CN113741060A - Spectacle lens, method for manufacturing spectacle lens, frame spectacles, and peripheral image interference device - Google Patents

Abstract

The invention provides a spectacle lens, frame glasses, a method for manufacturing the spectacle lens and a peripheral imaging interference device which are helpful for improving the myopia control effect. The spectacle lens is a peripheral myopic defocusing lens, a peripheral imaging interference area is arranged on the periphery of a central optical area, and an imaging interference part and a transparent clearance part are formed in the peripheral imaging interference area. The invention carries out regionalization and fuzzification on the peripheral part of the lens with the peripheral myopic defocus design, and in the process of autonomously selecting the fovea to be oriented to the most interesting area in the nearby range, the action mode of moving the head is changed from moving the eyes when the eyes look around due to the characteristic of fuzzy imaging of the peripheral part, thereby solving the problem of unstable defocus state caused by the rotation of the visual objects of the eyes of the lens with the peripheral defocus design, enabling the eyes and the lens system to be always in the central position, forming more stable myopic peripheral defocus and obtaining the expected myopia control effect.

Description

Spectacle lens, method for manufacturing spectacle lens, frame spectacles, and peripheral image interference device

Technical Field

The present invention relates to an eyeglass lens, a pair of frame eyeglasses, a method for manufacturing the eyeglass lens, and a peripheral image interference device.

Background

The main reason for the increase of the myopic eye degree is the lengthening of the axial length of the eye, and the degree is increased by 3.00 degrees every 1mm of the lengthening. Recent medical research has demonstrated that elongation of the eye depends on peripheral retinal defocus, which is referred to in terms of dioptric concept, fig. 1, where 10 is the retina, as indicated at 30, and that the person with focus in front of the retina is called myopic defocus, and that the person with focus behind the retina is called hyperopic defocus, as indicated at 20. The central part of the retina of the myopic eye is myopic defocus, while the periphery of the retina is hyperopic defocus, and the hyperopic defocus at the periphery of the retina is a main reason for promoting the increasing of the myopic eye degree.

The eyeball has the characteristic of inducing the development of the eyeball by depending on the imaging of the periphery of the retina, particularly the myopia of teenagers below 18 years old, if the imaging of the periphery of the retina is hyperopic defocusing, the retina tends to grow to an image point, the length of the eyeball is prolonged, and if the imaging of the periphery of the retina is myopic defocusing, the eyeball is stopped being prolonged. If the peripheral hyperopic defocus of the retina is corrected or the peripheral myopic defocus of the retina is artificially formed by a modern medical method, the continuous increase of the myopic degree can be prevented, the reason causing the peripheral defocus of the retina can be found out, and the occurrence and the development of the myopic eye can be effectively prevented.

The control mechanism for controlling the growth of teenager myopia by the myopic peripheral defocus is a relatively accepted and effective control mechanism in the field, and various technical schemes for forming the myopic peripheral defocus are formed on the basis of the control mechanism, and the technical schemes comprise orthokeratology lenses, multifocal contact lenses, peripheral defocus frame lenses and the like. Such techniques are disclosed in US7025460, CN110554515A, CN106707542B, CN110376758A, CN109946849A and the like.

In the technical schemes, the orthokeratology lens and the multifocal contact lens have a determined myopia control effect in clinic, wherein the orthokeratology lens can delay the myopia increase by about 40-60%; multifocal contact lenses can slow myopia progression by 30% to 38% and axial elongation by 31% to 51%.

The frame glasses adopting the peripheral defocusing design technology have no obvious effect, and clinical statistical results show that the influence on the axis of the eyes is not obviously different compared with the common frame glasses.

This may be related to the constant change in eye position when looking through the lens. The retina is a sheet of cells behind our eyeball. Some of these cells, called photoreceptors, are very sensitive to light. There are two main types of photoreceptors: rod cells are sensitive to differences in light and shade, and cone cells are more sensitive to color. These photoreceptors are most densely packed in a small area in the center of the retina called the "fovea". It corresponds to the center of our field of view, where the resolution is highest. The further away from the fovea, the more blurred is the detail of the field of view, the so-called peripheral vision. When we look around four weeks, we move our eyes. This allows us to orient the fovea to the region of most interest in the vicinity. These voluntary eye movements are called saccades and are done approximately three times per second. Our brain corrects the movement of the eyeball by controlling the eye muscles. Because the brain omits the information of the eyeball during movement, most of the visual world is in a fixation state, and the time period is short, about 200 and 300 milliseconds long. After investigating the data, we found that our eyes were in motion 10% to 20% of the time.

