CN216485835U

CN216485835U - Lens for slowing down eye axis and myopia growth speed

Info

Publication number: CN216485835U
Application number: CN202122865199.2U
Authority: CN
Inventors: 许天灏
Original assignee: Shanghai Wanming Optical Co ltd
Current assignee: Shanghai Wanming Optical Co ltd
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-10
Anticipated expiration: 2031-11-22

Abstract

The utility model relates to the technical field of optical lenses, and particularly discloses a lens for slowing down the growth rate of an eye axis and myopia, which comprises a substrate, a composite film layer, a prescription photometric area and a functional area, wherein the prescription photometric area and the functional area are arranged on the substrate; the prescription photometric zone is a circular zone and is arranged in the middle of the substrate; the functional area is of a circular ring structure and is arranged outside the prescription luminosity area; the functional area is added with the smooth astigmatism defocusing; the lens provided by the utility model utilizes the smooth astigmatism defocusing and the functional area luminosity change to form the myopic defocusing so as to promote the choroid to thicken to reach an ideal state and induce the retina to stretch forwards, thereby slowing down the eye axis growth speed; meanwhile, the image of the functional area is focused in front of the retina, and the image of the prescription photometric area is focused at the macula lutea recess of the retina, so that the main vision of the brain adopts the image of the functional area focused in front of the retina, the effect of slowing down the stretching of the axis of the eye is further improved, and the effect of controlling myopia is achieved.

Description

Lens for slowing down increase speed of eye axis and myopia

Technical Field

The utility model relates to the technical field of optical lenses, in particular to a lens for slowing down the increase speed of an eye axis and myopia.

Background

The peripheral visual field brought by the traditional myopia lens imaging principle on the market falls behind the retina, so that the eye axis in the growth and development period is increased too fast to see objects clearly.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a lens for slowing down the growth rate of the axis of the eye and myopia, so as to solve the above-mentioned problems of the background art.

In order to achieve the purpose, the utility model provides the following technical scheme: a lens for slowing down the growth speed of the axis of the eye and the myopia comprises a substrate, a composite film layer, a prescription photometric area and a functional area, wherein the prescription photometric area and the functional area are arranged on the substrate; the prescription photometric zone is a circular zone and is arranged in the middle of the substrate; the functional area is of a circular structure, is arranged at the outer side of the prescription luminosity area and is concentric with the prescription luminosity area; the functional area is added with the regular astigmatism defocusing.

Preferably, the substrate is any one of a substrate with a refractive index of 1.56, a substrate with a refractive index of 1.60, a substrate with a refractive index of 1.67 and a substrate with a refractive index of 1.74.

Preferably, the radius of the prescription photometric zone is 3 mm-6 mm by taking the optical center of the substrate as a circle center.

Preferably, the inner edge of the functional region is the outer edge of the prescription photometric region, and the outer edge is 15 mm-25 mm.

Preferably, the functional area gradually increases the corrected defocus amount from the inner edge to the outer edge, and the corrected defocus amount is +1.00 to + 3.50D.

Preferably, the defocus of the functional region is +1.00 to +3.50D, and the axial direction is 180 degrees.

Preferably, the composite film layer comprises an ultraviolet-proof layer and a waterproof layer, the ultraviolet-proof layer is arranged along the substrate, and the waterproof layer is arranged on the outer side of the ultraviolet-proof layer; the ultraviolet-proof layer is made of polycarbonate sheet material, and the waterproof layer is a nano silver layer

Compared with the prior art, the utility model has the beneficial effects that: the lens provided by the utility model utilizes the orthoscopic defocusing and the photometric change of the functional area to form the myopic defocusing, so that the choroid is thickened to reach an ideal state, and the retina is induced to stretch forwards, thereby slowing down the growth speed of the axis of the eye; meanwhile, the image of the functional area is focused in front of the retina, the image of the prescription photometric area is focused at the macula lutea recess of the retina, and the image of the functional area is slightly blurred due to the fact that the luminosity of the functional area is not a fixed value but floats within a certain range, so that the main vision of the brain adopts the functional area to focus on the image in front of the retina, the effect of reducing the stretching of the axis of the eye is further improved, and the effect of controlling myopia is achieved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the composite film layer of the present invention;

FIG. 4 is a schematic diagram of a photometric distribution according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a second photometric distribution according to an embodiment of the present invention;

FIG. 6 is a schematic diagram of a third photometric distribution according to an embodiment of the present invention;

FIG. 7 is a schematic outer edge radius of a functional region of the present invention;

FIG. 8 is a schematic view of parameters in the outer edge radius calculation formula for the functional regions of the present invention;

the reference numbers in the figures: 1. a substrate; 2. a prescription photometric zone; 3. a functional region; 4. an ultraviolet-proof layer; 5. and a waterproof layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1-8, the present invention provides a technical solution: a lens for slowing down the growth speed of the axis of the eye and the myopia comprises a substrate 1, a composite film layer, a prescription photometric area 2 and a functional area 3, wherein the prescription photometric area 2 and the functional area 3 are arranged on the substrate; the prescription photometric zone 2 is a circular zone and is arranged in the middle of the substrate 1; the functional area 3 is of a circular structure, is arranged at the outer side of the prescription photometric area 2 and is concentric with the prescription photometric area 2; the functional area 3 is attached with the regular astigmatism defocusing.

Further, the substrate 1 is any one of a substrate having a refractive index of 1.56, a substrate having a refractive index of 1.60, a substrate having a refractive index of 1.67, and a substrate having a refractive index of 1.74.

