CN1256908A - Contact lens for curing myopia and making method thereof - Google Patents
Contact lens for curing myopia and making method thereof Download PDFInfo
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- CN1256908A CN1256908A CN 00110035 CN00110035A CN1256908A CN 1256908 A CN1256908 A CN 1256908A CN 00110035 CN00110035 CN 00110035 CN 00110035 A CN00110035 A CN 00110035A CN 1256908 A CN1256908 A CN 1256908A
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- cambered surface
- radius
- treatment myopia
- curvature
- adherent lens
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Abstract
The present invention relates to a corneal contact lens and its production method. Said lens is made into the form of hemispheroid, and the inside toroidal of said lens is formed from basic cambered surface, regulating cambered surface, correcting cambered surface and edge cambered surface, and its production method include the following steps: cutting negative camber, checking and polishing, cutting positive camber, checking and polishing, polishing edge, checking finished product crystal lens and packaging. By utilizing physical pressing method the corneal curvature can be progressively changed, the front focus can be pushed back onto the retina, so that it is a high medical technique, has no need of operation, and its safety it high.
Description
The present invention relates to treat the eyeglass of myopia and the technical field of manufacture method thereof.
The function that existing corneal contact lens (being contact lens) is only corrected defects of vision, the function of not treatment myopia.The method of treatment myopia is a lot, but all is traumatic treatment, as; Radial keratotomy, corneal lens art, epikeratophakia, lamellar keratoplasty, PRK (phototherapeutic keratectomy) and excimer laser original position mill edge art automatically.The method of these treatment myopia all more or less corneal structure and physiological action thereof change to some extent, what have the vision fluctuation also occurs.
The purpose of this invention is to provide a kind of treatment myopia, correct defects of vision, dependable performance, safety, good effect, merit skill simple treatment myopia adherent lens and manufacture method thereof.
The object of the present invention is achieved like this, and the treatment contact lens is a dome-type, and the eyeglass inner curve is by basic cambered surface R
1, levelling cambered surface R
2, correct cambered surface R
3With edge cambered surface R
4Constitute.
Elementary arc curvature of face radius R
1Be 5.91～10.91mm, cambered surface diameter ∮
1Be 5.00～8.00mm.
Levelling cambered surface radius of curvature R
2Be 4.09～9.09mm, outside diameter ∮
2Be 5.20～10.00mm.
Correct the cambered surface radius of curvature R
3Be 5.26～10.26mm, outside diameter ∮
3Be 5.80～13.00mm.
Marginal arc curvature of face radius R
4Be 8.1～13.1mm, outside diameter ∮
4Be 5.90～14.00mm.
The cambered surface curvature circle-center is got a little on same axis.
Lens thickness is that δ is 0.18～0.25mm.
The manufacture method of treatment myopia adherent lens is:
First step cutting inner arc: raw material is that fluorine is moulded, and cuts on computer speed control lathe, and temperature is 22～24 ℃, cuts basic cambered surface, levelling cambered surface, corrects cambered surface and edge cambered surface by dimensional requirement.
Second step inner arc inspection: detect data with the radius instrument and whether meet the requirements.
The inner arc polishing of the 3rd step: observe with the radius instrument, any surface finish gets final product.
The 4th step cutting outer arc: cut basic cambered surface, levelling cambered surface, correct cambered surface and edge cambered surface by dimensional requirement.
The outer arc polishing of the 5th step: observe with the radius instrument, any surface finish gets final product.
The 6th step outer arc inspection: check with slide gauge whether the outer arc size meets the requirements.
The 7th step edge polishing: observe with the radius instrument, any surface finish gets final product.
The 8th step finished product sheet inspection packing.
Advantage of the present invention is that design consideration patient's different situations of four cambered surfaces are calculated by computer, and basic cambered surface is in order to change the curvature of cornea, to correct near-sighted incorrect focus; Levelling cambered surface, rectification cambered surface are to become bent radian in order to adapt to cornea; The edge cambered surface can guarantee can have tear to pass through below the eyeglass.The method of Applied Physics compressing makes corneal curature variation gradually, and front focus postpones to retina, is the high-tech medical skill, does not need operation, has safely, and no pain, applicable object are not subjected to age limit, do not change the organizational structure and the physiology of cornea.Raw material is that fluorine is moulded, and has oxygen permeability, transparency and better elastic, hardness, toughness, and production technology is simple, treatment myopia is effective.
The present invention is described in detail below in conjunction with drawings and Examples.