In peripheral defocus control techniques such as orthokeratology lenses and contact lenses which are synchronized with the movement of the eyeball, the movement of the eyeball does not generally change the peripheral defocus state of the optical system of the human eye relative to the formation of the retina, and thus the formed peripheral defocus for making myopia is stable. However, in the case of spectacle frames with peripheral myopic defocus designs, the defocus in the foveal and peripheral regions can be altered by movement of the eye. As shown in fig. 2, when the eyeball 100 is in an orthotopic view, because the lens 200 is designed such that the refractive power of the peripheral area is greater than that of the central area, the central ray 01 falls on the retina, and the peripheral rays 02 and 03 fall in front of the retina, thereby forming myopic peripheral defocus, which is the original design intention of the designer and is also an ideal state.

However, if the eyeball moves and the position of the spectacles relative to the frame changes, imaging is performed as shown in fig. 3, peripheral rays 02 become central rays in a new optical system, and some myopia may be formed, while rays 01, which are originally in the center, become peripheral rays in the new system, and because the power is smaller than that of the periphery, far-vision peripheral defocus may be formed. The main problem that the existing frame glasses with myopic peripheral defocus design cannot well control the myopia development is solved. The techniques described in the above patent documents and the like all have such problems and cannot produce a good myopia control effect.

Disclosure of Invention

The invention aims to provide a spectacle lens, frame glasses, a spectacle lens manufacturing method and a peripheral imaging interference device which are beneficial to improving the myopia control effect.

In order to achieve the above object, the spectacle lens of the present invention is a peripheral myopic defocus lens, wherein a peripheral image disturbance area is provided at the periphery of a central optical area, and an image disturbance portion and a transparent gap portion between different portions of the image disturbance portion are formed in the peripheral image disturbance area.

By adopting the structure, the imaging interference part is formed in the peripheral imaging interference area, so that the peripheral part of the peripheral myopic out-of-focus lens is subjected to regionalization and fuzzification, and in the process that the brain autonomously selects the fovea to be oriented to the most interesting area in the nearby range, the behavior mode of the human eyes is changed from the moving eyes to the moving head when the human eyes look around due to the characteristic of fuzzy imaging of the peripheral part, so that the problem of unstable out-of-focus state of the peripheral myopic out-of-focus lens caused by the rotation of the visual object of the human eyes is solved, the human eyes and the lens system are always in the central position, more stable myopic peripheral out-of-focus is formed, and the expected myopia control effect is obtained.

Preferably, the diameter of the central optical zone is from 5mm to 15mm or from 5mm to 10 mm.

In the invention, preferably, the peripheral imaging interference area is an area with a peripheral diameter of 5-30 mm or 10-20 mm in the central optical area.

In the present invention, the image disturbing portion is preferably formed by film pasting, coating, machining, etching, photolithography, writing or printing.

In the present invention, the image disturbing portion preferably forms a dot-shaped pattern, a lattice-shaped pattern, a plurality of concentric circular ring-shaped patterns, or a plurality of fan-shaped patterns.

In addition, the imaging interference portion may be provided on a front surface of the eyeglass lens, may be provided on a rear surface, or may be provided on both surfaces.

In addition, the invention also relates to frame glasses, which have the spectacle lenses with any one of the structures.

The present invention also relates to a method for manufacturing an eyeglass lens, the eyeglass lens being a peripheral myopic defocus lens, a peripheral image disturbance area being provided on the periphery of a central optical area, an image disturbance portion and a transparent gap portion being formed between different portions of the image disturbance portion in the peripheral image disturbance area, the method comprising: a. obtaining a raw material lens with a peripheral myopic defocusing structure; b. forming the peripheral imaging interference zone at the periphery of the acquired central optical zone of the raw material lens.

In the present invention, preferably, in the step b, the peripheral image interference region is formed by film pasting, coating, machining, etching, photolithography, painting, or printing.

