CN208334814U - A kind of Ortho-K - Google Patents
A kind of Ortho-K Download PDFInfo
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- CN208334814U CN208334814U CN201721469695.3U CN201721469695U CN208334814U CN 208334814 U CN208334814 U CN 208334814U CN 201721469695 U CN201721469695 U CN 201721469695U CN 208334814 U CN208334814 U CN 208334814U
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- ortho
- area
- arc area
- base curve
- curvature
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- 210000005252 bulbus oculi Anatomy 0.000 claims abstract description 11
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 230000004438 eyesight Effects 0.000 abstract description 2
- 210000001508 eye Anatomy 0.000 description 13
- 230000000694 effects Effects 0.000 description 8
- 210000004087 cornea Anatomy 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 210000002919 epithelial cell Anatomy 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000001225 therapeutic effect Effects 0.000 description 3
- 230000004379 myopia Effects 0.000 description 2
- 208000001491 myopia Diseases 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003560 epithelium corneal Anatomy 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model belongs to vision correction technical field, more particularly to a kind of novel Ortho-K.The Ortho-K outer surface (1) is the smooth sphere being adapted with human eyeball's curvature, and monnolithic case is ellipse；The positioning arc area (4) is ring curved surface, sets circular layer structure for positioning arc area (4)；The outer edge of the circumference arc area (5), which is located at the long axis endpoint of Ortho-K, is additionally provided with symmetrical stable pterion (6).It solves Ortho-K in the prior art and wears the inconvenient defect for being easy displacement.
Description
Technical field
The utility model belongs to vision correction technical field, more particularly to a kind of novel Ortho-K.
Background technique
Ortho-K is to be subject to one kind using gas permeability hard Contact Lens (i.e. usually said RGP material)
Special Inverse geometric shape design contact lens, inner surface by multiple arc district's groups at, be broadly divided into base curve area, reversion arc area,
Position arc area and circumference arc area.
Ortho-K in the prior art is because the setting in reversion arc area is often all aspherical knot outside Ortho-K
Structure, in addition all cornea plasticity mirrors are all on the whole circle, and wearing is very inconvenient, because of human eye entire eyeball dew after opening
Partially a similar ellipse out, and round Ortho-K in the prior art wear it is extremely difficult, and after being put into
It is easy rotation displacement.
Utility model content
The utility model provides a kind of novel Ortho-K, solves Ortho-K in the prior art and wears
Inconvenience is easy the defect of displacement.
Specific technical solution is that the Ortho-K inner surface includes base curve area, reversion arc area, positioning arc area and periphery
Arc area, the base curve area is for remolding corneal epithelial cell floor；The reversion arc area is for storing tear and receiving corneal epithelium
Cellular layer thickens；The positioning arc area and the circumference arc area are used for the positioning of eyeglass；The Ortho-K outer surface is
The smooth sphere being adapted with human eyeball's curvature, that is, the smooth sphere formulated according to the curvature situation of human eye ball, and
And monnolithic case is ellipse, that is, the whole lateral length of Ortho-K is greater than longitudinal length；The positioning arc area
For ring curved surface, circular layer structure is set by positioning arc area；The outer edge in the circumference arc area is located at the long axis of Ortho-K
Symmetrical stable pterion is additionally provided at endpoint.
Further, the base curve area is aspherical, the equivalent radius of curvature on aspherical lens base curve area periphery
Absolute value is less than the absolute value of the radius of curvature of eyeglass base curve district center.
Further, the central point in base curve area to Ortho-K outer surface central point distance be 0.3mm.
