CN116125680A - Partitioned gradual change multiple spot defocus type myopia prevention and control lens - Google Patents
Partitioned gradual change multiple spot defocus type myopia prevention and control lens Download PDFInfo
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- CN116125680A CN116125680A CN202310303016.9A CN202310303016A CN116125680A CN 116125680 A CN116125680 A CN 116125680A CN 202310303016 A CN202310303016 A CN 202310303016A CN 116125680 A CN116125680 A CN 116125680A
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Abstract
The invention discloses a partitioned gradual change multipoint defocus type myopia prevention and control lens, which comprises a lens body, wherein two sides of the lens body comprise an outer side surface and an inner side surface, and the lens body comprises a refraction area which is formed by curved surfaces of the outer side surface and the inner side surface together and used for correcting vision; micro convex lenses are regularly and uniformly distributed on the surface of the outer side surface; the optical center of the lens body is provided with a myopia refractive correction area; the periphery of the myopia refraction correction area is respectively formed into a powerful intervention area and an auxiliary buffer intervention area from the optical center to the edge of the lens by micro convex lenses with different diopters; the diopter of the miniature convex lens in the powerful intervention area is larger than that of the miniature convex lens in the auxiliary buffer intervention area. The beneficial effects are that: the invention divides the lens into a central far-use clear area, a powerful intervention area and an auxiliary buffer intervention area through the distribution of the miniature convex lenses with different diopters, and can effectively control the deepening of the myopic power through the powerful intervention area and the myopic defocus powerful intervention and auxiliary intervention respectively applied to retina.
Description
Technical Field
The invention relates to a defocusing lens, in particular to a partitioned gradual change multipoint defocusing myopia prevention and control lens, and belongs to the technical field of myopia lenses.
Background
At present, research on myopia progression shows that the main cause of myopic eye power increase is eye axis length extension, with power increase of 3.00D per 1mm extension. Medical studies have demonstrated that eyeball elongation depends on retinal peripheral defocus, and that in terms of diopter concept, the person with focus in front of the retina is called myopic defocus and the person with focus behind the retina is called hyperopic defocus.
According to the study of zoology and human eyes, it is proved that the eyeball of a human is of an ellipsoidal special structure, and although the human eye mainly uses the macula area in the center of the retina for viewing objects, the peripheral retinal area is larger than the central retinal area, and more neurons exist, so that the peripheral defocus has a larger influence on the growth and the refraction development of the eyeball than the central defocus.
Because the human eye has a self-made mechanism of 'seeing clearly objects', the retina can recognize the defocusing signal and send a signal of 'growing' or 'stopping growing' to the sclera according to defocusing information, so that the growing speed of the eye shaft is controlled. When a common single-light lens is worn, single luminosity only solves the problem that the vision in a central light area is clear, so that central imaging falls on the retina, but peripheral imaging falls behind the retina, the human eye lengthens the eyeball backwards to eliminate peripheral hyperopic defocus, so that peripheral imaging is on the retina, and the eye axis is increased and myopia is deepened. The center of the retina of a myopic eye is in myopic defocus, and the periphery of the retina is in hyperopic defocus, which is a main cause of increasing myopic power.
The myopia defocusing lens can enable the periphery to be imaged on or in front of retina, thus cutting off the motive force of eyeball elongation and achieving the purpose of controlling the deepening of myopia degree.
The concept of peripheral defocus is put together and summarized in the actual clinic in the field of vision optics, and initially doctors find that the length of the eye axis and the growth rate of myopia of part of cornea shaping lens wearers are delayed, so that the effect of peripheral defocus in the eye axis is found, and the theory of peripheral defocus control myopia is formed.
Studies have shown that in order to continue to slow down eye axis growth, the applied near-vision defocus intervention should occur within 20 degrees of field angle from the fovea of the macula, with best results when the applied near-vision defocus occurs within 15 degrees of field angle from the fovea of the macula. Therefore, myopia defocus strong intervention is required to be carried out within 15 degrees of the visual field angle from the central fovea of the macula retinae, and the effect is best by adopting larger defocus amount; while requiring additional intervention in the 15 to 20 degree field angle range from the fovea of the macula.