In addition, the invention also relates to a peripheral imaging interference device which is used in combination with a peripheral myopic out-of-focus lens and is provided with a transparent central area and a peripheral area positioned at the periphery of the central area, wherein the peripheral area is provided with an imaging interference part and a transparent gap part positioned between different parts of the imaging interference part.

Preferably, the peripheral image disturbing device includes a sheet having the central region and the peripheral region.

Preferably, the sheet material is a film patch.

Preferably, the central region has a diameter of 5mm to 15mm or 5mm to 10 mm.

Preferably, the peripheral area is an area with the diameter of 5-30 mm or 10-20 mm of the periphery of the central area.

The image disturbing part of the peripheral image disturbing means may be formed by means of film pasting, coating, machining, etching, photolithography, writing or printing.

Drawings

FIG. 1 is an explanatory diagram of myopic defocus and hyperopic defocus;

FIG. 2 is an explanatory diagram of myopic peripheral defocus formed when the eyeball is in normal position;

FIG. 3 is an explanatory diagram of the disturbance of defocus caused by deviation of eyeball;

fig. 4 is an explanatory view of an example of a pattern formed by the imaging interference portion.

Detailed Description

< first embodiment >

The present embodiment relates to spectacle lenses (also simply referred to as lenses) for frame spectacles, and frame spectacles having the spectacle lenses, in which a peripheral image disturbance area is provided on the outer periphery of a central optical area in addition to a lens having a peripheral myopic defocus structure. The diameter of the imaging area corresponding to the pupil of the central optical area is 5mm to 15mm, preferably 5mm to 10mm, and the central optical area plays a role in clear imaging. The peripheral imaging interference area is an area with the diameter of 5-30 mm, preferably 10-20 mm, outside the central optical area, and has patterns formed by imaging interference parts, and the imaging interference parts play a role in interfering the continuous and clear imaging of the periphery of the lens and preventing human eyes from staring at the peripheral area directly for imaging. The imaging interference part can be integrally formed into patterns, letters, lines and the like in various shapes. The pattern of the peripheral imaging interference regions may be regular or irregular. The shape of the imaging interference part itself can also be designed freely, for example, in the form of dots, squares, diamonds, etc.

An example of a pattern formed by the imaging interference portion is shown in fig. 4. In fig. 4 a, a plurality of image disturbing portions are dot-shaped and arranged in a staggered matrix. In the figure, the same applies to B to F in fig. 4, in that the circular blank region located at the center corresponds to the central optical zone. In fig. 4B, a plurality of image disturbing portions are dotted and arranged in a lattice shape. In fig. 4C, a plurality of imaging interference portions are rhomboid and arranged in a lattice shape as a whole. In fig. 4D, the imaging interference portion is a circular ring, and a plurality of imaging interference portions are concentrically arranged. In fig. 4E, the image disturbing portion is a fan-shaped portion, and a plurality of the image disturbing portions are arranged in the circumferential direction. In fig. 4F, the imaging interference portion is heart-shaped, and a plurality of imaging interference portions are arranged in the circumferential direction. In fig. 4 a-F, there are a plurality of independent discontinuous imaging disturbances, however, the present invention is not limited thereto, and the imaging disturbances may be one continuous portion, for example, as shown in fig. 4G.

The overall pattern formed by the image disturbing portion cannot be completely continuous and opaque, i.e. in the peripheral image disturbing area, there is a transparent gap portion between different portions of the image disturbing portion. The transparent gap part can be used for peripheral light rays to pass through and form an image at a position outside the fovea of the retina, so that peripheral defocusing is formed.

The "different portions of the imaging interference portion" referred to herein includes both the meaning between different portions of the plurality of imaging interference portions and the meaning between different portions of one imaging interference portion.

The imaging interference part of the peripheral imaging interference area can be transparent, opaque or colored. The pattern of the peripheral imaging interference area can be achieved by film pasting, coating, machining, etching, photoetching, painting, printing and dyeing and the like, and can also be achieved by changing the refractive index, light transmittance and the like of the lens material in the peripheral imaging interference area, and the modes can also be referred to as the mode of forming the imaging interference part. In the method using the film patch, the film patch may be cut into a shape corresponding to each image interference portion and attached to the eyeglass lens, or the film patch may be cut into a shape substantially corresponding to the eyeglass lens, and the image interference portion may be formed on the film patch by coating, machining (engraving or the like), etching, photolithography, painting, printing, or the like.

