CN104035209B - A kind of comfortable contact lens for myopia - Google Patents
A kind of comfortable contact lens for myopia Download PDFInfo
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- CN104035209B CN104035209B CN201410263849.8A CN201410263849A CN104035209B CN 104035209 B CN104035209 B CN 104035209B CN 201410263849 A CN201410263849 A CN 201410263849A CN 104035209 B CN104035209 B CN 104035209B
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Abstract
The present invention relates to a kind of comfortable contact lens for myopia.The contact lens that object is to provide have comfortable, oxygen transmission rate is high, the feature of not cracky.Technical scheme is: the hard lenses that the gas penetration potential hard material that this contact lens comprises the revolution bodily form makes and hydrated polymer material make and be coated on the soft edge of hard lenses neighboring area; For holding the tear district of tear between hard lenses and soft edge.<pb pnum="1" />
Description
Technical field
The present invention relates to a kind of contact lens, specifically a kind of comfortable contact lens for myopia.
Background technology
At present, patient's foreign body sensation when wearing the common hard corneal contact lens for myopia is stronger, and Patient Experience is not good.During daytime, relatively frequently, the friction of contact lens and eyelid brings strong foreign body sensation for Rotation of eyeball and eyelid flicker.In evening, Rotation of eyeball and eyelid flicker tail off, but the tear in eyeglass and cornea liquid storage cylinder exchanges and also can reduce thereupon, causes pluck mirror difficulty morning next day.Some patient even needs to drip 1-2 dripping eyedrop, and forced rotating eyes just can pluck mirror.In addition, the current common hard corneal contact lens for myopia due to the factor of material, the edge all easily breakage when making processing and patient uses.
Summary of the invention
The object of the invention is to overcome the deficiency in above-mentioned background technology, a kind of comfortable contact lens for myopia is provided; This contact lens have comfortable, oxygen transmission rate is high, the feature of not cracky.
Technical scheme provided by the invention is: a kind of comfortable contact lens for myopia, is characterized in that: the hard lenses that the gas penetration potential hard material that this contact lens comprises the revolution bodily form makes and hydrated polymer material make and be coated on the soft edge of hard lenses neighboring area; For holding the tear district of tear between hard lenses and soft edge.
Described gas penetration potential hard material is the one in fluorine silicon acrylic acid ester, silica gel acrylic acid, fluorinated siloxane polymkeric substance.
Described hydrated polymer material is the one in hydrogel, methymethacrylate, hydroxyethyl methylacrylate, metering system acid glyceride.
The front surface of described hard lenses is convex front face, and an annular groove concaved is arranged on this surface; The inside surface of described hard lenses from the middle base arc toward periphery successively annular arrangement, in advance reverse arc, reversion arc, pre-determined bit arc, locate arc, distal circumference arc, circumference arc totally 7 cambered surfaces; Described distal circumference arc includes an annular outwards recessed groove; Transition cambered surface between the front surface of hard lenses and inside surface is annular break-in face.
The front surface at described soft edge contains the inside projection of annular, and this projection matches with the groove of hard lenses front surface and mates; The inside surface at soft edge contains the outside outstanding of annular, and this outstanding matching with the groove of described distal circumference arc is mated; The front surface at soft edge and the transition cambered surface of inside surface are annular break-in face.
The front surface correspondence at described soft edge covers all cambered surfaces of hard lenses inside surface except base arc, and the inside surface at described soft edge covers distal circumference arc, the circumference arc of hard lenses inside surface.
The invention has the beneficial effects as follows:
Hard lenses in the present invention is wrapped up by soft edge, reduces the risk of lens edge breakage.And when Rotation of eyeball and eyelid flicker, foreign body sensation during patient-worn can be reduced.
Filled by tear district between hard lenses of the present invention and soft edge.Because soft edge is soft, there is very large deformation by external force, so hard lenses, soft edge and tear district form a pump jointly.When Rotation of eyeball and eyelid flicker, be equivalent at squeegee pump.Be no matter daytime or at night, this structure all accelerates tear and exchanges, thus strengthen corneal oxygen supply and improve comfort level when patient joins mirror.