Beneficial effect, 1, by the Ortho-K outer surface be the smooth sphere being adapted with human eyeball's curvature
Design, on the one hand can save manufacturing cost, and the design of smooth football fan in blink of another party's dough figurine will not make one wear eye
Feel, improves wearing comfort；2, it makes one to wear by the design of entire moulding mirror ellipse and be more easier, and in human eye
Locating effect is more preferable, less occurs shifting or rotate；3, it is ring curved surface by positioning arc area, sets circular layer for positioning arc area
Structure can be higher with the human cornea goodness of fit, and the distribution of tear layer is more uniform, so that therapeutic effect is more preferable；4, pass through stabilization
The setting in pterion can make Ortho-K locating effect in human eye more preferable；It 5, is aspherical, the aspheric by base curve area
The absolute value of the equivalent radius of curvature on face eyeglass base curve area periphery is less than the absolute value of the radius of curvature of eyeglass base curve district center
Setting controls the face shape and radius of curvature in lens optical area, keeps it smaller than center in the equivalent radius of curvature absolute value on periphery,
Peripheral surface shape is more precipitous than spherical surface, to make it in radial direction by set power profile mode even variation, eyeglass dioptric
Power increases with aperture increases, provides degree controllable myopiaization defocus for human eye, prevents axis oculi from increasing, retarding myopia is deepened.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model, attached drawing needed for embodiment description will be made below
It is simple to introduce, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, common to this field
For technical staff, without creative efforts, it can also be obtained according to these attached drawings other attached drawings, these
The technical solution that attached drawing is directly obtained should also belong to the protection scope of the utility model.
Fig. 1 is the structural schematic diagram of the cross section of Ortho-K described in the utility model.
Fig. 2 is the present invention looks up structural representation of the Ortho-K of the utility model.
Description of symbols: 1, outer surface；2, base curve area；3, arc area is inverted；4, arc area is positioned；5, circumference arc area；6, steady
Determine pterion.
Specific embodiment
In order to illustrate more clearly of the technical solution of the utility model, attached drawing needed for embodiment description will be made below
It is simple to introduce, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention, common to this field
For technical staff, without creative efforts, it can also be obtained according to these attached drawings other attached drawings, these
The technical solution that attached drawing is directly obtained should also belong to the protection scope of the utility model.
Embodiment 1, as shown in Figure 1 and Figure 2, the Ortho-K inner surface include base curve area 2, reversion arc area 3, positioning
Arc area 4 and circumference arc area 5, the Ortho-K outer surface 1 are the smooth sphere being adapted with human eyeball's curvature, that is,
The smooth sphere formulated according to the curvature situation of human eye ball, and monnolithic case is ellipse, that is, Ortho-K
Whole lateral length is greater than longitudinal length；The positioning arc area 4 is ring curved surface, to set circular layer knot for positioning arc area 4
Structure；The outer edge in the circumference arc area 5 is located at the long axis endpoint of Ortho-K, that is, Ortho-K is lateral
Two edges are additionally provided with symmetrical stable pterion 6.It is to be adapted with human eyeball's curvature by the Ortho-K outer surface
Smooth sphere design, on the one hand can save manufacturing cost, the design of smooth sphere will not in blink for another party's dough figurine
The feeling of wear eye is made one, wearing comfort is improved；It makes one to wear by the design of entire moulding mirror ellipse and be more easier, and
And shifting or rotating more preferably less occur in locating effect in human eye；It is ring curved surface by positioning arc area, and arc will be positioned
Area is set as circular layer structure can be higher with the human cornea goodness of fit, and the distribution of tear layer is more uniform, so that therapeutic effect is more
It is good；Setting by stablizing pterion can make Ortho-K locating effect in human eye more preferable.
