CN117233981A - Ophthalmic lenses and frame glasses with reduced local imaging contrast - Google Patents
Ophthalmic lenses and frame glasses with reduced local imaging contrast Download PDFInfo
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- CN117233981A CN117233981A CN202210635347.8A CN202210635347A CN117233981A CN 117233981 A CN117233981 A CN 117233981A CN 202210635347 A CN202210635347 A CN 202210635347A CN 117233981 A CN117233981 A CN 117233981A
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- 238000003384 imaging method Methods 0.000 title claims abstract description 27
- 230000002829 reductive effect Effects 0.000 title claims abstract description 18
- 239000011521 glass Substances 0.000 title abstract description 6
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 9
- 208000014733 refractive error Diseases 0.000 claims abstract description 6
- 238000002834 transmittance Methods 0.000 claims description 9
- 238000004043 dyeing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
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- 208000001491 myopia Diseases 0.000 abstract description 16
- 230000004379 myopia Effects 0.000 abstract description 14
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- 230000000694 effects Effects 0.000 abstract description 5
- 230000002265 prevention Effects 0.000 abstract description 3
- 230000002207 retinal effect Effects 0.000 abstract description 3
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Abstract
The present application provides an ophthalmic lens with reduced local imaging contrast and frame glasses. The ophthalmic lens is a frame lens having a first refractive zone, a second refractive zone, and a light dispersing zone, wherein: the first refractive region has a prescribed refractive power for correcting refractive errors of the eye, the second refractive region is composed of a plurality of microlenses, each microlens has an adjusted refractive power different from the prescribed refractive power and is distributed near a central portion of the lens, and the light dispersing region is for reducing imaging contrast of the peripheral retina. Compared with a large-range blurring processing lens, the application improves the retinal imaging contrast of the area outside the preset specific visual field, has no influence on the peripheral visual field of the user, protects the safety of the user, and has stronger myopia prevention and control effect through compounding blurring processing and micro-lens myopia defocusing effect in the specific visual field range.
Description
Technical Field
The application relates to the technical field of ophthalmic lenses, in particular to an ophthalmic lens with reduced local imaging contrast and frame glasses.
Background
Myopia is a refractive error caused by the combined action of environmental and genetic factors, and has a high incidence. Uncontrolled myopia progression has a higher probability of developing a high degree of myopia.
Studies have shown that when the focal point is positioned behind the retina, it is possible to promote the growth of the eye axis, and myopia is formed if the eye axis grows at a too high rate, resulting in external parallel rays entering the eye and focusing only in front of the retina, and it has been proposed that the progression of myopic refractive errors can be controlled by positioning the focal point in front of the retina. Myopia progression is controlled, for example, by increasing the refractive power of a localized area of the myopic lens to focus light transmitted through that area of the lens in front of the retina of the eye, thereby creating myopia defocus.
At the same time, another myopia prevention and control theory is emerging, which considers that high retinal imaging contrast promotes eye growth, and thus decreasing the contrast of the image in the retina will slow down the eye axis growth, thereby inhibiting myopia progression. Preliminary clinical trials have shown that ophthalmic lenses that can control myopia progression by modulating peripheral contrast without affecting on-axis vision (Novel DOT Lenses from SightGlass Vision Show Great Promise to Fight Myopia, joe Rappon et al, april 21,2020,Review of Myopia Management). However, when the patient uses glasses with a completely blurred peripheral field, the patient may feel visually uncomfortable, and the patient's ability to perceive the surrounding environment may be reduced. Such as the ability to determine the position of a step in a dim environment, and the ability to alert a vehicle moving rapidly around. Thus, ophthalmic lenses with reduced local imaging contrast would be a more preferred option.
However, the reduction in the area of the blur area can greatly affect its myopia control capability, and thus, there is a need to improve upon the prior art by proposing an ophthalmic lens with excellent myopia control effects without significantly affecting the local imaging contrast reduction of the wearer's visual perception.
Disclosure of Invention
The present application aims to provide an ophthalmic lens for local imaging contrast reduction and frame glasses.