In the prior art, frame glasses based on theoretical design of peripheral defocus myopia prevention and control all adopt partition structures, the center is designed to be a zero spherical aberration optical zone for accurate imaging, and the edge is designed to be a peripheral defocus control zone or an astigmatic zone with diopter higher than that of the center zone. However, the existing defocusing lenses have the problems of division of a defocusing control area, the size of defocusing amount and the ratio of effective micro convex lenses to the defocusing control area, so that the effects of strong intervention on myopia defocusing within 15 degrees of the angle of view from the central fovea of the macula of the retina and auxiliary intervention effects within 15-20 degrees of the angle of view cannot be generated, and the prevention and control effects of the defocusing lenses on myopia are directly influenced.
Disclosure of Invention
The invention aims to: aiming at the problems in the prior art, the invention provides a partitioned gradual change multipoint defocusing type myopia prevention and control lens, which realizes effective prevention and control of myopia by reasonably setting the quantity distribution and defocusing amount of the micro convex lenses of the defocusing lens.
The technical scheme is as follows: the partitioned gradual change multipoint defocus type myopia prevention and control lens comprises a lens body, wherein two sides of the lens body comprise an outer side surface and an inner side surface, and the lens body comprises a refraction area which is formed by curved surfaces of the outer side surface and the inner side surface together and used for correcting vision; micro convex lenses are regularly and uniformly distributed on the surface of the outer side surface; the optical center of the lens body is provided with a myopia refractive correction area; the periphery of the myopia refraction correction area is respectively formed into a powerful intervention area and an auxiliary buffer intervention area from the optical center to the edge of the lens by miniature convex lenses with different diopters; the diopter of the miniature convex lens in the powerful intervention area is larger than that of the miniature convex lens in the auxiliary buffer intervention area.
The invention divides the lens into refractive areas for correcting vision through the distribution of the micro convex lenses with different diopters, namely a central far-use clear area, a powerful intervention area and an auxiliary buffer intervention area, performs powerful intervention on myopia defocus applied in a 15-degree view angle from the central fovea of the macula of the retina through the powerful intervention area, and simultaneously performs auxiliary intervention in a 15-20-degree view angle range from the central fovea of the macula of the retina through the auxiliary buffer intervention area, so that the deepening of the myopic degree can be effectively controlled.
Preferably, in order to ensure clear and comfortable vision quality, the myopia refractive correction zone is a circular zone with a diameter of 9-10mm.
Preferably, in order to achieve an effective defocus effect, the diameter of the micro convex lens is 0.8-1.6mm, and the positive diopter is +22dto +5. 00d. If the diameter of the micro convex lens is too small, the light transmission effect is not ideal, and the defocusing effect cannot be obtained; if the diameter of the micro convex lens is large, particularly when the diameter of the micro convex lens is larger than that of the pupil, the micro convex lens can form images when the light transmission is large, and the phenomenon of image jump is generated, so that the visual experience is poor. Due to individuation difference, the defocus amount is influenced by the eye axis, cornea curvature and adjusting force of the wearer, namely, the positive diopter can be controlled between plus 2.00D and minus 5.00D, so that the function of individuation myopia intervention is achieved.
Preferably, in order to more effectively realize the intervention effect and simultaneously facilitate the processing of the lens, the micro convex lenses of the powerful intervention area and the auxiliary buffer intervention area are distributed in concentric circles.
Preferably, in order to ensure the defocus adjustment intervention effect, the sum of the projection areas of all the micro convex lenses in the powerful intervention region and the auxiliary buffer intervention region accounts for 40% -60% of the sum of the projection areas of the powerful intervention region and the auxiliary buffer intervention region. The effective defocusing area is too small in occupied area, the effect of adjusting intervention can be affected, and when the area is too large in occupied area, wearing comfort can be affected, so that experiments prove that the area occupied area is reasonably controlled to be between 40% and 60%.
On the premise of ensuring the interference adjustment effect, the miniature convex lenses are distributed on 13 concentric circles from the center to the edge of the lens for facilitating the design and processing of the lens; the 1 st-4 th turn of miniature convex lens on the inner side forms a powerful intervention area; the 5 th-13 th turn micro convex lens forms an auxiliary buffer intervention area; the diopters of the miniature convex lenses on the same circle are the same.
Preferably, in order to further reduce the processing difficulty, the distance between the edges of the adjacent micro convex lenses is more than 0.2mm. When the distance between adjacent micro convex lenses is too small, the processing difficulty is increased, and the quality of the lens is affected.
