CN214067515U - Hard corneal contact lens for correcting hyperopia - Google Patents
Hard corneal contact lens for correcting hyperopia Download PDFInfo
- Publication number
- CN214067515U CN214067515U CN202120181361.6U CN202120181361U CN214067515U CN 214067515 U CN214067515 U CN 214067515U CN 202120181361 U CN202120181361 U CN 202120181361U CN 214067515 U CN214067515 U CN 214067515U
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- Prior art keywords
- lens
- optical zone
- peripheral
- central
- contact lens
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- 206010020675 Hypermetropia Diseases 0.000 title claims description 21
- 230000004305 hyperopia Effects 0.000 title claims description 21
- 201000006318 hyperopia Diseases 0.000 title claims description 21
- 230000003287 optical effect Effects 0.000 claims abstract description 78
- 230000002093 peripheral effect Effects 0.000 claims abstract description 64
- 210000001525 retina Anatomy 0.000 claims abstract description 24
- 210000005252 bulbus oculi Anatomy 0.000 claims abstract description 10
- 238000005452 bending Methods 0.000 claims abstract description 4
- 230000000750 progressive effect Effects 0.000 claims description 7
- 201000009487 Amblyopia Diseases 0.000 abstract description 14
- 230000004330 high hyperopia Effects 0.000 abstract description 10
- 208000010073 high hyperopia Diseases 0.000 abstract description 10
- 239000011521 glass Substances 0.000 abstract description 6
- 230000004438 eyesight Effects 0.000 abstract description 4
- 206010002945 Aphakia Diseases 0.000 abstract description 2
- 238000003384 imaging method Methods 0.000 description 4
- 230000000007 visual effect Effects 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000004373 eye development Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 206010012559 Developmental delay Diseases 0.000 description 1
- 208000029091 Refraction disease Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000004430 ametropia Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 208000030533 eye disease Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 208000014733 refractive error Diseases 0.000 description 1
- 230000002207 retinal effect Effects 0.000 description 1
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- Eyeglasses (AREA)
Abstract
The utility model discloses a hard corneal contact lens for correcting high hyperopia, which comprises a lens, wherein the lens comprises a central optical area, a peripheral optical area and a side arc area which are integrally formed, the central optical area is positioned in the central area of the lens, the peripheral optical area is arranged around the central optical area, and the side arc area is arranged around the peripheral optical area; the central optical area is a positive lens which accords with the bending brightness of the eyeball of the patient, the peripheral optical area is a negative lens, the outer surface of the positive lens is spherical or aspherical, the outer surface of the negative lens is aspherical, and the outer surface of the lens is aspherical. By wearing the hard corneal contact lens, the high hyperopia patient child can obtain clear and stable vision, amblyopia is prevented, and the cure rate of amblyopia is improved; and when the glasses are worn, hyperopic defocusing is formed on peripheral retina, the development of the ocular axis of a child with high hyperopia is promoted, the amblyopia treatment time is shortened, and the aphakia rate is improved.
Description
Technical Field
The utility model relates to a medical treatment vision correction technical field, in particular to a rigid corneal contact lens for correcting high hyperopia.
Background
The children stage is a key stage of visual development, the ametropia of children is a common reason causing amblyopia, the amblyopia is a common eye disease influencing the vision of the children, the hypermetropia is an important reason forming the amblyopia of the children, and the amblyopia can be caused by visual development disorder due to untimely treatment. Therefore, the patient can be timely and effectively optically corrected to prevent the occurrence of amblyopia and improve the cure rate of amblyopia.
