CN202748558U - Myopia-preventing soft contact lens - Google Patents
Myopia-preventing soft contact lens Download PDFInfo
- Publication number
- CN202748558U CN202748558U CN 201220471039 CN201220471039U CN202748558U CN 202748558 U CN202748558 U CN 202748558U CN 201220471039 CN201220471039 CN 201220471039 CN 201220471039 U CN201220471039 U CN 201220471039U CN 202748558 U CN202748558 U CN 202748558U
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- China
- Prior art keywords
- contact lens
- soft contact
- myopia
- utility
- peripheral
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Abstract
The utility model provides a myopia-preventing soft contact lens which comprises a central base curve, a peripheral base curve and an internal curved surface, wherein the size of the central base curve is determined according to the correction diopter of the lens, and the peripheral base curve and the internal curved surface are same in curvature. By using the contact lens with the structure disclosed by the utility model, when parallel rays are focused to a macular-area ray, rays at the peripheral part of a cornea are focused in front of retina so as to form the peripheral forward focusing of the retina, and the formation of forward focusing can effectively prevent the development of myopia.
Description
Technical field
The utility model relates to a kind of soft contact lens, is specifically related to a kind of pre-myopic-preventing soft contact lens.
Technical background
Ortho-K has good prevention effect to adolescent myopia.Ortho-K prevents bathomorphic principle to be: Ortho-K has changed the central portion curvature of cornea, curvature diminishes, when light by cornea central area (diameter 6mm) when focusing on the macula retinae place, and the curvature of cornea surrounding zone does not change, when light passes through periphery, because cornea periphery curvature is constant, light focusing is before retina, form the front out of focus of periphery, out of focus is to accelerate the main cause that myopia forms after experimental results show that around the macula lutea, and out of focus can stop bathomorphic development and formation before the periphery.
Teenager's wearing frame eyeglasses, because the impact of mirror eye distance, parallel rays is behind retina at retina image-forming during by the cornea periphery, forms out of focus behind the periphery, so can not stop the development of myopia behind the wearing frame eyeglasses.
The contact lenses kind roughly is divided into now: high oxygen flow gas penetration potential hard contact lens RGP and soft contact lens SCL.Soft contact lens can absorb moisture, permeated oxygen, and soft it is few that corneal stimulates and crooked, meets the requirement of cornea respiratory metabolism.But general soft contact lens does not have pre-myopic-preventing function, can be with reference to a kind of soft contact lens capable of preventing myopia of Ortho-K principle design.
The utility model content
Technical problem to be solved in the utility model is to solve the problem that the general soft contact lens that exists in the prior art does not have pre-Anti-myopic eye function.
The utility model provides a kind of pre-myopic-preventing soft contact lens, comprises central basic arc, peripheral basic arc, negative camber, and the size of central basic arc is corrected diopter and decided peripheral basic arc and negative camber iso-curvature according to glasses.
Adopt the contact lenses of the utility model structure, when parallel rays focused on macular area light, the light of cornea periphery formed the retinal periphery prefocusing in the retina prefocusing, and the formation of prefocusing just can effectively stop bathomorphic development.
Description of drawings
Fig. 1 is the utility model structural representation.
Wherein, 1 central basic arc, 2 peripheral basic arcs, 3 negative cambers, 4 edge angles.
Embodiment
Below in conjunction with accompanying drawing technical solutions of the utility model are elaborated.
As shown in Figure 1, the utility model provides a kind of pre-myopic-preventing soft contact lens, comprises central basic arc 1, peripheral basic arc 2, negative camber 3, and the size of central basic arc 1 is corrected diopter according to glasses and decided, the basic arc 2 of periphery and negative camber 3 iso-curvatures, negative camber 3 is taked the aspheric surface design.The basic arc 2 of periphery passes through edge angle 4 combinations with negative camber 3.
The utility model soft contact lens central area diameter 6mm is the optical correction district, and the size of the central basic arc 1 in rectification district is corrected diopter according to eyes and decided, and parallel rays focuses on macula retinae section by correcting the district.When parallel rays focused on macula area light, the light of cornea periphery formed the retinal periphery prefocusing in the retina prefocusing, and the formation of prefocusing just can effectively stop bathomorphic development.
It should be noted last that, above embodiment is only unrestricted for the explanation the technical solution of the utility model, although with reference to preferred embodiment the utility model is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the claim scope of the present utility model.
Claims (3)
1. pre-myopic-preventing soft contact lens, comprise central basic arc (1), peripheral basic arc (2), negative camber (3), the size that it is characterized in that central basic arc (1) is corrected diopter according to glasses and is decided peripheral basic arc (2) and negative camber (3) iso-curvature.
2. a kind of pre-myopic-preventing soft contact lens according to claim 1 is characterized in that negative camber (3) takes the aspheric surface design.
3. a kind of pre-myopic-preventing soft contact lens according to claim 1 is characterized in that peripheral basic arc (2) and negative camber (3) pass through edge angle (4) combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471039 CN202748558U (en) | 2012-09-17 | 2012-09-17 | Myopia-preventing soft contact lens |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220471039 CN202748558U (en) | 2012-09-17 | 2012-09-17 | Myopia-preventing soft contact lens |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202748558U true CN202748558U (en) | 2013-02-20 |
Family
ID=47707928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220471039 Expired - Fee Related CN202748558U (en) | 2012-09-17 | 2012-09-17 | Myopia-preventing soft contact lens |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202748558U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181701A (en) * | 2013-05-24 | 2014-12-03 | 亨泰光学有限公司 | Lens apparatus and vision control method |
| US9612454B2 (en) | 2013-05-24 | 2017-04-04 | Brighten Optix Corporation | Lens and method for correcting vision of a user |
| WO2017096995A1 (en) * | 2015-12-07 | 2017-06-15 | 齐备 | Soft cornea-contacting lens |
| CN107085315A (en) * | 2017-06-21 | 2017-08-22 | 王桂云 | A kind of concentric circles defocus haptic lens |
-
2012
- 2012-09-17 CN CN 201220471039 patent/CN202748558U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104181701A (en) * | 2013-05-24 | 2014-12-03 | 亨泰光学有限公司 | Lens apparatus and vision control method |
| CN104181701B (en) * | 2013-05-24 | 2016-04-13 | 亨泰光学股份有限公司 | Lens device and vision control method |
| US9612454B2 (en) | 2013-05-24 | 2017-04-04 | Brighten Optix Corporation | Lens and method for correcting vision of a user |
| WO2017096995A1 (en) * | 2015-12-07 | 2017-06-15 | 齐备 | Soft cornea-contacting lens |
| CN107085315A (en) * | 2017-06-21 | 2017-08-22 | 王桂云 | A kind of concentric circles defocus haptic lens |
| CN107085315B (en) * | 2017-06-21 | 2023-07-14 | 王桂云 | Concentric circle defocus contact lens |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20130917 |