As shown in Figure 1 and Figure 2, the Ortho-K inner surface includes base curve area 2, reversion arc area 3, positioning arc to embodiment 2
Area 4 and circumference arc area 5, the base curve area 2 is for remolding corneal epithelial cell floor；The reversion arc area 3 is for storing tear simultaneously
Receive thickening for corneal epithelial cell layer；The positioning arc area 4 and the circumference arc area 5 are used for the positioning of eyeglass；The cornea
Moulding mirror outer surface 1 is the smooth sphere being adapted with human eyeball's curvature, that is, is made according to the curvature situation of human eye ball
Fixed smooth sphere, and monnolithic case is ellipse, that is, the whole lateral length of Ortho-K is greater than longitudinal length
Degree；The positioning arc area 4 is ring curved surface, to set circular layer structure for positioning arc area 4；The outer edge in the circumference arc area 5
Place is located at the long axis endpoint of Ortho-K, that is, the lateral two edges of Ortho-K are additionally provided with symmetrical stabilization
Pterion 6.Further, the base curve area 2 is aspherical, the equivalent radius of curvature on 2 periphery of aspherical lens base curve area
Absolute value is less than the absolute value of the radius of curvature of eyeglass base curve district center.It is and human body eye by the Ortho-K outer surface
On the one hand the design of the adaptable smooth sphere of ball curvature can save manufacturing cost, another party's dough figurine smooth ball in blink
The design in face will not make one the feeling of wear eye, improve wearing comfort；It makes one to match by the design of entire moulding mirror ellipse
It wears and is more easier, and shifting or rotating more preferably less occur in locating effect in human eye；It is ring curved surface by positioning arc area,
Setting circular layer structure for positioning arc area can be higher with the human cornea goodness of fit, and the distribution of tear layer is more uniform, to control
Therapeutic effect is more preferable；Setting by stablizing pterion can make Ortho-K locating effect in human eye more preferable, pass through base curve area
To be aspherical, the absolute value of the equivalent radius of curvature on aspherical lens base curve area periphery is less than the song of eyeglass base curve district center
The setting of the absolute value of rate radius controls the face shape and radius of curvature in lens optical area, makes it in the equivalent radius of curvature on periphery
Absolute value is smaller than center, and peripheral surface shape is more precipitous than spherical surface, to make it in radial direction by set power profile mode
Even variation, eyeglass refractive power increase with aperture increases, provide degree controllable myopiaization defocus for human eye, prevent axis oculi from increasing
Long, retarding myopia is deepened.
Embodiment 3 is further in the technology of above-mentioned technical proposal, outside the central point to Ortho-K in base curve area
The distance of the central point on surface is 0.3mm.It is found through experiments that, the center in face outside the central point in base curve area to Ortho-K
Although moulding effect is also less because wearing comfort improves the reason of Ortho-K material when the distance of point is excessively thin
It is good, therefore 0.3mm is summarized by clinical data, it is the most suitable thickness of the Ortho-K of the application structure, that is, can guarantee modeling
Shape effect is best, and wearing comfort is also relatively strong.
Claims (2)
1. a kind of Ortho-K, inner surface includes base curve area (2), reversion arc area (3), positioning arc area (4) and circumference arc area
(5), it is characterised in that: the Ortho-K outer surface (1) is the smooth sphere being adapted with human eyeball's curvature, whole outer
Shape is ellipse；The positioning arc area (4) is ring curved surface, and the positioning arc area (4) is circular layer structure；The circumference arc area
(5) outer edge, which is located at the long axis endpoint of Ortho-K, is additionally provided with symmetrical stable pterion (6)；The base curve area
(2) to be aspherical, the absolute value of the equivalent radius of curvature on aspherical lens base curve area (2) periphery is less than eyeglass base curve area
(2) absolute value of the radius of curvature at center.
2. Ortho-K according to claim 1, it is characterised in that: the central point of base curve area (2) to Ortho-K
The distance of the central point of outer surface is 0.3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721469695.3U CN208334814U (en) | 2017-11-07 | 2017-11-07 | A kind of Ortho-K |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721469695.3U CN208334814U (en) | 2017-11-07 | 2017-11-07 | A kind of Ortho-K |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208334814U true CN208334814U (en) | 2019-01-04 |
Family
ID=64787819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721469695.3U Active CN208334814U (en) | 2017-11-07 | 2017-11-07 | A kind of Ortho-K |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208334814U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415776A (en) * | 2020-10-15 | 2021-02-26 | 杭州涉吉光学有限公司 | High oxygen permeable orthokeratology lens |
-
2017
- 2017-11-07 CN CN201721469695.3U patent/CN208334814U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112415776A (en) * | 2020-10-15 | 2021-02-26 | 杭州涉吉光学有限公司 | High oxygen permeable orthokeratology lens |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A corneal reshaping lens Effective date of registration: 20231114 Granted publication date: 20190104 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: XI'AN JIAOSHI MEDICAL DEVICE CO.,LTD. Registration number: Y2023980065517 |