In addition, coating, machining, etching, photolithography, painting, printing, etc. may be applied directly to the ophthalmic lens, and the image disturbing portion may be formed directly on the ophthalmic lens without the need for a film patch.

The imaging interference part is preferably in a slightly frosted and semitransparent pattern or pattern, and in this way, the imaging interference part can play a role of optical interference and is not easy to be found by naked eyes to have obvious appearance difference with a common lens.

In addition, an imaging interference portion may be provided on the front surface of the lens, an imaging interference portion may be provided on the rear surface of the lens, or both surfaces.

< example 1>

(1) Lens parameters: peripheral defocus controlled frame glasses were made in the manner described in US7025460, with a lens consisting of front and back surfaces, a central lens thickness of 3mm, a material refractive index of 1.517, a back surface curvature radius of 75mm, an aspheric front surface curvature radius of 134.6, and a surface shape satisfying the equation s ═ a₁*x²+a₂*x⁴+a₃*x⁶Where s is the axial height (in mm) of the apex from different positions on the anterior surface, x is the position in the diameter direction of the lens, in mm, a₁＝0.003312,a₂＝2.053*10^-6,a₃＝-6.484*10^-9. The lens will correct myopia for patients with myopic power-3D and provide myopic peripheral defocus in the emmetropic position.

(2) The method comprises the steps of coating 4 circles with chemical materials with the center of an optical area as the center, wherein the diameter of the circles is 10-11 mm, the diameter of the circles is 12-13 mm, the diameter of the circles is 14-15 mm, and the circles are 16-17 mm, after chemical corrosion is completed, the chemical materials are washed away, 4 annular imaging interference parts are left on a chemical corrosion area of a lens and are in a ground glass shape, therefore, a peripheral imaging interference area is formed beyond the diameter of 10mm, and objects can still be clearly seen within 10mm of the center. As shown at D in fig. 4. The erosion points may be on the front lens surface, the back lens surface, or both.

After the lens is processed, an optical area for clear imaging is still formed within 10mm of the center, human eyes can normally see objects through the area, a peripheral myopic defocusing area is corroded by chemical materials to form a separated optical area (namely a peripheral imaging interference area is formed in the myopic defocusing area), so that the human eye imaging is interfered, the human eyes cannot directly see the objects through the peripheral area, clear images cannot be obtained when eyeballs rotate, the brain can actively adjust a mode of gazing the defocusing objects into head rotation after judgment, and the glasses and the eyes keep consistent angles at any time, so that a human eye-lens system is always in a centered position, and the myopic periphery when the eyes are corrected is realized.

< example 2>

(1) Lens parameters: peripheral defocus controlled frame glasses were made in the manner of CN106707542B, with lenses consisting of front and back surfaces, an overall lens diameter of 80mm, a center thickness of 3mm, and a material refractive index of 1.55. The radius of curvature of the front surface of the optical zone is 7.724, the radius of curvature of the back surface is 5.954, the back surface is aspheric, and the surface form expression is as follows:

wherein c is the reciprocal of the curvature radius of the basic spherical surface of the optical part, y is the vertical distance between any point on the curve and the abscissa axis (Z), Q is an aspheric coefficient, A2i is an aspheric high-order term coefficient, and the aspheric surface is obtained by the aspheric curve through rotationally symmetrical change around the abscissa axis (Z). The lens parameters are shown in table 1.

Table 1 example 2 lens parameters

Refractive index

Ra

Rp

Qp

A4

A6

A8

1.55

7.724

5.954

-0.157

-2.029E-04

-2.378E-06

-9.978E-08

(2) And (3) manufacturing 26 film patches in the shape of E in fig. 4, wherein the film patches are opaque or semitransparent and are in the shape of an isosceles triangle with the height of 10mm and the width of the bottom edge of 1mm, and the film patches are radially pasted within 10mm-20mm outside the optical area to block the continuous imaging of the periphery, but the discontinuous areas of the periphery can transmit light, so that the myopic defocused image of the periphery is imaged in eyes. The film patches may be attached to the front surface of the lens, to the back surface of the lens, or distributed on both surfaces.

