CN110716324A - In-vitro compression type cornea shaping method and cornea shaping device thereof - Google Patents
In-vitro compression type cornea shaping method and cornea shaping device thereof Download PDFInfo
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- CN110716324A CN110716324A CN201911028857.3A CN201911028857A CN110716324A CN 110716324 A CN110716324 A CN 110716324A CN 201911028857 A CN201911028857 A CN 201911028857A CN 110716324 A CN110716324 A CN 110716324A
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/047—Contact lens fitting; Contact lenses for orthokeratology; Contact lenses for specially shaped corneae
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Abstract
The invention discloses an in vitro compression type cornea shaping method and a cornea shaping device thereof, aiming at providing the cornea shaping method and the cornea shaping device which are convenient to wear, do not need to be disinfected and do not damage the cornea, the key point of the technical proposal is that a user wears an in vitro compression object in the sleep or eye-using time period, the compression object belongs to an object with certain elasticity, the surface curvature of the compression object is less than the curvature of the cornea of human eyes, and the compression object is bound on the head and forms certain pressure on eyeballs through eyelids; the pressure is automatically adjusted by the wearer according to the comfort degree of eyeballs and the vision improvement degree after wearing; after the compression, the curvature of the cornea of the wearer is compressed to be reduced, and the length of the front axis and the rear axis of the eyeball is also compressed to be reduced, so that the myopia degree of the wearer is reduced, the vision level is improved in a short time, and the cornea compression device is suitable for the technical field of cornea shaping.
Description
Technical Field
The invention relates to the technical field of cornea shaping, in particular to an in-vitro compression type cornea shaping method and a cornea shaping device thereof.
Background
In China, more and more teenagers with myopia are counted as follows: the distribution of myopia population is that pupil has 40%, junior and middle school students have 60%, high and middle school students have 70%, college students have 76% of myopia rate, and the total number of teenager myopia population exceeds 3 hundred million people. A large number of teenagers have started to recover eyesight by wearing glasses, but the myopia degree is easy to become deeper and deeper after wearing the glasses for a long time.
Aiming at the treatment of myopia of teenagers, the mode of wearing the orthokeratology lens is popular in recent years, the orthokeratology lens is transferred from the United states to China in 1998 and is gradually accepted by the market, and a plurality of manufacturers for producing the orthokeratology lens are generated in China, and more than 300 million teenagers are currently used by the orthokeratology lens. The cornea shaping mirror is a high-precision technology in the field of vision, and the basic principle of the cornea shaping mirror is that a piece of cornea shaping mirror is worn in an eye, and the front-back axial length of the eye and the curvature of a cornea are changed by applying certain pressure to the eye, so that the effect of improving myopia is achieved. It belongs to the third category of medical instruments according to the relevant regulations of the State food and drug administration. The fitting work of the orthokeratology lens is a medical work, in the fitting process, the orthokeratology lens needs to be in close contact with the ocular surface, a series of parameters of the cornea and the eyeball are measured, and then the suitable orthokeratology lens is selected in a targeted manner. The cornea shaping mirror is worn at night, and the vision of the next day after wearing the cornea shaping mirror is improved, so that the mirror does not need to be worn in the daytime, the cornea shaping mirror is convenient and comfortable, and the life quality of a wearer is greatly improved. Various domestic and international researches also prove that the orthokeratology lens has a good effect on controlling the development of myopia.
The existing cornea shaping method is to put a cornea shaping mirror (commonly called OK mirror) in human eyes, press the shaping mirror by the pressure of human eyelids, and further press the cornea by the shaping mirror, and the main defects of the existing cornea shaping method are as follows: 1. before wearing the orthokeratology lens, the ophthalmology parameters such as the corneal curvature of a wearer need to be accurately measured, and the process is complicated; 2. the cornea shaping mirror is expensive and high in price; 3. the worn cornea shaping mirror is tightly attached to the cornea of the human eye, and needs to be disinfected every day, so that the wearing is inconvenient and the use cost is high; 4. the wearer may injure the cornea, cause infection, or cause other damage with little carelessness; 5. the orthokeratology lens wearers need to regularly review, and need to change the shaping lens after wearing for more than a year, further increasing the use cost.