Furthermore, the prescription luminosity zone 2 takes the optical center of the substrate 1 as the center of a circle and has a radius of 3 mm-6 mm; the diameter of the pupil is about 2-4 mm, and the distance between the eyes is considered, so the radius of the prescription luminosity area is set to be 3-6 mm, which is slightly larger than the diameter of the pupil.

Furthermore, the inner edge of the functional area 3 is the outer edge of the prescription luminosity area 2, and the outer edge is 15 mm-25 mm; the outer edge radius of the functional area is calculated by the formula: r ═ tan (w) · (a + B);

wherein R represents the outer edge radius of the functional zone, W represents the half field angle, A represents the spectacle distance, and B represents the actual eye axis length of the wearer; the functional region 3 adopts a 30 ° half field angle.

Furthermore, the functional area 3 gradually increases the corrected defocus amount from the inner edge to the outer edge, and the corrected defocus amount is +1.00 to + 3.50D; the formula for calculating the corrected defocus amount is as follows: x ═ 1- (B-C)/C ═ Y;

where X represents the corrected defocus amount, C represents the average length of the eye axis at different ages, B represents the actual eye axis length of the wearer, and Y represents the average distance defocus amount at different ages.

Furthermore, the defocus of the normal light added to the functional area 3 ranges from + 1.00D to +3.50D, and the axial direction is 180 degrees.

Further, the composite film layer comprises an ultraviolet-proof layer 4 and a waterproof layer 5, the ultraviolet-proof layer 4 is arranged along the substrate 1, and the waterproof layer 5 is arranged on the outer side of the ultraviolet-proof layer 4; the ultraviolet-proof layer 4 is made of polycarbonate sheet materials, and the waterproof layer 5 is a nano silver layer.

The first embodiment is as follows:

as shown in FIG. 4, a piece of lens with refractive index of 1.60 and focal power of-6.00D for slowing down the axis of the eye and the rate of progression of myopia was designed and the wearer was 9 years old. The front surface base curve of the lens is +4.00D, the back surface base curve is-10.00D, the lens distance is 12 mm, the length of the eye axis is 23 mm, the outer edge radius of the functional area is calculated to be 20.78 mm according to the formula R ═ tan (w) × (A + B), the corrected defocusing amount is calculated to be 2.02D according to the formula X ═ 1- (B-C)/C ^ Y, and the additional +3.00D 180 DEG direct defocusing is considered.

Example two:

as shown in fig. 5, a piece of lens with refractive index of 1.60, focal power of-4.00D for slowing down the eye axis and increasing the speed of myopia is designed, the age of the wearer is 12 years, the front surface base curve of the lens is +4.00D, the back surface base curve is-8.00D, the distance between the eyes is 12 mm, the length of the eye axis is 23 mm, the radius of the outer edge of the functional zone is 20.96 mm according to the formula R ═ tan (w) × (a + B), the corrected defocus amount is 1.87D according to the formula X ═ 1- (B-C)/C ] × Y, and the extra +3.00D 180 ° compliant astigmatism is considered.

Example three:

as shown in fig. 6, a lens with refractive index of 1.60, focal power of +2.00D for slowing down the eye axis and increasing the speed of myopia is designed, the age of the wearer is 7 years, the front surface base curve of the lens is +4.00D, the back surface base curve is-2.00D, the distance between the eyes is 12 mm, the length of the eye axis is 23 mm, the radius of the outer edge of the functional zone is 20.44 mm according to the formula R ═ tan (w) × (a + B), the corrected defocus amount is 2.02D according to the formula X ═ 1- (B-C)/C ] × Y, and the extra +3.00D 180 ° compliant astigmatism is considered.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A lens for slowing down the increase speed of the axis of the eye and the myopia is characterized in that: the luminous film comprises a substrate (1), a composite film layer, a prescription luminous intensity area (2) and a functional area (3), wherein the prescription luminous intensity area and the functional area are arranged on the substrate, and the composite film layer is arranged on the outer side surface of the substrate (1); the prescription photometric zone (2) is a circular area and is arranged in the middle of the substrate (1); the functional area (3) is of a circular structure, is arranged at the outer side of the prescription luminosity area (2) and is concentric with the prescription luminosity area (2); the functional area (3) is added with the smooth astigmatism defocusing.

2. The lens of claim 1, wherein said lens is adapted to slow the progression of axial and near vision: the substrate (1) is any one of substrates with refractive index of 1.56, refractive index of 1.60, refractive index of 1.67 and refractive index of 1.74.

3. The lens of claim 1, wherein said lens is adapted to slow the progression of axial and near vision: the prescription luminosity zone (2) takes the optical center of the substrate (1) as the center of a circle and has the radius of 3-6 mm.

4. The lens of claim 1, wherein said lens is adapted to slow the progression of axial and near vision: the inner edge of the functional area (3) is the outer edge of the prescription luminosity area (2), and the outer edge is 15 mm-25 mm.

5. The lens of claim 1, wherein said lens is adapted to slow the progression of axial and near vision: the functional area (3) gradually increases the corrected defocusing amount from the inner edge to the outer edge, and the corrected defocusing amount is +1.00 to + 3.50D.

6. The lens of claim 1, wherein said lens is adapted to slow the progression of axial and near vision: the normal astigmatism defocusing added to the functional area (3) is +1.00 to +3.50D, and the axial direction is 180 degrees.

7. The lens of claim 1, wherein said lens is adapted to slow the progression of axial and near vision: the composite film layer comprises an ultraviolet-proof layer (4) and a waterproof layer (5), the ultraviolet-proof layer (4) is arranged along the substrate (1), and the waterproof layer (5) is arranged on the outer side of the ultraviolet-proof layer (4); the ultraviolet-proof layer (4) is made of polycarbonate sheet materials, and the waterproof layer (5) is a nano silver layer.