The present application provides an ophthalmic lens with reduced local imaging contrast, the ophthalmic lens being a frame lens having a first refractive region, a second refractive region and a light dispersing region, wherein: the first refractive region has a prescribed refractive power for correcting refractive errors of the eye, the second refractive region is composed of a plurality of microlenses, each microlens has an adjusting refractive power different from the prescribed refractive power and is distributed near a central portion of the lens, and the light dispersion region is for reducing imaging contrast of the peripheral retina.
Optionally, the light dispersing region and/or the second refractive region are formed inside a specific field of view, which refers to: an annular region having an inner diameter D1 and an outer diameter D2 centered on the center of the lens, wherein the inner diameter D1 is selected from 8.0 to 10.0mm and the outer diameter D2 is selected from 12.0 to 40.0mm.
Optionally, the difference between the adjusted optical power and the prescribed optical power is 1.5 to 10D, or 2.5 to 5D.
Optionally, the light scattering area is a patterned area; or a rough surface area; or regions containing inclusions of different refractive indices.
Optionally, at least two of the plurality of microlenses are spaced apart from each other, thereby forming a microlens gap, and the light dispersing region covers the microlens gap.
Optionally, the light dispersing region further covers at least a portion of the second refractive region, and the plurality of microlenses are located on a different surface of the ophthalmic lens than the light dispersing region.
Optionally, the plurality of microlenses is configured as a plurality of microlens concentric rings, and the light-dispersing region is configured as at least one annulus between at least two of the plurality of microlens concentric rings.
Optionally, a wavelength selective region is further included, the wavelength selective region being configured to increase the transmittance of red light waves or decrease the transmittance of blue light waves.
Optionally, the wavelength selective region partially coincides with or completely coincides with the second refractive region.
Optionally, in the wavelength selective region: and the position of the second refraction area is provided with a red light wave anti-reflection film, and/or the position outside the second refraction area adopts a dyeing material to reduce the transmittance of blue light waves.
The application also proposes a frame spectacle comprising an ophthalmic lens as described above.
The ophthalmic lens with reduced local imaging contrast only carries out blurring processing on the lens locally, improves the retinal imaging contrast of the area outside the preset specific visual field, has no influence on the peripheral visual field of a user, and protects the safety of the user compared with a large-range blurring processing lens (such as a SightGlass lens). Meanwhile, the lens has stronger myopia prevention and control effect through the compound blurring treatment and the micro-lens myopia defocus effect in a specific visual field range.
Drawings
FIG. 1 is a schematic illustration of a light-dispersing area of an ophthalmic lens with reduced local imaging contrast in accordance with an embodiment of the present application;
FIG. 2 is a schematic view of a first embodiment of a localized imaging contrast reduced ophthalmic lens of the present application;
FIG. 3 is a schematic view of a ophthalmic lens with reduced local imaging contrast in accordance with a second embodiment of the present application;
FIG. 4 is a schematic view of an ophthalmic lens with reduced local imaging contrast in accordance with a third embodiment of the present application;
FIG. 5 is a schematic view of a fourth embodiment of a localized imaging contrast reduced ophthalmic lens of the present application;
FIG. 6 is a schematic view of a fifth embodiment of a localized imaging contrast reduced ophthalmic lens of the present application;
fig. 7 is a schematic view of an ophthalmic lens with reduced local imaging contrast in accordance with a sixth embodiment of the present application.
In the figure: 1-a first refractive zone; 2-a second refractive zone; 3-light-dispersing areas; 4-wavelength selective region.
Detailed Description
Exemplary embodiments of the present application will be described below with reference to the accompanying drawings. Unless defined otherwise, all technical and/or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
An ophthalmic lens of an embodiment of the present application having reduced local imaging contrast has a first refractive region, a second refractive region, and a light dispersing region. The first refractive region has a prescribed refractive power for correcting refractive errors of the eye, the second refractive region is composed of a plurality of microlenses, each microlens has an adjusted refractive power different from the prescribed refractive power and is distributed near a central portion of the lens, and the light dispersing region is for reducing imaging contrast of the peripheral retina.