Currently, the clinical correction modes for children with high hyperopia are mainly: wearing frame glasses, wearing day-worn hard corneal contact lenses (RGPs). When the frame glasses wearing the positive lenses are used for correcting high hyperopia, the problems of heavy lenses, non-coincidence lens centers, prism effect, huge aberration and distortion, reduced visual field and the like exist. Although the RGP solves the problems existing in the frame glasses correction, because the lenses belong to the positive lenses, the RGP and the frame glasses form a clear object image in the center of the retina, the image of the middle periphery part is positioned in front of the retina, and the imaging shell is only matched with the center of the retina, so that the lens is difficult to be removed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a hard contact lens for high hyperopia is rescued to solve the technical problem who provides among the above-mentioned background art.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a rigid contact lens for the correction of high hyperopia, comprising a lens comprising an integrated central optical zone, a peripheral optical zone and an edge zone, the central optical zone being located in a central region of the lens, the peripheral optical zone being disposed around the central optical zone, the edge zone being disposed around the peripheral optical zone;
the central optical area is a positive lens which accords with the bending brightness of the eyeball of the patient, the peripheral optical area is a negative lens, the outer surface of the positive lens is spherical or aspherical, the outer surface of the negative lens is aspherical, and the outer surface of the lens is aspherical.
The utility model discloses a further set up to: the peripheral optical zone starts to perform progressive defocus outside the half-chord length of the lens by 3-5 mm so as to form hyperopic defocus on the peripheral retina.
The utility model discloses a further set up to: the peripheral optical zone consistently defocuses peripheral retina hyperopia by 3.00D.
The utility model discloses a further set up to: when the degree of the peripheral optical zone is +2000 to 0 degree, the eccentricity of the peripheral optical zone is 0 to 0.645.
The utility model discloses a further set up to: the eccentricity of the outer surface of the central optical zone is less than the eccentricity of the outer surface of the peripheral optical zone.
The utility model discloses a further set up to: the thickness of the central position of the lens is 0.15-0.30 mm.
The utility model discloses a further set up to: the inner surface of the lens is spherical or aspherical.
The utility model discloses a further set up to: the diameter of the central optical zone is 6.0-6.4 mm.
The utility model discloses a further set up to: the arc width of the peripheral optical zone is 3 mm.
The utility model discloses a further set up to: the arc width of the side arc area is 0.6-1.2 mm.
The utility model discloses an action principle:
1. the light passes through the central optical zone to form clear object image in the central retina, so as to correct the hyperopia of the children patients, prevent the amblyopia and improve the cure rate of the amblyopia.
2. The light rays pass through the peripheral optical area to form hyperopic defocusing on the peripheral retina, the imaging shell is inosculated in the central area of the retina, the image of the middle peripheral part is positioned behind the retina, and the retina has the tendency of closing the imaging shell, thereby promoting the development of the eye axis and leading the high hyperopic patient child to obtain a larger chance of lens removal.
Compared with the prior art, the utility model discloses following beneficial effect has:
by wearing the hard corneal contact lens, the high hyperopia patient child can obtain clear and stable vision, amblyopia is prevented, and the cure rate of amblyopia is improved; and when the glasses are worn, hyperopic defocusing is formed on peripheral retina, the development of the ocular axis of a child with high hyperopia is promoted, the amblyopia treatment time is shortened, and the aphakia rate is improved.
Drawings
FIG. 1 is a front view of a contact lens of the present invention in the form of a contact lens for placement on an eye of a patient;
fig. 2 is a schematic view of the optical path of the contact lens of the present invention when worn on the eyeball of a patient.
In the figure: 1. a lens; 11. a central optical zone; 12. a peripheral optical zone; 13. a side arc region; 2. an eyeball; 21. A retina; 211. a central clear image area; 212. peripheral out-of-focus image areas.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "front", "back", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
as shown in fig. 1-2, a rigid contact lens for correcting hyperopia includes a lens 1, the lens 1 includes a central optical zone 11, a peripheral optical zone 12 and an edge zone 13 which are integrally formed, the central optical zone 11 is located in a central area of the lens 1, the peripheral optical zone 12 is disposed around the central optical zone 11, and the edge zone 13 is disposed around the peripheral optical zone 12; the central optical zone 11 is a positive lens conforming to the refractive brightness of the eyeball 2 of the patient, the peripheral optical zone 12 is a negative lens, the outer surface of the positive lens is spherical or aspheric, the outer surface of the negative lens is aspheric, and the outer surface of the lens 1 is aspheric. Specifically, the outer surface of the peripheral optical zone 12 of the present invention is aspheric, i.e. the eccentricity at point a on the outer surface of the peripheral optical zone 12 is different from the eccentricity at point B (see fig. 1).
