CN103389585A - Contact lens - Google Patents
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- CN103389585A CN103389585A CN2012101521026A CN201210152102A CN103389585A CN 103389585 A CN103389585 A CN 103389585A CN 2012101521026 A CN2012101521026 A CN 2012101521026A CN 201210152102 A CN201210152102 A CN 201210152102A CN 103389585 A CN103389585 A CN 103389585A
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- cornea
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Abstract
The invention provides a contact lens. An inner surface of the contact lens is divided into a base arc zone, a reverse arc zone, a positioning arc zone, and a peripheral arc zone from the center to the periphery. The reverse arc zone is divided into a first reverse arc zone and a second reverse arc zone. The first reverse arc zone is connected with the base arc, and the second reverse arc zone is connected with the positioning arc zone. The positioning arc zone is an annular curved surface. According to a human cornea shape, the reverse arc zone is divided into the first reverse arc zone and the second reverse arc zone, such that the contact lens can be accurately on the cornea, and a lens falling risk is prevented. The positioning arc zone of the inner surface of the lens is designed into a multi-zone annular curved surface, such that the lens match better with the cornea, the lens is centered and more accurately positioned, and eye sight treatment effect is improved.
Description
Technical field
The present invention relates to a kind of spectacles, relate in particular to a kind of contact lenses for the correction ocular eyesight.
Background technology
Contact lenses claim again contact lens, directly to be attached on the tear layer of cornea, compatible with people's physiology of eye, reach the purpose of vision correction, its effect of vision correction to high myopia and high astigmatism is good, and do not have the visual field to be subjected to the puzzlement of mirror holder restriction,, controlling adolescent myopia, astigmatism development, treat the special aspects such as illness in eye and also brought into play special effect.Not only keep better eyes to look, use safety, convenient, attractive in appearance, also have some special lens can meet some specific (special) requirements.Corrective therapy myopia is mainly due to eyeglass and tear layer skewness, and consequent fluid mechanics effect symmetrically, gradual change cornea central surface shape lowers myopia; Be worn over the cornea front portion in bed, make progressively that the cornea flexibility flattens, axis oculi shortens, thereby effectively reduced myopia degree, improve eyesight.
Contact lenses are to adopt in addition a kind of contact lens of Special Inverse geometric shape design of gas penetration potential hard Contact Lens (being usually said RGP material), it is because of the lipid, the albumen that more do not adsorb in tear, and airborne dust, so to eye-safe, and its life-span is longer.The inside surface of contact lenses is comprised of a plurality of arcs district, mainly is divided into Ji Huqu, counter-rotating arc district, arc district, location and circumference arc district.
Although contact lenses can help most people to improve eyesight, the contact lenses of conventional shape, because each arc district of its inside surface is sphere, to the obvious cornea of some astigmatism, location is difficult to placed in the middle, and result for the treatment of is poor and feel unwell complete.
In addition, because most people's cornea is irregular, the gap in the middle of eyeglass and cornea is also irregular, indirectly causes the imbalance of tear, makes eyeglass produce skew, and the location of contact lens on cornea is undesirable, therefore do not reach the purpose of correcting defects of vision.
Summary of the invention
The present invention will solve above-mentioned deficiency exactly, and a kind of non-standard sphere, location and the good contact lenses of result for the treatment of are provided.
In order to reach above-mentioned effect, the invention provides a kind of contact lenses, its inside surface is divided into Ji Huqu, counter-rotating arc district, arc district, location and circumference arc district from center toward periphery, described counter-rotating arc is divided into the first counter-rotating arc district and the second counter-rotating arc district, described the first counter-rotating arc district is connected with Ji Huqu, and the second counter-rotating arc district is connected with arc district, location; Arc district, described location is the ring curved surface.
The preferred version of such scheme is, described the first inboard cambered surface in counter-rotating arc district is sphere, and the inboard cambered surface in the second counter-rotating arc district is concave surface.
The preferred version of such scheme is that described ring curved surface is divided into multi-region according to the axial length radius.
The preferred version of such scheme is, described multi-region is the 2N district, and N is integer.Ru Erqu, 4th district, 8th district, tenth district etc.
Because contact lens is directly to be attached on the tear layer of cornea, can be filled with tear fluid between eyeglass and cornea, strengthen the adaptability of eyes.According to irregular cornea shape, central authorities are sphere, and there is again a circle projection outside in counter-rotating arc district, so the first inboard cambered surface in counter-rotating arc district is to be mostly and the similar sphere of Ji Huqu according to the central geometrical feature of cornea; The inboard cambered surface in the second counter-rotating arc district is concave surface, makes the gap balance relatively between counter-rotating arc district and cornea, and tear of being distributed in each district, also with regard to balance, makes contact lenses localization criteria on cornea, can not produce the danger that eyeglass comes off.
Eyeglass is between two parties can be accurately, the moulding key of corneal safely, and keep uniform tear floor between arc district, location and cornea, is to guarantee eyeglass most important factor placed in the middle.Astigmatism is cornea significantly, the cornea form is ellipticity, the arc district, location of eyeglass inside surface is designed to the ring curved surface in 2 multiple district, Ru Erqu, 4th district, 8th district etc., make it follow the degree of agreement between cornea to improve, the tear layer is evenly distributed, and reaches lens orientation placed in the middle, more accurate, change the cornea geometric shape safely and change corneal diopter, improve the effect of eyesight.