Preferably, in order to further promote the buffer discrete intervention effect of the auxiliary buffer intervention zone, the auxiliary buffer intervention zone comprises a first auxiliary buffer intervention zone and a second auxiliary buffer intervention zone, the first auxiliary buffer intervention zone being located between the powerful intervention zone and the second auxiliary buffer intervention zone; the diopter of the miniature convex lens in the first auxiliary buffer intervention region is larger than that of the miniature convex lens in the second auxiliary buffer intervention region. The auxiliary buffer intervention zones may also be partitioned into more levels of auxiliary buffer intervention zones based on personalized differences.
Preferably, in order to ensure that the auxiliary buffer intervention zone buffers discrete intervention effects, the 5 th-8 th turn of the micro-convex lens constitutes a first auxiliary buffer intervention zone and the 9 th-13 th turn of the micro-convex lens constitutes a second auxiliary buffer intervention zone. The auxiliary buffer intervention areas of each level need to have a certain width to realize the buffer discrete intervention effect.
Preferably, in order to achieve the effect of personalized myopia intervention, the positive diopter of the miniature convex lens of the powerful intervention area is between plus 2.50D and plus 4.50D. The defocus amount can be set in a personalized way due to the influence of the eye axis, cornea curvature and adjusting force of the wearer; the defocus amount of the auxiliary buffer intervention zone is then gradually reduced.
The beneficial effects are that: the invention divides the lens into a central far-use clear area, a powerful intervention area and an auxiliary buffer intervention area through the distribution of the miniature convex lenses with different diopters, performs myopic defocus strong intervention applied within 15 degrees of the angle of view from the central fovea of the macula of retina through the powerful intervention area, and simultaneously performs auxiliary intervention within 15 to 20 degrees of the angle of view from the central fovea of the macula of retina through the auxiliary buffer intervention area, so that the deepening of myopic degree can be effectively controlled; the defocus amount of the powerful intervention area can be set in a personalized way due to the influence of the eye axis, cornea curvature and adjusting force of the wearer; meanwhile, the defocus amount of the auxiliary buffer intervention area is reduced step by step, and the personalized requirement of myopic patients is met.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of the present invention;
FIG. 2 is a partial enlarged view of a micro-convex lens according to the present invention;
FIG. 3 is a schematic view of the zoning of the present invention;
fig. 4 is a schematic structural diagram of the distribution of the micro convex lenses according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
As shown in fig. 1, 2 and 3, a zoned gradual change multipoint defocus type myopia prevention and control lens comprises a lens body 1, wherein two sides of the lens body 1 comprise an outer side surface 2 and an inner side surface 3, and the lens body 1 comprises a refraction area which is formed by curved surfaces of the outer side surface 2 and the inner side surface 3 and is used for correcting vision; the surface of the outer side surface 2 is regularly and uniformly provided with micro convex lenses 4; the optical center of the lens body 1 is provided with a myopia refraction correction area 5; the periphery of the myopia refraction correction area 5 is respectively provided with a powerful intervention area 6 and an auxiliary buffer intervention area 7 from the optical center to the edge of the lens by micro convex lenses 4 with different diopters; the diopter of the miniature convex lens 4 in the powerful intervening region 6 is larger than that of the miniature convex lens 4 in the auxiliary buffering intervening region 7.
According to the invention, the lens is divided into the dioptric area 5 for correcting vision through the distribution of the micro convex lenses with different diopters, namely a central far clear area, a powerful intervention area 6 and an auxiliary buffer intervention area 7, the powerful intervention area 6 is used for performing powerful intervention on myopia defocus applied in a 15-degree field angle from the central fovea of the macula, and the auxiliary buffer intervention area 7 is used for performing auxiliary intervention in a 15-20-degree field angle range from the central fovea of the macula, so that the deepening of myopia degree can be effectively controlled.
In order to more effectively realize the intervention effect and simultaneously facilitate the processing of the lens, the micro convex lenses 4 of the powerful intervention area 6 and the auxiliary buffer intervention area 7 are distributed in concentric circles.