Disclosure of Invention
In view of the disadvantages of the prior art, the present invention aims to provide a method and a device for shaping a cornea, which are convenient to wear, do not need to be sterilized and do not damage the cornea. The method does not need complicated testing and distribution processes before use, does not need disinfection in use, and does not need to go to medical institutions for inspection regularly. The product corresponding to the method has low cost and convenient wearing, does not cause corneal injury or pollution, and does not need to frequently replace the shaping device. Therefore, the invention can effectively replace the original cornea shaping technology and has a plurality of advantages.
In order to achieve the purpose, the invention provides the following technical scheme: an in vitro compression type cornea shaping method comprises the following steps: (1) preparing: the device comprises an external variable curvature compressor and an adjusting device for fixing the external variable curvature compressor and adjusting pressure;
(2) the wearing and use: the user wears the oppressed object outside the body, the oppressed object is an elastic object, the oppressed object is bound on the head, is opposite to the eyeball, and forms pressure on the eyeball through the eyelid;
(3) pressure regulation: the pressure is automatically adjusted by the wearer according to the comfort degree when wearing and the vision improvement degree after wearing;
(4) pressing time: the compression time is determined by the wearer, the wearing compression is usually carried out during the sleeping period of the wearer, the wearing compression can be maintained for several hours, the curvature of the cornea of the wearer is compressed to be smaller after the compression, the length of the front and back axes of the eyeball is also compressed to be shorter, and the vision after the wearing is improved. The wearer can wear the glasses for a short time under the condition of non-sleep state and temporary eyes-free, and the time length is determined by the wearer;
(5) adjusting: the wearer should test the vision after each long-time compression, the pressure of the next wearing and the compression time are adjusted according to the degree of vision improvement and the rebound time after the vision improvement, and the reasonable compression pressure and compression time are formed after the adjustment, so that the vision of the wearer can be maintained for hours without wearing glasses after the night compression.
By adopting the technical scheme, 1, the object pressing the eyeball is positioned outside the body, and pressure is applied to the eyeball after the object contacts the eyelid, so that the front-back axis of the eyeball is shortened, and the curvature of the cornea is reduced. The shaping method avoids the situation that the corneal shaping lens contacts the eyeball, does not have the situations of eyeball infection and corneal injury, and does not need disinfection; 2. the cornea curvature measurement of a wearer is not needed before wearing the object pressing the eyeball, so the operation is very simple and convenient; 3. the pressure of the object for pressing the eyeballs on the eyeballs is determined by the wearer, the wearer can remove the wearing object after wearing the object, the vision improvement condition is immediately checked, and the pressure and the time for wearing the object next time are determined according to the vision improvement condition; 4. the in-vitro compression type cornea shaping device related by the method has the advantages of simple and convenient processing, low manufacturing cost, no need of disinfection and convenient use.
The invention is further configured to: the curvature of the face of the in-vitro variable-curvature compressor facing the eyelid is smaller than that of a human eyeball.
By adopting the technical scheme, the curvature of the face, facing the eyelid, of the external variable curvature pressing object is smaller than that of the human eyeball, the curvature of the wearing object can change along with the change of wearing pressure and is not a fixed curvature value, the wearing object is enabled to be more attached to the human eyeball, and a good cornea shaping effect is ensured.
The invention is further configured to: the oppression thing is stereoplasm oppression thing or is soft oppression thing or is bag formula liquid oppression thing or is gasbag oppression thing, the oppression mode not only adopts the oppression thing direct compression, also can adopt the mode that gas blows the oppression or is liquid impact oppression.
Through adopting above-mentioned technical scheme, the oppression thing is the stereoplasm oppression thing or for soft oppression thing or for bag formula liquid oppression thing or for gasbag oppression thing or for gaseous blowing oppression or for liquid impact, the oppression mode is various, be convenient for adjust, the suitability is strong, simple structure, gaseous blowing oppression or for liquid impact also adopt gaseous blowing oppression or liquid impact to oppress eyelid's mode to realize the purpose of oppression, the oppression mode that this article related to, the mode that conventional oppression thing comes oppression has not come, it blows or sprays liquid to oppress to the eyelid to indicate.