Specifically, the peripheral optical zone 12 in this embodiment begins progressive defocus beyond 3mm of half chord length of the lens 1 to form a hyperopic defocus at the peripheral retina.
Specifically, the peripheral optical zone 12 in this embodiment always defocus the peripheral retinal hyperopia by 3.00D.
Specifically, when the degree of the peripheral optical zone 12 is +2000 to 0 degree, the eccentricity of the peripheral optical zone 12 is 0 to 0.645.
Specifically, the eccentricity of the outer surface of the central optical zone 11 is smaller than the eccentricity of the outer surface of the peripheral optical zone 12.
Specifically, the thickness at the center position of the lens 1 in the present embodiment is 0.15 mm.
Specifically, the inner surface of the lens 1 in this embodiment is spherical, and the fitting process and manufacturing process of the lens 1 are relatively simple.
Specifically, the diameter of the central optical zone 11 in this embodiment is 6.0 mm.
Specifically, the arc width of the peripheral optical zone 12 in this embodiment is 3 mm.
Specifically, the arc width of the side arc region 13 in the present embodiment is 0.6 mm.
Example 2:
the same features of this embodiment as those of embodiment 1 are not described again, and the different features are:
in this embodiment, the peripheral optical zone 12 starts to be out of the progressive defocus 3.5mm beyond the half chord length of the lens 1, so as to form a hyperopic defocus on the peripheral retina.
The thickness of the lens 1 in the present embodiment at the center thereof is 0.20 mm.
The inner surface of the lens 1 in this embodiment is aspheric, so that the lens has good fitting property with the eyeball 2 and better comfort.
The diameter of the central optical zone 11 in this embodiment is 6.1 mm.
The arc width of the side arc region 13 in this embodiment is 0.7 mm.
Example 3:
the same features of this embodiment as those of embodiment 1 or 2 are not described again, but different features are as follows:
in this embodiment, the peripheral optical zone 12 starts to be out of the progressive defocus by 4mm beyond the half chord length of the lens 1, so as to form a hyperopic defocus on the peripheral retina.
The thickness of the lens 1 in this embodiment at the center thereof is 0.25 mm.
The diameter of the central optical zone 11 in this embodiment is 6.2 mm.
The arc width of the side arc region 13 in this embodiment is 0.9 mm.
Example 4:
the same features of this embodiment as those of embodiment 1 or 2 are not described again, but different features are as follows:
in this embodiment, the peripheral optical zone 12 starts to be out of the progressive defocus by 4.5mm beyond the half chord length of the lens 1, so as to form a hyperopic defocus on the peripheral retina.
The thickness of the lens 1 in the present embodiment at the center thereof is 0.28 mm.
The diameter of the central optical zone 11 in this embodiment is 6.3 mm.
The arc width of the side arc region 13 in this embodiment is 1.0 mm.
Example 5:
the same features of this embodiment as those of embodiment 1 or 2 are not described again, but different features are as follows:
in this embodiment, the peripheral optical zone 12 starts to be out of the progressive defocus by 5mm beyond the half chord length of the lens 1, so as to form a hyperopic defocus on the peripheral retina.
The thickness of the lens 1 in the present embodiment at the center thereof is 0.30 mm.
The diameter of the central optical zone 11 in this embodiment is 6.4 mm.
The arc width of the side arc region 13 in this embodiment is 1.2 mm.
It should be noted that, the peripheral optical region 12 of the present invention can also start to defocus gradually outside the lens 1 half chord length 3-5 mm to form hyperopia defocus at the peripheral retina, which is shown in the above embodiments without affecting the protection scope of the present invention.
Furthermore, the utility model discloses a thickness that 1 central point of lens put department also can be for the arbitrary value in 0.15 ~ 0.30mm within range, and it does not influence to show in the above-mentioned embodiment the utility model discloses a protection scope.