Wherein when the ophthalmic lens is an ophthalmic lens having a function of inhibiting the progression of myopia, the second refractive region has a refractive power obtained by adding a positive refractive power to the first refractive power, such that incident light passing through the second refractive region is focused in front of the retina to form myopia defocus.
There are two schemes to make the refractive power of the first refractive region different from that of the second refractive region: (1) The optical power of the second refractive region is made different from the optical power of the first refractive region by making the surface shape of the second refractive region different from (e.g., more convex than) the surface shape of the first refractive region. (2) By making the second refractive region of a different material than the first refractive region, the second refractive region has a refractive power that is different from the refractive power of the first refractive region.
It should be noted that the plurality of microlenses in the second Qu Guangou domain may be spaced apart from each other, or may be tangential to each other or partially overlap. In some embodiments, the area of the single second refractive region is selected from 0.20mm 2 To 3.14mm 2 . When the projection of the second refractive zone is circular, i.e. the diameter of the circle is 0.5mm to 2.0mm. In still other embodiments, the projection of the second refractive region may be other shapes, such as an oblate circle or a polygon, in which case the largest dimension of the second refractive region is selected from 0.5mm to 2.0mm. In some embodiments, the area of the second refractive region corresponds to 20% to 60% of the total area of the second refractive region and the first refractive region.
In all embodiments of the application, the light scattering area is constrained within a particular field of view. Fig. 1 schematically illustrates the locations in an ophthalmic lens corresponding to a particular field of view. As can be inferred from the figure, the specific field of view is an annular region of inner diameter D1 and outer diameter D2, as seen from the front of the lens, which occupies neither the central position nor the most peripheral position of the lens. The specific field of view refers to the 5-50 degree viewing angle range, preferably 10-20 degree viewing angle range, from the fovea of the macula. Low contrast stimuli in this field of view are believed to be more effective in retarding ocular axis elongation. In some embodiments, the inner diameter D1 is selected from 8.0 to 10.0mm, e.g., 8.5mm, 9.0mm, 9.5mm, 10mm, or any value therebetween. In some embodiments, the outer diameter D2 is selected from 12.0 to 40.0mm, preferably 15.0 to 35.0mm, e.g. 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 24.0, 25.0, 26.0, 27.0, 28.0, 29.0, 30.0, 31.0, 32.0, 33.0, 34.0, 35.0, 36.0, 37.0, 38.0, 39.0, 40.0mm or any value therein. In still other embodiments, the specific field of view is an annular region of 8.0mm to 40.0mm in inner diameter, preferably 9.0mm to 20.0mm in outer diameter, most preferably 9.0mm to 15.0mm in outer diameter centered on the center of the lens. In some embodiments, the second refractive region is also constrained within the particular field of view. In still other embodiments, the second refractive region is distributed over a range greater than the particular field of view, for example, up to the lens edge, for example, the second refractive region is formed within an annular region of 8.0mm inner diameter to 60.0mm outer diameter centered at the lens center of the ophthalmic lens.
It should be noted that the light scattering region 3 needs to be confined within a specific view of a ring shape, but the inner edge and the outer edge of the blur region 3 itself may each have various identical or different shapes, such as a circle (refer to fig. 2), an ellipse, a polygon (refer to fig. 3, for example), or an irregular shape (refer to fig. 4, for example).
The light dispersing area may be a patterned area; or a rough surface area; or regions containing inclusions of different refractive indices. The inclusions may be small size particles, bubbles, droplets, or structures that undergo a slight change in local refractive index by heavy polymerization. Accordingly, the light-scattering regions may be formed by a variety of processes, such as by a process suitable for printing on the surface of an ophthalmic lens to form patterned regions, or by a turning process, a sand blasting process, or a etching process to form surface roughness regions (e.g., stripe regions, grain-griping regions, rough regions); or by including inclusions (e.g., small particle size particles, bubbles, droplets, heavy polymerization reaction products) in the lens material.