In order to further promote the buffer discrete intervention effect of the auxiliary buffer intervention zone, the auxiliary buffer intervention zone 7 comprises a first auxiliary buffer intervention zone 71 and a second auxiliary buffer intervention zone 72, the first auxiliary buffer intervention zone 71 being located between the powerful intervention zone 6 and the second auxiliary buffer intervention zone 72; the diopter of the miniature convex lens 4 in the first auxiliary buffer intervention region 71 is greater than the diopter of the miniature convex lens 4 in the second auxiliary buffer intervention region 72. On the premise of ensuring the buffer intervention effect, the auxiliary buffer intervention region 7 can be divided into more stages of auxiliary buffer intervention regions according to personalized differences.
Example 1
As shown in fig. 4, a zonal gradual change multipoint defocus type myopia prevention and control lens has a myopic refractive correction zone 5 which is a circular zone with a diameter of 9mm; the diameter d of the miniature convex lens 4 is 1mm; the micro convex lenses 4 are distributed on 13 concentric circles from the center to the edge of the lens; the 1 st to 4 th circles of miniature convex lenses 4 on the inner side form a powerful intervention area 6; the 5 th-8 th turn of the micro-convex lens 4 forms a first auxiliary buffer intervention region 71, and the 9 th-13 th turn of the micro-convex lens 4 forms a second auxiliary buffer intervention region 72; the diopters of the micro convex lenses 4 on the same circle are the same; the positive diopter of the powerful intervention region 6 is plus 3.50D, the positive diopter of the first auxiliary buffer intervention region 71 is plus 3.00D, and the positive diopter of the second auxiliary buffer intervention region 72 is plus 2.50D; the diameter difference between every two adjacent circles is 3mm, and the distance between the edges of two adjacent micro convex lenses 4 in the same circle is 0.2mm; the distribution of the specific micro convex lenses 4 is shown in the following table:
the projection area of the single miniature convex lens is as follows: (d/2) 2 *π＝0.785mm 2 ；
The projection areas of all the miniature convex lenses are as follows: 0.785 x 946= 742.987mm 2 ；
The sum of the projected areas of the powerful intervention area 6 and the auxiliary buffer intervention area 7 is: [ (46+1)/2] 2 *π-(9/2) 2
*π＝1671.327mm 2 ；
The ratio of the sum of the projection area of all the micro convex lenses 4 and the projection area of the strong interference area 6 and the auxiliary buffer interference area 7 is as follows: 742.987/1671.327 x 100 = 44.5%.
Example two
The zonal gradual change multipoint defocusing type myopia prevention and control lens has a myopic refraction correction area 5 which is a circular area with the diameter of 9mm; the diameter d of the miniature convex lens 4 is 1mm; the micro convex lenses 4 are distributed on 13 concentric circles from the center to the edge of the lens; the 1 st to 4 th circles of miniature convex lenses 4 on the inner side form a powerful intervention area 6; the 5 th-8 th turn of the micro-convex lens 4 forms a first auxiliary buffer intervention region 71, and the 9 th-13 th turn of the micro-convex lens 4 forms a second auxiliary buffer intervention region 72; the diopters of the micro convex lenses 4 on the same circle are the same; the positive diopter of the powerful intervention region 6 is plus 4.50D, the positive diopter of the first auxiliary buffer intervention region 71 is plus 4.00D, and the positive diopter of the second auxiliary buffer intervention region 72 is plus 3.50D; the diameter difference between every two adjacent circles is 2.4mm, and the distance between the edges of two adjacent micro convex lenses 4 in the same circle is 0.2mm;
the distribution of the specific micro convex lenses 4 is shown in the following table:
the projection area of the single miniature convex lens is as follows: (d/2) 2 *π＝0.785mm 2 ；
The projection areas of all the miniature convex lenses are as follows: 0.785 x 946= 649.524mm 2 ；
The sum of the projected areas of the powerful intervention area 6 and the auxiliary buffer intervention area 7 is: [ (38.8+1)/2] 2 *π-(9/2) 2
*π＝1244.102mm 2 ；
The ratio of the sum of the projection area of all the micro convex lenses 4 and the projection area of the strong interference area 6 and the auxiliary buffer interference area 7 is as follows: 742.987/1671.327 x 100 = 55.0%.
The effective defocusing area is too small in occupied ratio and can influence the effect of adjusting and intervening, and the area occupied ratio is too large and can influence wearing comfort, so that on the premise that the production process can be realized, experiments prove that the area occupied ratio is reasonably controlled between 40% and 60%.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The partitioned gradual change multipoint defocus type myopia prevention and control lens comprises a lens body (1), wherein two sides of the lens body (1) comprise an outer side surface (2) and an inner side surface (3), and the lens body (1) comprises a refraction area which is formed by curved surfaces of the outer side surface (2) and the inner side surface (3) and is used for correcting vision; micro convex lenses (4) are regularly and uniformly distributed on the surface of the outer side surface (2); the method is characterized in that: the optical center of the lens body (1) is provided with a myopia refraction correction area (5); the periphery of the myopia refraction correction area (5) is respectively formed into a powerful intervention area (6) and an auxiliary buffer intervention area (7) from the optical center to the edge of the lens by micro convex lenses (4) with different diopters; the diopter of the miniature convex lens (4) in the powerful intervention area (6) is larger than that of the miniature convex lens (4) in the auxiliary buffering intervention area (7).
2. The zonal progressive multi-point defocus myopia prevention and control lens according to claim 1, wherein: the myopia refraction correction area (5) is a circular area with the diameter of 9-10mm.
3. The zonal progressive multi-point defocus myopia prevention and control lens according to claim 1, wherein: the diameter of the miniature convex lens (4) is 0.8-1.6mm, and the positive diopter is 2.00D to 5.00D.
4. A zonal progressive multi-point defocus myopia prevention and control lens according to claim 1 or 3, wherein: the micro convex lenses (4) of the powerful intervention area (6) and the auxiliary buffer intervention area (7) are distributed in concentric circles.
5. The zonal progressive multi-point defocus myopia prevention and control lens according to claim 1, wherein: the sum of the projection areas of all the miniature convex lenses (4) in the powerful intervention area (6) and the auxiliary buffer intervention area (7) accounts for 40% -60% of the sum of the projection areas of the powerful intervention area (6) and the auxiliary buffer intervention area (7).
6. The zonal progressive multi-point defocus myopia prevention and control lens according to claim 4, wherein: the miniature convex lenses (4) are distributed on 13 concentric circles from the center to the edge of the lens; the 1 st to 4 th circles of miniature convex lenses (4) on the inner side form a powerful intervention area (6); the 5 th-13 th turn of miniature convex lens (4) forms an auxiliary buffer intervention area (7); the diopters of the micro convex lenses (4) on the same circle are the same.
7. The zonal progressive multi-point defocus myopia prevention and control lens according to claim 6, wherein: the distance between the edges of the adjacent micro convex lenses (4) is more than 0.2mm.
8. The zonal progressive multi-point defocus myopia prevention and control lens according to claim 7, wherein: the auxiliary buffer intervention zone (7) comprises a first auxiliary buffer intervention zone (71) and a second auxiliary buffer intervention zone (72), wherein the first auxiliary buffer intervention zone (71) is positioned between the powerful intervention zone (6) and the second auxiliary buffer intervention zone (72); the diopter of the miniature convex lens (4) in the first auxiliary buffer intervention region (71) is greater than that of the miniature convex lens (4) in the second auxiliary buffer intervention region (72).
9. The zonal progressive multi-point defocus myopia prevention and control lens of claim 8, wherein: the 5 th-8 th turn of micro convex lens (4) forms a first auxiliary buffer intervention area (71), and the 9 th-13 th turn of micro convex lens (4) forms a second auxiliary buffer intervention area (72).
10. A zonal progressive multi-point defocus myopia prevention and control lens according to claim 3, wherein: the positive diopter of the miniature convex lens (4) of the powerful intervention area (6) is between plus 2.50D and plus 4.50D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310303016.9A CN116125680A (en) | 2023-03-27 | 2023-03-27 | Partitioned gradual change multiple spot defocus type myopia prevention and control lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310303016.9A CN116125680A (en) | 2023-03-27 | 2023-03-27 | Partitioned gradual change multiple spot defocus type myopia prevention and control lens |
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| CN116125680A true CN116125680A (en) | 2023-05-16 |
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| CN202310303016.9A Pending CN116125680A (en) | 2023-03-27 | 2023-03-27 | Partitioned gradual change multiple spot defocus type myopia prevention and control lens |
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| CN (1) | CN116125680A (en) |
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- 2023-03-27 CN CN202310303016.9A patent/CN116125680A/en active Pending
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