CN113238394A

CN113238394A - Full-view-area zoom corneal contact lens

Info

Publication number: CN113238394A
Application number: CN202110573232.6A
Authority: CN
Inventors: 萧旭贵; 陈瑞麟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-25
Filing date: 2021-05-25
Publication date: 2021-08-10

Abstract

The invention discloses a full-vision-area variable-focus corneal contact lens, which comprises a contact lens body, wherein an optical area is arranged on the contact lens body, and the optical area consists of a plurality of annular optical areas which are concentric with each other and have gradually-increased diameters.

Description

Full-view-area zoom corneal contact lens

Technical Field

The invention relates to the field of optics, in particular to a full-view-area variable-focus corneal contact lens.

Background

The eyes of myopes are imaged in front of the retina for distant scenes and therefore do not form a sharp image on the retina. However, referring to figure quarrel, when the myopic patient's eye is fitted with a concave myopic contact lens, the distant scene is imaged onto the retina via corrective accommodation of the myopic contact lens.

When the myopia degree is confirmed to be matched, the myopia contact lenses capable of correcting the eyesight of the myopia patients are found out through remote measurement, for example, the myopia contact lenses which are measured and configured can enable the myopia patients to clearly see the distance of five meters with the definition of the corrected eyesight.

However, most of the time, the myopes wear the myopic contact lenses configured by the above-mentioned distance measurement, and look at the screens of electronic appliances such as flat panels, mobile phones and computers for a long time at a short distance, or to sign a book at a close distance quiet for a long time, actually, the eyes wearing the myopic contact lenses are allowed to see the close-distance pictures by the vision imaging after the distance correction, therefore, hyperopic Defocus (Hyperpia Defocus) is generated in the peripheral range of the retina, so that for the eye to correctly focus to generate clear visual images, the ciliary muscle of the eye needs to be contracted tightly to drive the crystalline lens to focus, the ciliary muscle spasm can be caused to lose the ability of relaxing temporarily, and the pseudomyopia is formed, if this condition is maintained for a long period of time, the spasm of the ciliary muscle may also stimulate elongation of the ocular axis of the eye, thereby causing irreversible true myopia, resulting in an increase in the degree of myopia.

The existing corneal contact lens is easy to correct blurred vision when being worn, and the existing corneal contact lens cannot inhibit the myopia degree, so that the normal use of serious people cannot meet the use requirement, and therefore, a full-vision-area zooming corneal contact lens is urgently needed to solve the problem.

Disclosure of Invention

The invention aims to provide a full-visual-area variable-focus corneal contact lens.

The contact lens body is provided with an optical area which is composed of a plurality of annular optical areas with concentric circles and gradually enlarged diameters.

Preferably, the optical zone has a diameter of 9 mm.

Preferably, the distance between two of said annular optical zones is less than 0.25 mm.

Preferably, the amount of change between the two annular optical zones is less than 2D.

Preferably, the optical zone further comprises an optical full-view zone.

Preferably, the optical zone further comprises a defocus zone.

Preferably, the separation amount of the defocusing area is designed to be 1-20D.

Preferably, the diameter of the defocused area ranges from 3mm to 9 mm.

Preferably, the diameter range of the optical full view area is within 6 mm.

Preferably, the spacing between two of said annular optical zones is 0.15 mm.

The invention has the advantages of simple structure and reasonable arrangement, compared with the prior art, the whole optical full-view area of the lens has the focal length for seeing near and far so as to correct presbyopia, simultaneously, the pressure of the crystal is reduced when the lens is used for short distance for a long time so as to reduce tiredness, and the lens can become a myopia control lens by increasing the defocusing design.