A cornea shaping device suitable for an in-vitro compression type cornea shaping method comprises a compression object used for clinging to an eyelid and a fixing device used for fixing the compression object.
The invention is further provided that the constriction is provided with a jacket.
The invention is further provided that the fixing device comprises a binding belt which is connected with two ends of the oppressed object and has elasticity, and a buckle which is arranged on the binding belt and is used for adjusting the tension of the binding belt.
The invention is further provided that the pressure formed by the snap is between 0.1N and 100N.
The invention is further arranged that the compressor is strip-shaped, the width of which is larger than the diameter of the human eye.
Through adopting above-mentioned technical scheme, beneficial effect: 1. the in-vitro compression type cornea shaping device comprises a compression object used for clinging to eyelids and a fixing device used for fixing the compression object, when the compression object is fixed through the fixing device, the pressure of the compression object on eyeballs can be changed by adjusting the tightness of the fixing device, and the pressure and the compression time are continuously adjusted according to the change condition of the vision after being compressed, so that the correction effect is ensured;
2. the cornea is shaped by adopting an in-vitro compression method, so that complicated ophthalmic optical tests are not required before compression, a medical institution is not required to perform periodical reexamination, and meanwhile, in-vitro compression objects are not required to be sterilized, the daily operation of a wearer is simplified, and the use cost is greatly reduced;
3. simple structure and strong stability.
Drawings
Fig. 1 is a structural diagram of an external compression type cornea shaping device before acting on an eyeball.
Fig. 2 is a schematic view of the structure of the external pressing object and the eyeball after long-time wearing.
Fig. 3 is a schematic structural diagram of an in vitro compression type cornea shaping device.
Reference numeral 11 in fig. 3, an extracorporeal compressor; 12. a jacket; 13. a binding band; 14. buckling; 15. an eyeball; 16. a head portion.
Detailed Description
An embodiment of an in vitro compression-type corneal shaping method and a corneal shaping device thereof according to the present invention will be further described with reference to fig. 1 to 3.
The cornea shaping device is further described with reference to fig. 1 and 2.
An in vitro compression type cornea shaping method comprises the following steps: (1) preparing: the device comprises an external variable curvature compressor and an adjusting device for fixing the external variable curvature compressor and adjusting pressure;
(2) the wearing and use: a user wears a pressing object outside the body, the pressing object belongs to an object with certain elasticity, and the pressing object is bound on the head, is opposite to the eyeball and forms certain pressure on the eyeball through the eyelid;
(3) pressure regulation: the pressure is automatically adjusted by the wearer according to the comfort degree when wearing and the vision improvement degree after wearing;
(4) pressing time: the compression time is determined by the wearer, the wearing compression is usually carried out during the sleeping period of the wearer, the wearing compression can be maintained for several hours, the curvature of the cornea of the wearer is compressed to be smaller after the compression, the length of the front and back axes of the eyeball is also compressed to be shorter, and the vision after the wearing is improved. The wearer can wear the glasses for a short time under the condition of non-sleep state and temporary eyes-free, and the time length is determined by the wearer;
(5) adjusting: the wearer should test the vision after each long-time compression, and the pressure of the next wearing and the compression time are adjusted according to the degree of vision improvement and the rebound time after the vision improvement until reasonable compression pressure and compression time are found out, so that the vision of the wearer can be maintained for hours without wearing glasses after one night of compression.
Fig. 1 is a structural view showing a cornea curvature of an external compression type orthokeratology device before it is applied to an eyeball, and showing that the cornea curvature is large and the length of an axis of the eyeball is long, and fig. 2 is a schematic view showing a structure of an external compression object and an eyeball after being worn for a long time, wherein the cornea curvature is small and the length of the axis of the eyeball is short.