The light scattering area, i.e. the area where the imaging contrast needs to be reduced, may be in the shape of at least one continuous ring, may be in the form of separate islands, or may be in the form of rings, islands or a combination of both.
The light dispersion area and the second refraction area can be positioned on the same surface or different surfaces of the lens, and the specific shape and the relative position relation can be flexibly set. For example, in some embodiments, at least two of the plurality of microlenses are spaced apart from each other, thereby forming a microlens gap, and the light dispersing region covers the microlens gap. In other embodiments, the light dispersing region also covers at least a portion of the second refractive region (e.g., one or more of the plurality of microlenses, or all of the microlenses, or a portion of a single microlens), and the plurality of microlenses are located on a different surface of the ophthalmic lens than the light dispersing region. In still other embodiments, the plurality of microlenses is configured as a plurality of microlens concentric rings, and the light dispersing region is configured as at least one annulus between at least two of the plurality of microlens concentric rings.
Recent theories indicate that progression of myopia may be related to abnormal mutation of cone cells that perceive the red-green color resulting in abnormal production or processing of light information of different colors. Pre-treatment of red or green light entering the eye may help control the progression of myopia. It is also theorized that the way the human eye retina distinguishes between near-vision defocus and far-vision defocus signals is by identifying the color differences, i.e., the signal intensities of the different colors. The retina is identified as far vision defocus when the blue signal intensity is higher than the red-green, and as near vision defocus when the blue signal intensity is lower than the red-green. The ophthalmic lenses of the present embodiments of the present application may therefore further comprise wavelength selective regions for increasing the transmittance of red light waves and/or decreasing the transmittance of blue light waves. Such ophthalmic lenses are better able to control the progression of myopia.
The wavelength selective region may partially or completely coincide with the second refractive region. In addition, in order not to affect the user's perception of the color (i.e., to avoid visually apparent color cast), the tinting or coating generally avoids the central region of the lens (e.g., the region within 5mm of the radius of the center point).
The wavelength selective region may be achieved by tinting or coating the lens. Different implementations may be used in different locations, considering the processing yield. In the wavelength selective region, a red light wave antireflection film is arranged at the position of the second refraction region; and/or a dye material is used at a location outside the second refractive region to reduce blue light transmittance.
The local imaging contrast reduction treatment and the local wavelength selection treatment of the lens may each be applied independently to the front surface and/or the rear surface of the lens, for example, both simultaneously to the front surface of the lens, or both simultaneously to the rear surface of the lens; or both front and back surfaces; or one surface is subjected to blurring treatment, and the other surface is subjected to lens dyeing or coating.
Four examples are listed below for the detailed description.
Example 1
As shown in fig. 2 to 4, the second refractive zone 2 is located on the same surface of the ophthalmic lens as the light dispersing zone 3, which surface may be the front or back surface of the ophthalmic lens. The second refractive zone 2 is composed of a plurality of island-like microlenses. Light scattering regions 3 are provided at gaps of the plurality of island-shaped microlenses. In other words, the light dispersion region 3 fills the gaps of the plurality of island-shaped microlenses and does not overlap the island-shaped microlenses. The light scattering area 3 does not exceed the specific field of view shown in fig. 1.
Wherein the diopter of the second refractive zone 2 is different from the prescription power of the lens base, and the diopter of the micro lens can be higher than the prescription power +1.5 to +10D, preferably +2.5 to +5D.
Example 2
As shown in fig. 5, the second refractive zone 2 is located on the same surface or a different surface of the ophthalmic lens than the light dispersing zone 3. The second refractive zone 2 is composed of a plurality of island-like microlenses. At the gaps of the plurality of island-shaped microlenses, and at the positions (a) of part of the island-shaped microlenses, light-scattering regions 3 are provided. In other words, the light dispersion region 3 fills the gaps of the plurality of island-like microlenses and overlaps with a part of the island-like microlenses.