Inside surface of the present invention comprise base arc, in advance reverse arc, reversion arc, pre-determined bit arc, location arc, distal circumference arc, circumference arc, this 7 cambered surfaces design, can more safety and comfort ground change cornea shape.
Accompanying drawing explanation
Fig. 1 is perspective view of the present invention.
Fig. 2 is main TV structure schematic diagram of the present invention.
Fig. 3 is the A-A cross-sectional view in Fig. 2.
Fig. 4 is B portion structure for amplifying schematic diagram in Fig. 3.
Embodiment
Below in conjunction with Figure of description, the invention will be further described, but the present invention is not limited to following examples.
As shown in the figure, a kind of comfortable contact lens for myopia, comprises hard lenses 1, soft edge 2 and tear district 3; Described hard lenses adopts gas penetration potential hard material (RGP) material to make, make the revolution bodily form by cutting process, inside surface base arc 1-1, pre-reversion arc 1-2, reversion arc 1-3, pre-determined bit arc 1-4, location arc 1-5, distal circumference arc 1-6, circumference arc 1-7 from middle toward periphery (as shown in Figure 1) successively annular arrangement.Described gas penetration potential hard material is the one in several hard corneal contact lens materials such as fluorine silicon acrylic acid ester, silica gel acrylic acid, fluorinated siloxane polymkeric substance.
Base arc 1-1 produces pressure by tear effect, can reduce the diopter of cornea; Pre-reversion arc 1-2 comparatively base arc 1-1 is steep, moves epithelial tissue outside holding portion; The reversion arc 1-3 arc 1-2 that reverse is more in advance smooth, smoothly transits to and locates arc and move epithelial tissue outside holding portion; The pre-determined bit arc 1-4 arc 1-3 that comparatively reverses is smooth, fits, play the role of positioning with cornea; Arc 1-5 is smooth compared with pre-determined bit arc 1-4 in location, and the distal circumference that smoothly transits arc also plays the role of positioning; It is smooth that distal circumference arc 1-6 comparatively locates arc, is convenient to tear and exchanges, distal circumference arc 1-6 has the groove 1-9 that annular is outwards recessed; The front surface (right-hand member) of described hard lenses is convex front face, includes an annular groove 1-8 concaved.
Described soft edge 2 adopts hydrated polymer to make, this hydrated polymer is the one in hydrogel, methymethacrylate, hydroxyethyl methylacrylate, metering system acid glyceride, is usually coated on the neighboring area of hard lenses by the method (common process) of rotary casting; The front surface at soft edge contains the inside protruding 2-1 of annular, and this projection matches with the groove 1-9 concaved of the front surface of hard lenses 1 and mates; The inside surface at described soft edge contains the outside outstanding 2-2 of annular, and this outstanding groove 1-9 outwards recessed with the annular on the inside surface of hard lenses matches and mates.Hard lenses and soft edge 2 be not exclusively laminating also, and the gap (gap length is selected as required) left between them forms the tear district 3 holding tear.
Position due to the protruding 2-1 at soft edge corresponds to the pre-reversion arc 1-2 of hard lenses inside surface, and therefore, the front surface correspondence at soft edge covers all cambered surfaces of hard lenses outside surface except base arc corresponding domain; The inside surface at soft edge then covers distal circumference arc, the circumference arc of hard lenses inside surface.