By adopting the technical scheme, 1, the object pressing the eyeball is positioned outside the body, and pressure is applied to the eyeball after the object contacts the eyelid, so that the front-back axis of the eyeball is shortened, and the curvature of the cornea is reduced. The shaping method avoids the situation that the corneal shaping lens contacts the eyeball, does not have the situations of eyeball infection and corneal injury, and does not need disinfection; 2. the cornea curvature measurement of a wearer is not needed before wearing the object pressing the eyeball, so the operation is very simple and convenient; 3. the pressure of the object for pressing the eyeballs on the eyeballs is determined by the wearer, the wearer can remove the wearing object after wearing the object, the vision improvement condition is immediately checked, and the pressure and the time for wearing the object next time are determined according to the vision improvement condition; 4. the in-vitro compression type cornea shaping device related by the method has the advantages of simple and convenient processing, low manufacturing cost, no need of disinfection and convenient use.
The invention is further configured to: the curvature of the face of the in-vitro variable-curvature compressor facing the eyelid is smaller than that of a human eyeball.
By adopting the technical scheme, the curvature of the face, facing the eyelid, of the external variable curvature pressing object is smaller than that of the human eyeball, the curvature of the wearing object can change along with the change of wearing pressure and is not a fixed curvature value, the wearing object is enabled to be more attached to the human eyeball, and a good cornea shaping effect is ensured.
The invention is further configured to: the oppression thing is stereoplasm oppression thing or is soft oppression thing or is bag formula liquid oppression thing or is gasbag oppression thing, the oppression mode not only adopts the oppression thing direct compression, also can adopt the mode that gas blows the oppression or is liquid impact oppression.
Through adopting above-mentioned technical scheme, the oppression thing is stereoplasm oppression thing or for soft oppression thing or for bag formula liquid oppression thing or for gasbag oppression thing or for gaseous blowing oppression or for liquid impact, and the oppression mode is various, is convenient for adjust, and the suitability is strong, simple structure.
The corneal shaping device is further described with reference to fig. 3.
A cornea shaping device suitable for an in-vitro compression type cornea shaping method comprises a compression object used for clinging to an eyelid and a fixing device used for fixing the compression object.
The invention is further arranged such that the exterior of the compressor is provided with an outer casing 12.
The invention further provides that the fixing device comprises an elastic binding belt 13 connected at two ends of the oppressed object and a buckle 14 arranged on the binding belt 13 and used for adjusting the tension of the binding belt 13.
The invention is further arranged that the pressure formed by the buckle 14 is between 0.1N and 100N, and the pressure formed by the buckle 14 can be dispersed on the periphery of the eye bone, thereby achieving the effect of dispersing the pressure.
The invention is further arranged that the compressor is strip-shaped, the width of which is larger than the diameter of the human eye.
Through adopting above-mentioned technical scheme, beneficial effect: 1. the in-vitro compression type cornea shaping device comprises a compression object used for clinging to eyelids and a fixing device used for fixing the compression object, when the compression object is fixed through the fixing device, the pressure of the compression object on the eyeball 15 can be changed by adjusting the tightness of the fixing device, and the pressure and the compression time are continuously adjusted according to the change condition of the vision after being compressed, so that the correction effect is ensured;
2. the cornea is shaped by adopting an in-vitro compression method, so that complicated ophthalmic optical tests are not required before compression, a medical institution does not need to perform periodical reexamination, and the in-vitro compression object 11 is not required to be sterilized, so that the daily operation of a wearer is simplified, and the use cost is greatly reduced;
3. simple structure and strong stability.
In the embodiment of the invention, a rubber pressing object is adopted, and the concrete structure is as follows:
as shown in fig. 3, an in vitro compression type cornea shaping device comprises a compression object for clinging to an eyelid, an outer sleeve 12, a binding band 13 for fixing the compression object, and a buckle 14 arranged on the binding band 13 and used for adjusting the tightness degree of the binding band 13, wherein the pressure formed by the buckle 14 for pulling the compression object to an eyeball 15 is 0.1N-100N, and the compression object is in a long strip shape, and the width of the compression object is larger than the diameter of a human eye.