After the lens is processed, the optical area (namely the central optical area) of clear imaging is still within 10mm of the center, human eyes can normally see objects through the area, the near-sighted out-of-focus area positioned at the periphery of the central optical area is blocked by the film patch to form a blocked optical area (namely, a peripheral imaging interference area is formed in the near-sighted out-of-focus area), so that the human eyes are interfered, the objects cannot be directly seen through the peripheral area, when eyeballs rotate, complete images cannot be obtained, after judgment, the brain can actively adjust the mode of gazing objects into head rotation, and the glasses and the eyes keep a consistent angle at any time, so that a human eye-lens system can be always in a centered position, and near-sighted peripheral out-of-focus when the eyes are aligned is realized.

In addition to the lens structures disclosed in US7025460 and CN106707542B, the technical means of the present embodiment can also be applied to other peripheral myopic out-of-focus lenses, such as lenses disclosed in other patent documents mentioned in the background. The detailed description of the structure is omitted by reference to the literature reference numbers, and therefore, the lens structures disclosed in these patent documents are also disclosed in the present application without conflict.

By adopting the embodiment, the myopia control effect of the frame glasses with the peripheral defocusing structures can be improved.

Specifically, in the present embodiment, the peripheral portion of the lens having the peripheral myopic defocus design is subjected to area blurring and sectioning, in the process of the brain automatically selecting the fovea to be oriented to the most interesting area in the visual field range, because the peripheral parts are blurred or cannot form the characteristics of enough size and continuous images, when the human eyes look around, peripheral light is interfered, when the eyeballs rotate, clear images cannot be obtained, and after the brain judges, the mode of the staring things can be actively adjusted to be head rotation, the glasses and the eyes keep a consistent angle at any time, the eye-lens system can be always in a central position, therefore, the problem that the out-of-focus state of the lens with the peripheral out-of-focus design is unstable when the human eye looks at the object to rotate is solved, more stable near-sighted peripheral out-of-focus is formed, and the expected near-sight control effect is obtained.

In addition, the present embodiment can also obtain technical effects of various forms, easy implementation, and low cost.

Specifically, the price of the peripheral out-of-focus lens is generally high, but the embodiment is easy to implement and low in cost, and the cost of the peripheral out-of-focus lens cannot be greatly increased. In addition, the lens provided by the embodiment has various forms and textures, and can be adjusted according to the economic condition, the implementation condition and the personal preference of a wearer.

< second embodiment >

The present embodiment relates to a method of manufacturing the eyeglass lens and the frame type eyeglasses in the first embodiment. The same portions as those in the first embodiment will not be described in detail.

The manufacturing method of the present embodiment includes the steps of: a. acquiring an ophthalmic lens (original lens) having a peripheral myopic defocus structure; b. a peripheral imaging interference zone is formed at the periphery of the central optical zone of the ophthalmic lens. The diameter of the imaging area corresponding to the pupil of the central optical area is 5mm to 15mm, preferably 5mm to 10mm, and the central optical area plays a role in clear imaging. The imaging interference area is 5-30 mm, preferably 10-20 mm, outside the central optical area, and has the functions of interfering the continuous and clear imaging of the periphery of the lens and preventing human eyes from staring at the peripheral area to form an image. The interference zone can be patterns, letters, lines and the like with different shapes. The pattern of the interference area can be regular or irregular; gaps exist among the interference patterns, the interference patterns cannot be completely continuous and shielded, and the gaps among the interference areas can be used for peripheral light rays to pass through and form images to positions outside the fovea of the retina, so that peripheral defocusing is formed. The interference pattern of the interference area can be transparent, opaque or different in color. The pattern of the interference area can be achieved by film pasting, coating, machining, etching, photoetching, painting, printing and dyeing and the like, and can also be achieved by changing the refractive index, light transmittance and the like of the lens material in the interference area.

< third embodiment >

The present embodiments relate to a peripheral imaging interference device for eyeglasses for use in conjunction with lenses having peripheral myopic defocus structures. The peripheral image disturbing means may be, for example, a film patch on which a pattern such as that shown in fig. 4 is formed, that is, a film patch on which a central region and a peripheral region located at the periphery of the central region are provided, the central region being transparent, and the peripheral region being provided with an image disturbing portion and a transparent gap portion located between different portions of the image disturbing portion. The term "transparent" as used herein can be realized by a transparent material or by making openings in the film, i.e., in the transparent region, a transparent material may or may not be present.