Fig. 1 is a lens structure sketch map of the present invention
Fig. 2 is an eyeglass side-looking cambered surface curvature sketch map of the present invention
Fig. 3 is an eyeglass manufacturing process flow diagram of the present invention
Embodiment 1
This treatment myopia adherent lens is a dome-type, the eyeglass inner curve
Elementary arc curvature of face radius R
1Be 8.74mm, cambered surface diameter ∮
1Be 7.60mm,
Levelling cambered surface radius R
2Be 6.79mm, outside diameter ∮
2Be 8.70mm,
Correct cambered surface radius R
3Be 8.02mm, outside diameter ∮
3Be 10.30mm,
Marginal arc curvature of face radius R
4Be 10.6mm, outside diameter ∮
4Be 10.7mm.
By dimensional requirement, by the eyeglass that the manufacture method described in the scheme processes, after the patient used, about three all produce effects can reach the near-sighted purpose of treatment.
Embodiment 2
This treatment myopia adherent lens is a dome-type, the eyeglass inner curve
Elementary arc curvature of face radius R
1Be 8.41mm, cambered surface diameter ∮
1Be 7.30mm,
Survey positive cambered surface radius R
2Be 6.59mm, outside diameter ∮
2Be 8.4mm,
Correct cambered surface radius R
3Be 7.76mm, outside diameter ∮
3Be 10.3mm,
Marginal arc curvature of face radius R
4Be 10.6mm, outside diameter ∮
4Be 10.7mm.
By dimensional requirement, by the eyeglass that the manufacture method described in the scheme processes, after the patient used, about two all produce effects can reach the near-sighted purpose of treatment.
Claims (8)
1, treatment myopia adherent lens is characterized in that eyeglass is a dome-type, and the eyeglass inner curve is by basic cambered surface R
1, levelling cambered surface R
2, correct cambered surface R
3With edge cambered surface R
4Constitute.
2, treatment myopia adherent lens according to claim 1 is characterized in that elementary arc curvature of face radius R
1Be 5.91～10.91mm, cambered surface diameter ∮
1Be 5.00～8.00mm.
3, treatment myopia adherent lens according to claim 1 is characterized in that aligning the cambered surface radius of curvature R
2Be 4.09～9.09mm, outside diameter ∮
2Be 5.20～10.00mm.
4, treatment myopia adherent lens according to claim 1 is characterized in that correcting the cambered surface radius of curvature R
3Be 5.26～10.26mm, outside diameter ∮
3Be 5.80～13.00mm.
5, treatment myopia adherent lens according to claim 1 is characterized in that marginal arc curvature of face radius R
4Be 8.1～13.1mm, outside diameter ∮
4Be 5.90～14.00mm.
6, treatment myopia adherent lens according to claim 1 is characterized in that the cambered surface curvature circle-center gets a little on same axis.
7, treatment myopia adherent lens according to claim 1 is characterized in that lens thickness is that δ is 0.18～0.25mm.
8, the manufacture method of treatment myopia adherent lens is characterized in that,
First step cutting inner arc: raw material is that fluorine is moulded, and cuts on computer speed control lathe, and temperature is 22～24 ℃, cuts basic cambered surface, levelling cambered surface, corrects cambered surface and edge cambered surface by dimensional requirement,
The inner arc inspection of second step: detect data with the radius instrument and whether meet the requirements,
The inner arc polishing of the 3rd step: observe with the radius instrument, any surface finish gets final product,
The 4th step cutting outer arc: cut basic cambered surface, levelling cambered surface, correct cambered surface and edge cambered surface by dimensional requirement,
The outer arc polishing of the 5th step: observe with the radius instrument, any surface finish gets final product,
The outer arc inspection of the 6th step: check with slide gauge whether the outer arc size meets the requirements,
The 7th step edge polishing: observe with the radius instrument, any surface finish gets final product,
The 8th step finished product sheet inspection packing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110035 CN1256908A (en) | 2000-01-14 | 2000-01-14 | Contact lens for curing myopia and making method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110035 CN1256908A (en) | 2000-01-14 | 2000-01-14 | Contact lens for curing myopia and making method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1256908A true CN1256908A (en) | 2000-06-21 |
Family
ID=4580064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00110035 Pending CN1256908A (en) | 2000-01-14 | 2000-01-14 | Contact lens for curing myopia and making method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1256908A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3495873A4 (en) * | 2016-10-31 | 2019-09-11 | Toray Industries, Inc. | Orthokeratology lens |
-
2000
- 2000-01-14 CN CN 00110035 patent/CN1256908A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3495873A4 (en) * | 2016-10-31 | 2019-09-11 | Toray Industries, Inc. | Orthokeratology lens |
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| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |