CN116125680B - 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 lensInfo
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- CN116125680B CN116125680B CN202310303016.9A CN202310303016A CN116125680B CN 116125680 B CN116125680 B CN 116125680B CN 202310303016 A CN202310303016 A CN 202310303016A CN 116125680 B CN116125680 B CN 116125680B
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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
- G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive
- G02C7/061—Spectacle lenses with progressively varying focal power
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- Ophthalmology & Optometry (AREA)
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Abstract
The invention discloses a partitioned gradual change multipoint defocusing type myopia prevention and control lens which comprises a lens body, wherein two sides of the lens body comprise an outer side face and an inner side face, the lens body comprises a vision correcting refractive area which is formed by curved surfaces of the outer side face and the inner side face, micro convex lenses are regularly and uniformly distributed on the surface of the outer side face, a myopia refraction correcting area is arranged at the optical center of the lens body, powerful intervention areas and auxiliary buffer intervention areas are respectively formed by micro convex lenses with different diopters from the optical center to the edge of the lens, and the diopter of the micro convex lenses in the powerful intervention areas is larger than that of the micro convex lenses in the auxiliary buffer intervention areas. The invention has the beneficial effects that the lens is divided into the central far-use clear zone, the powerful intervention zone and the auxiliary buffer intervention zone by the distribution of the miniature convex lenses with different diopters, and the myopia defocus intervention and the auxiliary intervention respectively applied to the retina by the powerful intervention zone can effectively control the deepening of the myopic degree.
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 performed within 15 degrees of the visual angle from the fovea of the macula retinae, a larger defocus amount is adopted, the best effect is achieved, and auxiliary intervention is required to be performed within 15-20 degrees of the visual angle from the fovea of the macula retinae.
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 solve the problems in the prior art and provides a partitioned gradual change multi-point defocus type myopia prevention and control lens, which is used for effectively preventing and controlling myopia by reasonably setting the quantity distribution and defocus amount of the micro convex lenses of the defocus lens.
The technical scheme is that the partitioned gradual change multipoint defocus myopia prevention and control lens comprises a lens body, wherein two sides of the lens body comprise an outer side face and an inner side face, the lens body comprises a vision correcting refractive area formed by curved surfaces of the outer side face and the inner side face, micro convex lenses are regularly and uniformly distributed on the surface of the outer side face, a myopia refraction correction area is arranged at the optical center of the lens body, powerful intervention areas and auxiliary buffer intervention areas are respectively formed by micro convex lenses with different diopters from the optical center to the edge of the lens at the periphery of the myopia refraction correction area, and the diopter of the micro convex lenses in the powerful intervention area is larger than that of the micro convex lenses 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 +2.00D to +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, and if the diameter of the micro convex lens is large, particularly when the diameter of the micro convex lens is larger than the diameter of the pupil, the light transmission is large, imaging is performed, an image jump phenomenon is generated, and the visual experience is poor. Due to individuation difference, the defocus amount is influenced by the eye axis, cornea curvature and adjusting force of a wearer, namely, the positive diopter can be controlled between +2.00D and +5.00D, so that the function of individuation myopia intervention wearing 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 micro convex lenses are distributed on 13 concentric circles from the center to the edge of the lens, the 1 st to 4 th circles of micro convex lenses on the inner side form a powerful interference area, the 5 th to 13 th circles of micro convex lenses form an auxiliary buffer interference area, and the diopters of the micro 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 region, the auxiliary buffer intervention region comprises a first auxiliary buffer intervention region and a second auxiliary buffer intervention region, the first auxiliary buffer intervention region is positioned between the powerful intervention region and the second auxiliary buffer intervention region, and the diopter of the miniature convex lens in the first auxiliary buffer intervention region is larger than that 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 zone is between +2.50D and +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, and the defocus amount of the auxiliary buffer intervention area is reduced step by step.
The invention has the beneficial effects that the lens is divided 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, the powerful intervention area is used for performing powerful intervention on myopia defocus applied within 15 degrees of the angle of view from the central fovea of the macula of the retina, and the auxiliary buffer intervention area is used for performing auxiliary intervention within 15-20 degrees of the angle of view from the central fovea of the macula of the retina, so that the deepening of myopia degree can be effectively controlled, the defocus of the powerful intervention area can be individually set due to the influence of the eye axis, cornea curvature and adjusting force of a wearer, and simultaneously the defocus of the auxiliary buffer intervention area is gradually reduced, thereby meeting the individual requirements of myopic patients.
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, the zoned gradual change multi-point defocus type myopia prevention and control lens comprises a lens body 1, wherein two sides of the lens body 1 comprise an outer side face 2 and an inner side face 3, the lens body 1 comprises a refraction area for correcting vision, which is formed by curved surfaces of the outer side face 2 and the inner side face 3, micro convex lenses 4 are regularly and uniformly distributed on the surface of the outer side face 2, a myopia refraction correction area 5 is arranged at the optical center of the lens body 1, a powerful intervention area 6 and an auxiliary buffer intervention area 7 are respectively formed from the optical center to the lens edge of the micro convex lenses 4 with different diopters at the periphery of the myopia refraction correction area 5, and diopters of the micro convex lenses 4 in the powerful intervention area 6 are larger than diopters of the micro convex lenses 4 in the auxiliary buffer intervention area 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 enhance the discrete buffer intervention effect of the auxiliary buffer intervention region, the auxiliary buffer intervention region 7 comprises a first auxiliary buffer intervention region 71 and a second auxiliary buffer intervention region 72, wherein the first auxiliary buffer intervention region 71 is positioned between the powerful intervention region 6 and the second auxiliary buffer intervention region 72, and the diopter of the miniature convex lens 4 in the first auxiliary buffer intervention region 71 is larger than that 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, the zone-type gradual change multi-point defocus type myopia prevention and control lens is characterized in that a myopia refraction correction area 5 is a circular area with the diameter of 9mm, the diameter D of each micro 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 micro convex lenses 4 of the 1 st to 4 th circles on the inner side form a powerful intervention area 6, the micro convex lenses 4 of the 5 th to 8 th circles form a first auxiliary buffering intervention area 71, the micro convex lenses 4 of the 9 th to 13 th circles form a second auxiliary buffering intervention area 72, the diopters of the micro convex lenses 4 on the same circle are the same, the positive diopters of the powerful intervention area 6 are +3.50D, the positive diopters of the first auxiliary buffering intervention area 71 are +2.50D, the difference of the diameters between adjacent circles is 3mm, and the distance between the edges of the two adjacent micro convex lenses 4 of 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 (d/2) 2*p=0.785mm2;
The projection area of all the micro convex lenses is 0.785 x 946= 742.987 mm 2;
The sum of projection areas of the powerful intervention area 6 and the auxiliary buffer intervention area 7 is [ (46+1)/2 ] 2*p-(9/2)2*p=1671.327 mm2;
The ratio of the sum of the projected areas of all the micro-convex lenses 4 and the projected areas of the strong intervention area 6 and the auxiliary buffer intervention area 7 is 742.987/1671.327 x 100=44.5%.
Example two
The zoned gradual change multipoint defocus type myopia prevention and control lens is characterized in that a myopia refraction correction area 5 is a circular area, the diameter is 9mm, the diameter D of each miniature convex lens 4 is 1mm, the miniature convex lenses 4 are distributed on 13 concentric circles from the center to the edge of the lens, miniature convex lenses 4 of 1 st to 4 th circles on the inner side form a powerful intervention area 6, miniature convex lenses 4 of 5 th to 8 th circles form a first auxiliary buffering intervention area 71, miniature convex lenses 4 of 9 th to 13 th circles form a second auxiliary buffering intervention area 72, the diopters of the miniature convex lenses 4 on the same circle are the same, the positive diopters of the powerful intervention area 6 are +4.50D, the positive diopters of the first auxiliary buffering intervention area 71 are +4.00D, the difference between the diameters of two adjacent circles is 2.4mm, and the distance between the edges of the two miniature convex lenses 4 on 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 (d/2) 2*p=0.785mm2;
The projection area of all the micro convex lenses is 0.785 x 8237= 649.195mm 2;
The sum of projection areas of the powerful intervention area 6 and the auxiliary buffer intervention area 7 is [ (38.8+1)/2 ] 2*p-(9/2)2*p=1180.485 mm2;
the ratio of the sum of the projected areas of all the miniature convex lenses 4 and the projected areas of the powerful intervention region 6 and the auxiliary buffer intervention region 7 is 649.195/1180.485 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 (6)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310303016.9A CN116125680B (en) | 2023-03-27 | 2023-03-27 | Partitioned gradual change multiple spot defocus type myopia prevention and control lens |
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| CN202310303016.9A CN116125680B (en) | 2023-03-27 | 2023-03-27 | Partitioned gradual change multiple spot defocus type myopia prevention and control lens |
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| CN116125680B true CN116125680B (en) | 2025-10-17 |
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| CN219417914U (en) * | 2023-03-27 | 2023-07-25 | 江苏汇鼎光学眼镜有限公司 | Partitioned gradual change multiple spot defocus type myopia prevention and control lens |
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| US11768386B2 (en) * | 2018-01-22 | 2023-09-26 | Johnson & Johnson Vision Care, Inc. | Ophthalmic lens with an optically non-coaxial zone for myopia control |
| CN114911071B (en) * | 2021-02-10 | 2023-10-20 | 菲特兰有限公司 | Ophthalmic lenses for preventing myopia or slowing the progression of myopia |
| CN215494400U (en) * | 2021-06-09 | 2022-01-11 | 苏州明世光学科技有限公司 | Myopia out-of-focus spectacle lens with superposed micro-lenses |
| CN216411773U (en) * | 2021-12-15 | 2022-04-29 | 江苏汇鼎光学眼镜有限公司 | Variable buffer focusing type myopia prevention and control lens |
| CN217739645U (en) * | 2022-04-16 | 2022-11-04 | 江苏圣谱光学技术有限公司 | A curve gradient multi-point defocus lens |
| CN115032816B (en) * | 2022-06-29 | 2025-10-17 | 浙江伟星光学股份有限公司 | Composite full-focus lens for delaying progression of hyperopia |
| CN218240583U (en) * | 2022-10-26 | 2023-01-06 | 江苏明世光学科技有限公司 | Compound clitellum out of focus lens and glasses |
| CN115793278A (en) * | 2022-11-16 | 2023-03-14 | 刘殿忠 | Lens and have its glasses |
| CN115793280A (en) * | 2022-11-24 | 2023-03-14 | 苏州亮宇模具科技有限公司 | Peripheral out-of-focus myopia prevention and control lens |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114280816A (en) * | 2022-01-27 | 2022-04-05 | 丹阳市精通眼镜技术创新服务中心有限公司 | A kind of myopia prevention and control mirror based on lens meter array |
| CN219417914U (en) * | 2023-03-27 | 2023-07-25 | 江苏汇鼎光学眼镜有限公司 | Partitioned gradual change multiple spot defocus type myopia prevention and control lens |
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