In addition, come the ring curved surface subregion in arc district, location of designing contact lenses and the axial length in each district according to the geometric shape of the cornea of individuality, these can get by calculating, are not the themes that the present invention protects.Thereby the contact lenses that make every individuality reach best therapeutic purposes.
The present invention has following advantage:
1, according to the shape of eye cornea, the arc that will reverse is divided into the first counter-rotating arc district and the second counter-rotating arc district, makes contact lenses localization criteria on cornea, can not produce the danger that eyeglass comes off;
2, the arc district, location of eyeglass inside surface is designed to the ring curved surface of multi-region, makes it follow the degree of agreement between cornea to improve, make lens orientation placed in the middle, more accurate, improve the eyesight result for the treatment of;
3, come the ring curved surface subregion in arc district, location of designing contact lenses and the axial length in each district according to the geometric shape of the cornea of individuality, make contact lenses reach best therapeutic purposes.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Fig. 1 is front view of the present invention;
Fig. 2 is A-A cut-open view in Fig. 1;
In figure: 1-Ji Huqu, 2A-the first counter-rotating arc district, 2B-the second counter-rotating arc district, 3-locates arc district, 4-circumference arc district, 5-cornea.
Embodiment
Embodiment one:
Contact lenses as shown in Figure 1, its inside surface is divided into basic arc district 1, counter-rotating arc district, arc district 3, location and circumference arc district 4 from center toward periphery, described counter-rotating arc is divided into the first counter-rotating arc district 2A and the second counter-rotating arc district 2B, described the first counter-rotating arc district 2A is connected with basic arc district 1, and the second counter-rotating arc district 2B is connected with arc district 3, location; The first inboard cambered surface of counter-rotating arc district 2A is sphere, and the inboard cambered surface of the second counter-rotating arc district 2B is concave surface.Arc district, described location 3 is multi-region ring curved surface, that ring curved surface quantity that the situation such as cornea hardness, cornea shape, intraocular pressure level, corneal astigmatism according to individuality is calculated the arc district, location of designing contact lenses is 2 multiple, Ru Erqu, 4th district, 8th district, tenth district etc.
Embodiment two:
Contact lenses as shown in Figure 2 are attached on cornea 5, the inside surface of contact lenses is divided into basic arc district 1, counter-rotating arc district, arc district 3, location and circumference arc district 4 from center toward periphery, described counter-rotating arc is divided into the first counter-rotating arc district 2A and the second counter-rotating arc district 2B, described the first counter-rotating arc district 2A is connected with basic arc district 1, and the second counter-rotating arc district 2B is connected with arc district 3, location.
The first inboard cambered surface of counter-rotating arc district 2A is sphere, and the inboard cambered surface of the second counter-rotating arc district 2B is concave surface, and the eyeglass inside surface is conformed to more with the shape of cornea, and eyeglass is relatively stable on cornea, and eyes are brought good result for the treatment of.
Arc district, described location 3 is multi-region ring curved surface, the ring curved surface quantity of calculating the arc district, location of designing contact lenses according to situations such as the cornea hardness of individuality, cornea shape, intraocular pressure level, corneal astigmatisms is 2 multiple, Ru Erqu, 4th district, 8th district, tenth district etc.Improve with the degree of agreement between cornea in the arc district, location that makes contact lenses, and the tear layer is evenly distributed, and reaches lens orientation placed in the middle, more accurate, change the cornea geometric shape safely and change corneal diopter, improves the effect of eyesight.
Above embodiment is not limited only to protection scope of the present invention, all modify based on basic thought of the present invention or change all belong to protection scope of the present invention.
Claims (4)
1. contact lenses, its inside surface is divided into Ji Huqu, counter-rotating arc district, arc district, location and circumference arc district from center toward periphery, it is characterized in that: described counter-rotating arc is divided into the first counter-rotating arc district and the second counter-rotating arc district, described the first counter-rotating arc district is connected with Ji Huqu, and the second counter-rotating arc district is connected with arc district, location; Arc district, described location is the ring curved surface.
2. a kind of contact lenses according to claim 1 is characterized in that: described the first inboard cambered surface in counter-rotating arc district is sphere, and the inboard cambered surface in the second counter-rotating arc district is concave surface.
3. a kind of contact lenses according to claim 1, it is characterized in that: described ring curved surface is divided into multi-region according to the axial length radius.
4. a kind of contact lenses according to claim 3, it is characterized in that: described multi-region is the 2N district, N is integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101521026A CN103389585A (en) | 2012-05-08 | 2012-05-08 | Contact lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101521026A CN103389585A (en) | 2012-05-08 | 2012-05-08 | Contact lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103389585A true CN103389585A (en) | 2013-11-13 |
Family
ID=49533898
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101521026A Pending CN103389585A (en) | 2012-05-08 | 2012-05-08 | Contact lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103389585A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114185184A (en) * | 2020-09-14 | 2022-03-15 | 亨泰光学股份有限公司 | Cornea molding lens structure in parallel arc |
-
2012
- 2012-05-08 CN CN2012101521026A patent/CN103389585A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114185184A (en) * | 2020-09-14 | 2022-03-15 | 亨泰光学股份有限公司 | Cornea molding lens structure in parallel arc |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131113 |