Drawings

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

FIG. 2 is one of the illustrative photometric distribution diagrams of the present invention;

FIG. 3 is a second schematic diagram of the photometric distribution of the present invention;

FIG. 4 is a third schematic diagram of the photometric distribution of the present invention;

FIG. 5 is a fourth illustration of the photometric distribution of the present invention;

FIG. 6 is a fifth schematic diagram of the luminosity distribution of the present invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

Referring to fig. 1-6, a full-view-area variable-focus contact lens comprises a contact lens body 1, wherein the contact lens body 1 is provided with an optical area 2, and the optical area 2 is composed of a plurality of annular optical areas 21 which are concentric with each other and have gradually larger diameters.

The diameter of the optical area 2 is within 10 mm.

The optical zone 2 preferably has a diameter of 6-9mm, which allows better luminosity variation to ensure better visual effects, a focal length to see near and far, which in turn allows for the correction of presbyopia, and a reduction in the pressure of the crystal when applied to the eye for a long period of time at close distances.

The annular optical zone 21 has more than 15 optical zones, and can be produced according to different actual use requirements.

Of course, the greater the number of the annular optical zones 21, the better the effect can be achieved.

The invention can realize the control of myopia and correct presbyopia, and one lens realizes double effects, can meet the use requirements of different users and meets the use requirements.

The distance between the two annular optical areas 21 is less than 0.25mm, and the distance is less than 0.25mm, so that the images have continuity by utilizing the principle of diffraction and scattering of light, and the problem of serious double images caused by discontinuous images of common multiple focuses can be solved.

The smaller the spacing between the two annular optical zones 21, the better the effect it achieves.

The amount of change between the two annular optical zones 21 is less than 2D.

The optical area 2 also comprises an optical full visual area (within the diameter of 6 mm), which has a far and near focal length, and can be freely adjusted when seeing near and far, so that the pressure of the crystal is reduced when seeing near, and the purposes of reducing the deterioration of myopia and preventing myopia are achieved.

Still include the out-of-focus district in the optical zone 2, peripheral out-of-focus design is in the region of pupil periphery diameter 3 ~ 8mm, lets light focus on in front of the retina, and then the worsening of gradual myopia.

The deviation of the focus-separating area is designed to be 1-20D, and the higher the myopia degree is, the higher the defocus quantity is.

The design of the defocusing area is preferably 15D.

The diameter range of the out-of-focus area is preferably 3 mm-9 mm or 4-8 mm, the out-of-focus design is increased, and then the out-of-focus control lens can be a myopia control lens, and the use requirement of a user is met.

Peripheral out of focus design is in pupil peripheral diameter 3 ~ 8 mm's region, lets light focus on before the retina, and then the worsening of gradual myopia to guarantee the health of eye, avoid the myopia to deepen, satisfy user's use needs.

The distance between the two annular optical zones 21 is 0.15 mm.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for the convenience of description and simplicity of description, rather than to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention, the terms "first" and "second" are used for descriptive purposes only, and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a full visual area varifocal cornea contact lens, including contact lens body (1), its characterized in that: the contact lens body (1) is provided with an optical area (2), and the optical area (2) is composed of a plurality of annular optical areas (21) which are concentric with each other and have gradually-increased diameters.

2. A full field of view variable power contact lens of claim 1, wherein: the diameter of the optical area (2) is 9 mm.

3. A full field of view variable power contact lens of claim 1, wherein: the distance between the two annular optical areas (21) is less than 0.25 mm.

4. A full field of view variable power contact lens of claim 1, wherein: the amount of change between the two annular optical zones (21) is less than 2D.

5. A full field of view variable power contact lens of claim 1, wherein: the optical area (2) also comprises an optical full view area.

6. A full field of view variable power contact lens of claim 1, wherein: the optical area (2) also contains an out-of-focus area.

7. A full field of view variable power contact lens of claim 6, wherein: the separation amount of the coke separation area is designed to be 1-20D.

8. A full field of view variable power contact lens of claim 6, wherein: the diameter range of the defocusing area is 3-9 mm.

9. A full field of view variable power contact lens of claim 5, wherein: the diameter range of the optical full view area is within 6 mm.

10. A full field of view variable power contact lens of claim 3, wherein: the distance between the two annular optical areas (21) is 0.15 mm.