼鏡1的屈光鏡度變化,使其在該中心光軸L距離等於半徑3mm處的屈光鏡度與該中心光軸L處的屈光鏡度的差值小於1.5D,此時更能有效減少睫狀肌92對水晶體93的調節力,降低長時間近距離用眼所造成的疲勞,能更為舒緩眼睛9的負擔。 2. Adjusting the change in the refractive power of the continuous zoom contact lens 1 such that the difference between the refractive power at the central optical axis L and the radius of 3 mm and the refractive power at the central optical axis L is less than 1.5D. It can effectively reduce the adjustment force of the ciliary muscle 92 to the water crystal 93, and reduce the fatigue caused by the long-term close-eye use, which can relieve the burden of the eye 9.
三、透過沿徑向向外以正值增加該第二光學區112的屈光鏡度,並使其屈光鏡度之平均變化率大於0.75D/mm,即能有效減緩兒童的近視度數的增加。 3. The diopter of the second optical zone 112 is increased by a positive value in the radial direction, and the average rate of change of the diopter is greater than 0.75 D/mm, which can effectively reduce the increase of the myopia degree of the child.
四、透過調整該第一光學區111的起始屈光鏡度,再調整該第二光學區112整體的屈光鏡度變化,使其逐漸增至對應配戴者的遠視度數,使其適合供老花眼患者看遠看近配戴使用。 4. Adjusting the initial refractive power of the first optical zone 111, and then adjusting the diopter change of the second optical zone 112 to gradually increase the degree of hyperopia corresponding to the wearer, making it suitable for presbyopic patients. Look around and wear it.
綜上所述,本發明連續變焦隱形眼鏡1沿徑向連續地改變其屈光鏡度,使之能矯正眼球屈光異常,且解決習知多焦點鏡片 有成像跳像或分光現象而使得配戴者有暈眩等不良反應的問題,並同時修正視網膜91的周邊範圍912成像的焦點位置,以對眼睛能達到有效舒緩壓力,故確實能達成本發明之目的。 In summary, the continuous zoom contact lens 1 of the present invention continuously changes its refractive power in the radial direction, so that it can correct the abnormality of the eyeball and solve the conventional multifocal lens. There is an image jumping phenomenon or a spectroscopic phenomenon, which causes the wearer to have an adverse reaction such as dizziness, and at the same time corrects the focus position of the peripheral region 912 of the retina 91 to achieve effective relief pressure to the eye, so the invention can be achieved. The purpose.
惟以上所述者,僅為本發明之實施例而已,當不能以此限定本發明實施之範圍,凡是依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾,皆仍屬本發明專利涵蓋之範圍內。 However, the above is only the embodiment of the present invention, and the scope of the invention is not limited thereto, and all the equivalent equivalent changes and modifications according to the scope of the patent application and the patent specification of the present invention are still The scope of the invention is covered.
1‧‧‧連續變焦隱形眼鏡 1‧‧‧Continuous zoom contact lenses
11‧‧‧中心光學區 11‧‧‧Center Optical Zone
111‧‧‧第一光學區 111‧‧‧First optical zone
112‧‧‧第二光學區 112‧‧‧Second optical zone
12‧‧‧周邊區 12‧‧‧The surrounding area
L‧‧‧中心光軸 L‧‧‧ central optical axis
9‧‧‧眼睛 9‧‧‧ eyes
91‧‧‧視網膜 91‧‧‧Retina
911‧‧‧黃斑中心凹 911‧‧‧ Macular fovea
912‧‧‧周邊範圍 912‧‧‧around range
92‧‧‧睫狀肌 92‧‧‧Ciliary muscle
93‧‧‧水晶體 93‧‧‧Cell crystal
94‧‧‧眼角膜 94‧‧‧ cornea
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CN111897141A (en) * | 2018-12-25 | 2020-11-06 | 天津医科大学眼科医院 | Peripheral out-of-focus lens and frame glasses |
CN113514962A (en) * | 2021-04-29 | 2021-10-19 | 上允生技股份有限公司 | Continuous zooming contact lens |
CN114594616A (en) * | 2020-12-07 | 2022-06-07 | 远景光学股份有限公司 | Lenses for slowing or preventing myopia progression |
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CN102327160A (en) * | 2006-03-08 | 2012-01-25 | 科学光学股份有限公司 | Method and apparatus for universal improvement of vision |
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