The diameter of the central optical zone 11 may be any value within the range of 6.0-6.4 mm, which is shown in the above embodiments and does not affect the protection scope of the present invention.
The arc width of the side arc area 13 can also be any value within the range of 0.6-1.2 mm, and the protection range of the utility model is not affected as shown in the above embodiment.
Referring to fig. 1-2, when a user wants to correct hyperopia (i.e. the imaging distance of the eyeball is too long), he can wear the contact lens of the present invention first, when the light passes through the central optical area 11 of the lens 1, he can image on the central clear image area 211 of the retina 21 of the eyeball 2, and when the light passes through the peripheral optical area 12 of the lens 1, since the positive bending brightness number of the peripheral optical area 12 is lower than that of the central optical area 11, and the outer surface of the peripheral optical area 12 is aspheric, the peripheral image can be imaged at the rear position of the peripheral out-of-focus image area 212 of the retina 21, at this time, the eyeball 2 can promote the axial development of the eye in order to image the distant scene on the retina 21, and at the same time, it can effectively delay the deepening of the hyperopia, thereby achieving the effect of correcting and improving hyperopia.
The above embodiments are only some examples of the present invention, and are not intended to limit the present invention in any way; the invention is not limited to the embodiments described herein, but is capable of other embodiments according to the invention, and may be used in various other applications, including, but not limited to, industrial. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments by the technical entity of the present invention all still belong to the protection scope of the technical solution of the present invention.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A rigid contact lens for the correction of hyperopia, comprising a lens (1), characterized in that: the lens (1) comprises a central optical zone (11), a peripheral optical zone (12) and an edge arc zone (13) which are integrally formed, wherein the central optical zone (11) is positioned in the central area of the lens (1), the peripheral optical zone (12) is arranged around the central optical zone (11), and the edge arc zone (13) is arranged around the peripheral optical zone (12);
the central optical zone (11) is a positive lens which accords with the bending brightness of an eyeball (2) of a patient, the peripheral optical zone (12) is a negative lens, the outer surface of the positive lens is spherical or aspherical, the outer surface of the negative lens is aspherical, and the outer surface of the lens (1) is aspherical.
2. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: the peripheral optical zone (12) starts to perform progressive defocus outside the half chord length of the lens (1) by 3-5 mm so as to form hyperopic defocus on the peripheral retina.
3. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: the peripheral optical zone (12) is consistently hyperopic by 3.00D in the peripheral retina.
4. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: when the degree of the peripheral optical zone (12) is +2000 to 0 degree, the eccentricity of the peripheral optical zone (12) is 0 to 0.645.
5. The rigid corneal contact lens for hyperopia correction of claim 1, wherein: the eccentricity of the outer surface of the central optical zone (11) is less than the eccentricity of the outer surface of the peripheral optical zone (12).
6. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: the thickness of the central position of the lens (1) is 0.15-0.30 mm.
7. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: the inner surface of the lens (1) is spherical or aspherical.
8. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: the diameter of the central optical zone (11) is 6.0-6.4 mm.
9. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: the arc width of the peripheral optical zone (12) is 3 mm.
10. The rigid corneal contact lens for hyperopia correction of high altitude as claimed in claim 1, wherein: the arc width of the side arc area (13) is 0.6-1.2 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120181361.6U CN214067515U (en) | 2021-01-22 | 2021-01-22 | Hard corneal contact lens for correcting hyperopia |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120181361.6U CN214067515U (en) | 2021-01-22 | 2021-01-22 | Hard corneal contact lens for correcting hyperopia |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214067515U true CN214067515U (en) | 2021-08-27 |
Family
ID=77393028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120181361.6U Expired - Fee Related CN214067515U (en) | 2021-01-22 | 2021-01-22 | Hard corneal contact lens for correcting hyperopia |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214067515U (en) |
-
2021
- 2021-01-22 CN CN202120181361.6U patent/CN214067515U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210827 |