Through adopting above-mentioned technical scheme, beneficial effect: 1. the in-vitro compression type cornea shaping device comprises a compression object used for clinging to eyelids and a fixing device used for fixing the compression object, when the compression object is fixed through the fixing device, the pressure of the compression object on the eyeball 15 can be changed by adjusting the tightness of the fixing device, and the pressure and the compression time are continuously adjusted according to the change condition of the vision after being compressed, so that the correction effect is ensured;
2. the cornea is shaped by adopting an in-vitro compression method, so that complicated ophthalmic optical tests are not required before compression, a medical institution does not need to perform periodical reexamination, and the in-vitro compression object 11 is not required to be sterilized, so that the daily operation of a wearer is simplified, and the use cost is greatly reduced;
3. simple structure and strong stability.
In use, the wearer faces the pressing object to the eyeball 15, then the binding bands 13 are wound around the two sides of the head 16 to the position of the hindbrain, then the two binding bands 13 are combined by the buckle 14, and the position of the buckle 14 is adjusted according to the comfort degree of the eyeball 15 until the pressing object is fully attached to the eyelid and can keep continuously pressing.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art should be able to make general changes and substitutions within the technical scope of the present invention.
Claims (9)
1. An in vitro compression type cornea shaping method is characterized by comprising the following steps:
(1) preparing: the device comprises an external variable curvature compressor and an adjusting device for fixing the external variable curvature compressor and adjusting pressure;
(2) the wearing and use: the user wears the oppressed object outside the body, the oppressed object is an elastic object, the oppressed object is bound on the head, is opposite to the eyeball, and forms pressure on the eyeball through the eyelid;
(3) pressure regulation: the pressure is automatically adjusted by the wearer according to the comfort degree when wearing and the vision improvement degree after wearing;
(4) pressing time: the compression time is determined by the wearer, the wearing compression is usually carried out during the sleeping period of the wearer, the wearing compression can be maintained for several hours, the curvature of the cornea of the wearer is compressed to be smaller after the compression, the length of the front and back axes of the eyeball is also compressed to be shorter, and the vision after the wearing is improved. The wearer can wear the glasses for a short time under the condition of non-sleep state and temporary eyes-free, and the time length is determined by the wearer;
(5) adjusting: the wearer should test the vision after each long-time compression, the pressure of the next wearing and the compression time are adjusted according to the degree of vision improvement and the rebound time after the vision improvement, and the reasonable compression pressure and compression time are formed after the adjustment, so that the vision of the wearer can be maintained for hours without wearing glasses after the night compression.
2. The method of claim 1, wherein the curvature of the face of the external variable curvature compressor facing the eyelid is smaller than the curvature of the human eyeball.
3. The in vitro compression-type corneal shaping method according to claim 1, wherein the compression object is a hard compression object or a soft compression object or a liquid bag-type compression object or a balloon compression object.
4. The in vitro compression-type orthokeratology method of claim 1, wherein the compression object is a gas or liquid impact.
5. A corneal shaping device suitable for the in vitro compression-type corneal shaping method according to claims 1 to 4, comprising a compression member (11) for abutting against the eyelid, and a fixing means for fixing the compression member (11).
6. An in vitro compression-type corneal shaping device according to claim 5, wherein the outer casing (12) is arranged outside the compression device (11).
7. The in vitro compression-type keratoplasty device according to claim 5, wherein the fixing device comprises an elastic binding band (13) connected to both ends of the compression object (11) and a buckle (14) arranged on the binding band (13) for adjusting the tightness of the binding band (13).
8. The in vitro compression-type orthokeratology device according to claim 7, wherein the pressure of the buckle (14) pulling the compressor (11) on the eyeball is between 0.1N and 100N.
9. An in vitro compression-type orthokeratology device according to claim 5, characterized in that the compression object (11) is an elongated shape with a width larger than the diameter of a human eye.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911028857.3A CN110716324A (en) | 2019-10-28 | 2019-10-28 | In-vitro compression type cornea shaping method and cornea shaping device thereof |
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| CN201911028857.3A CN110716324A (en) | 2019-10-28 | 2019-10-28 | In-vitro compression type cornea shaping method and cornea shaping device thereof |
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Application publication date: 20200121 |