Example 3
As shown in fig. 6, the second refractive zone 2 and the light dispersing zone 3 are located on different surfaces of the ophthalmic lens. The second refractive zone 2 is composed of a plurality of island-like microlenses. The light dispersing area 3 includes a plurality of concentric annular bands, which are staggered with the annular distribution of microlens rings. In other words, the annular microlenses and the annular light-scattering regions 3 are complementary in pattern.
Example 4
As shown in fig. 7, a partial dyeing process was performed on the basis of example 3. Specifically, a partial dyeing process is performed on the annular region formed by the distribution of the plurality of island-like microlens structures to constitute the wavelength selective region 4.
It will be appreciated by persons skilled in the art that the application described herein is susceptible to variations and modifications other than those specifically described. The application is not limited to the specific constructions described and illustrated herein, but includes all such variations and modifications as fall within the spirit and scope thereof. Any two or more of the features, structures, or portions singly or collectively set forth in the specification may be combined by those skilled in the art without departing from the spirit and scope of the application.
Claims (11)
1. An ophthalmic lens with reduced local imaging contrast, the ophthalmic lens being a frame lens characterized by a first refractive zone, a second refractive zone and a light dispersing zone, wherein
The first refractive zone has a prescribed refractive power for correcting refractive errors of the eye,
the second refractive region is composed of a plurality of microlenses, each microlens having an adjusted refractive power different from the prescribed refractive power and distributed near the central portion of the lens, and
the light-dispersing region is used to reduce imaging contrast of the peripheral retina.
2. Ophthalmic lens according to claim 1, characterized in that said light-dispersing area and/or said second refractive area are formed inside a specific field of view, said specific field of view being:
an annular region having an inner diameter D1 and an outer diameter D2 centered on the center of the lens, wherein the inner diameter D1 is selected from 8.0 to 10.0mm and the outer diameter D2 is selected from 12.0 to 40.0mm.
3. The ophthalmic lens of claim 1 or 2, wherein the difference between the adjusted power and the prescribed power is 1.5 to 10D, or 2.5 to 5D.
4. Ophthalmic lens according to claim 1 or 2, characterized in that the light-dispersing area is a patterned area; or a rough surface area; or regions containing inclusions of different refractive indices.
5. The ophthalmic lens of claim 1 or 2, wherein at least two of the plurality of microlenses are spaced apart from each other, thereby forming microlens gaps, and the light dispersing region covers the microlens gaps.
6. The ophthalmic lens of claim 1 or 2 wherein the light dispersing region further covers at least a portion of the second refractive region and the plurality of microlenses are located on a different surface of the ophthalmic lens than the light dispersing region.
7. The ophthalmic lens of claim 1 or 2, wherein the plurality of microlenses is configured as a plurality of microlens concentric rings and the light dispersing area is configured as at least one annulus between at least two microlens concentric rings of the plurality of microlens concentric rings.
8. The ophthalmic lens according to claim 1 or 2, further comprising a wavelength selective region for increasing the transmittance of red light waves or decreasing the transmittance of blue light waves.
9. The ophthalmic lens of claim 8 wherein the wavelength selective region partially coincides with or completely coincides with the second refractive region.
10. The ophthalmic lens of claim 8 wherein in the wavelength selective region: and the position of the second refraction area is provided with a red light wave anti-reflection film, and/or the position outside the second refraction area adopts a dyeing material to reduce the transmittance of blue light waves.
11. Frame spectacles characterized by comprising an ophthalmic lens according to any of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210635347.8A CN117233981A (en) | 2022-06-07 | 2022-06-07 | Ophthalmic lenses and frame glasses with reduced local imaging contrast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210635347.8A CN117233981A (en) | 2022-06-07 | 2022-06-07 | Ophthalmic lenses and frame glasses with reduced local imaging contrast |
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| Publication Number | Publication Date |
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| CN117233981A true CN117233981A (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210635347.8A Pending CN117233981A (en) | 2022-06-07 | 2022-06-07 | Ophthalmic lenses and frame glasses with reduced local imaging contrast |
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| Country | Link |
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| CN (1) | CN117233981A (en) |
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- 2022-06-07 CN CN202210635347.8A patent/CN117233981A/en active Pending
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