Claims (4)
1. for a contact lens for myopia, it is characterized in that: the hard lenses (1) that the gas penetration potential hard material that this contact lens comprises the revolution bodily form makes and hydrated polymer material make and be coated on the soft edge (2) of hard lenses neighboring area; For holding the tear district (3) of tear between hard lenses and soft edge;
Described gas penetration potential hard material is the one in fluorine silicon acrylic acid ester, silica gel acrylic acid, fluorinated siloxane polymkeric substance;
Described hydrated polymer material is hydrogel;
The front surface of described hard lenses is convex front face, and an annular groove (1-8) recessed towards the inside surface direction of hard lenses is arranged on this surface; The base arc (1-1) of the inside surface annular arrangement successively from inside to outside of described hard lenses, to reverse arc (1-2), reversion arc (1-3), pre-determined bit arc (1-4), location arc (1-5), distal circumference arc (1-6), circumference arc (1-7) in advance; Described distal circumference arc includes an annular groove (1-9) recessed towards the front surface direction of hard lenses; Transition cambered surface between the front surface of hard lenses and inside surface is annular break-in face.
2. the contact lens for myopia according to claim 1, it is characterized in that: the front surface at described soft edge contains the projection (2-1) in the inside surface direction towards hard lenses of annular, and this projection matches with the groove of hard lenses front surface and mates; The inside surface at described soft edge contains outstanding (2-2) in the front surface direction towards hard lenses of annular, and this outstanding matching with the groove of described distal circumference arc is mated; The front surface at soft edge and the transition cambered surface of inside surface are annular break-in face.
3. the contact lens for myopia according to claim 2, it is characterized in that: the front surface correspondence at described soft edge covers all cambered surfaces of hard lenses outside surface except base arc, and the inside surface at described soft edge covers distal circumference arc, the circumference arc of hard lenses inside surface.
4. the contact lens for myopia according to claim 3, is characterized in that: described hydrated polymer material is the one in methymethacrylate, hydroxyethyl methylacrylate, metering system acid glyceride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263849.8A CN104035209B (en) | 2014-06-13 | 2014-06-13 | A kind of comfortable contact lens for myopia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410263849.8A CN104035209B (en) | 2014-06-13 | 2014-06-13 | A kind of comfortable contact lens for myopia |
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| Publication Number | Publication Date |
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| CN104035209A CN104035209A (en) | 2014-09-10 |
| CN104035209B true CN104035209B (en) | 2015-10-28 |
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| CN201410263849.8A Active CN104035209B (en) | 2014-06-13 | 2014-06-13 | A kind of comfortable contact lens for myopia |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108628001B (en) * | 2018-05-14 | 2019-08-06 | 清华大学深圳研究生院 | It is a kind of for collecting the contact lens of tear protein |
| CN111728767A (en) * | 2020-04-24 | 2020-10-02 | 海南省眼科医院(中山大学中山眼科中心海南眼科医院) | Corneal endothelium protective glasses and application thereof |
| CN112394539B (en) * | 2020-07-22 | 2021-09-14 | 珠海维视艾康特医药科技有限公司 | Scleral lens and lens matching method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3973838A (en) * | 1971-05-04 | 1976-08-10 | Page Louis J | Contact lenses |
| US4166255A (en) * | 1976-06-14 | 1979-08-28 | Minnesota Mining And Manufacturing Company | Hybrid corneal contact lens |
| US7104648B2 (en) * | 2002-09-06 | 2006-09-12 | Synergeyes, Inc. | Hybrid contact lens system and method |
| EP2490620A4 (en) * | 2009-10-23 | 2017-03-22 | Forsight Labs, Llc | Conformable therapeutic shield for vision and pain |
| US8408698B2 (en) * | 2010-03-18 | 2013-04-02 | Vicoh, Llc | Laminated composite lens |
| WO2013176768A1 (en) * | 2012-05-25 | 2013-11-28 | Crt Technology, Inc. | Multicomponent optical device having a space |
| CN203941354U (en) * | 2014-06-13 | 2014-11-12 | 万马电子医疗有限公司 | A kind of comfortable contact lens for myopia |
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Address after: Taihu Qingyun Yuan Zhen Village in Ling'an city of Hangzhou city of Zhejiang Province in 311306 Applicant after: WANMA TECHNOLOGY CO., LTD. Address before: Taihu Qingyun Yuan Zhen Village in Ling'an city of Hangzhou city of Zhejiang Province in 311306 Applicant before: Wanma Electronic Medical Co., Ltd. |
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