The structure and formation of the image disturbing portion can be similar to those described in the first embodiment without conflict.

In addition, the central area of the peripheral image disturbing means may be dimensioned to coincide with the central optical zone in the first embodiment, i.e. to have a diameter in the range of 5mm to 15mm, preferably 5mm to 10 mm. The peripheral area is an area with the diameter of 5-30 mm, preferably 10-20 mm, of the periphery of the central area.

In addition, the peripheral image interference device may be formed by other methods, such as other sheets of paper, glass sheets, or other shaped members, besides the film patch method. In addition, the combination of the peripheral image interference device and the spectacle lens can adopt other connecting modes besides the pasting mode, for example, the peripheral image interference device can be provided with a clamping mechanism to clamp the sheet and the spectacle lens.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

For example, although the frame glasses are the preferred application direction of the invention, the invention is not limited to the frame glasses, and for human eyes, if the method for controlling the myopia by peripheral defocus is adopted, and the human eyes can not guarantee to keep synchronization with the lenses, the method can be adopted to intervene to improve the myopia control effect. For example, although most contact lenses synchronize well with eye movement, contact lenses with smaller diameters or greater movement on the eye may have similar problems as frame lenses. The method of the present invention can thus also be used in out-of-focus controlled contact lens designs.

Claims (15)

1. An eyeglass is a peripheral myopic defocus eyeglass, which is characterized in that a peripheral imaging interference area is arranged on the periphery of a central optical area, and an imaging interference part and a transparent gap part positioned between different parts of the imaging interference part are formed in the peripheral imaging interference area.

2. The ophthalmic lens according to claim 1, characterized in that the diameter of the central optical zone is 5 to 15mm or 5 to 10 mm.

3. The ophthalmic lens of claim 2, wherein the peripheral image disturbance zone is an area of 5-30 mm or 10-20 mm of peripheral diameter of the central optical zone.

4. The ophthalmic lens of any one of claims 1 to 3, wherein the image disturbing portion is formed by means of film pasting, coating, machining, etching, photolithography, writing or printing.

5. The spectacle lens according to any one of claims 1 to 3, wherein the image disturbing portion constitutes a lattice-like pattern, a plurality of concentric circular ring-like patterns, or a plurality of fan-like patterns.

6. The ophthalmic lens according to any one of claims 1 to 3, characterized in that the imaging interference portion is provided on the front and/or rear surface of the ophthalmic lens.

7. Framed spectacles having an ophthalmic lens according to any one of claims 1 to 6.

8. A method for manufacturing an eyeglass, wherein the eyeglass is a peripheral myopic defocus eyeglass, a peripheral image disturbance area is provided on the periphery of a central optical area, an image disturbance portion and a transparent gap portion between different portions of the image disturbance portion are formed in the peripheral image disturbance area,

the manufacturing method comprises the following steps:

a. obtaining a raw material lens with a peripheral myopic defocusing structure;

b. forming the peripheral imaging interference zone at the periphery of the acquired central optical zone of the raw material lens.

9. The method for manufacturing an ophthalmic lens according to claim 8,

in the step b, the peripheral image interference region is formed by film pasting, coating, machining, etching, photoetching, painting or printing.

10. A peripheral imaging interference device for use in conjunction with a peripheral myopic out-of-focus lens having a transparent central region and a peripheral region located peripherally to said central region, in said peripheral region having an imaging interference portion and a transparent gap portion between different portions of the imaging interference portion.

11. The peripheral image interference apparatus of claim 10, comprising a sheet having the central region and the peripheral region.

12. The peripheral image interference apparatus of claim 11, wherein the sheet is a thin film patch.

13. The peripheral image interference apparatus according to any of claims 10 to 12, wherein the central region has a diameter of 5mm to 15mm or 5mm to 10 mm.

14. The peripheral image interference device of claim 13, wherein the peripheral region is a region with a peripheral diameter of 5-30 mm or 10-20 mm of the central region.

15. The peripheral image interference device according to any of claims 10 to 12, wherein the image interference portion is formed by means of thin film pasting, coating, machining, etching, photolithography, writing or printing.

Images