阅读说明：本技术 一种可缓解远视离焦现象的近视镜片 (Myopia lens capable of relieving hyperopia and defocusing phenomena ) 是由 施文豪 于 2021-03-15 设计创作，主要内容包括：本发明公开了一种可缓解远视离焦现象的近视镜片,包括近视区与离焦区,所述的近视区位于镜片的中央位置；所述的离焦区包括上矫正区域和侧矫正区域,所述的上矫正区域与侧矫正区域之间设有若干个岛状矫正区域；近似区的上端设有模拟线,所述的模拟线与人眼弧度相适应,模拟线的上方为上矫正区域,模拟线的下方位近视区。本镜片通过缓解远视离焦想象从而延缓近视的加剧,在设计时,考虑到人眼在目视远处物品时,其视线一般高于平视实现,所以将远视区域主要设置在上方,通过屈光度正向变化减少视网膜周边的远视性离焦成像。同时通过模拟线的设置,以保证人眼在平视时,离焦区不会影响近视镜片正常的矫正功能。(The invention discloses a near-sighted lens capable of relieving a far-sighted out-of-focus phenomenon, which comprises a near-sighted area and an out-of-focus area, wherein the near-sighted area is positioned in the center of the lens; the defocusing area comprises an upper correction area and a side correction area, and a plurality of island-shaped correction areas are arranged between the upper correction area and the side correction area; the upper end of the approximate area is provided with a simulation line, the simulation line is adaptive to the radian of human eyes, an upper correction area is arranged above the simulation line, and a lower position near vision area of the simulation line is arranged below the simulation line. The lens delays the aggravation of myopia by relieving the vision of hypermetropia out of focus, and in the design, the vision of human eyes is generally higher than that of eyes looking at distant objects, so that the hypermetropia area is mainly arranged above, and the vision out of focus imaging at the periphery of retina is reduced by the positive change of diopter. Meanwhile, the arrangement of the simulation lines ensures that the normal correction function of the myopia lens cannot be influenced by the out-of-focus area when eyes look straight.)

1. A near-sighted lens capable of relieving far-sightedness and defocus, which is characterized by comprising a near-sighted area and a defocus area, wherein the near-sighted area is positioned in the center of the lens;

the defocusing area comprises an upper correction area and a side correction area, and a plurality of island-shaped correction areas are arranged between the upper correction area and the side correction area;

the upper end of the approximate area is provided with a simulation line, the simulation line is adaptive to the radian of human eyes, an upper correction area is arranged above the simulation line, and a lower position near vision area of the simulation line is arranged below the simulation line.

2. A myopic lens which alleviates hyperopic defocus as claimed in claim 1, wherein the defocus is sequentially of the order of upper correction zone > island correction zone > lateral correction zone.

3. A myopic lens which alleviates hyperopic defocus as claimed in claim 1, wherein the number of correction zones is the size of the remaining space divided by the minimum defocus radius.

4. A myopic lens which alleviates hyperopic defocus as claimed in claim 1, wherein the left and right sides of the myopic lens are of symmetrical design.

5. A myopic lens which alleviates hyperopic defocus as claimed in claim 1, wherein the upper correcting zone is elliptical.

6. A myopic lens which alleviates hyperopic defocus as claimed in claim 1, wherein the lateral corrective zone is elliptical.

7. A myopic lens which alleviates hyperopic defocus as claimed in claim 1, wherein the zone of correction is circular.

Technical Field

The invention relates to a near-sighted lens capable of relieving a far-sighted defocus phenomenon.

Background

In recent years numerous studies have shown that accommodation lag and inadequate accommodation sensitivity, rather than accommodation spasms traditionally thought to accelerate myopia progression. For example, Sreenivason et al have found that accommodation sensitivity is significantly lower for myopic children than for emmetropic children [3], while Langaas team measurements indicate that accommodation lag is greater for myopic children than for emmetropic children. These two theories are indeed mutually verifiable, since accommodative lag on reading near with monofocal myopic lenses will exacerbate the peripheral hyperopic defocus.

The above hypothesis is strongly supported by the clinical success of orthokeratology. In the 1980 s, hard contact lenses worn at night for corneal reshaping were known. The central part of the cornea is flattened by mechanical compression, the curvature of the edge of the cornea is changed to cause a higher myopic defocus state, the object image at the peripheral part of the macula is still in front of the retina and is closer to the direction of the cornea, namely the macula is not defocused, and the other center is myopic defocus.

In summary, the theory that the progression of myopia can be effectively alleviated by reducing the peripheral hyperopic defocus of the retina has been demonstrated to some extent in contact lenses.

Disclosure of Invention

The invention aims to solve the defects of the prior art and provide a pair of near-sighted lenses which are convenient to connect and can relieve the phenomenon of far-sighted defocus.

A near-sighted lens capable of relieving far-sightedness defocusing phenomenon comprises a near-sighted area and a defocusing area, wherein the near-sighted area is positioned at the central position of the lens;

the defocusing area comprises an upper correction area and a side correction area, and a plurality of island-shaped correction areas are arranged between the upper correction area and the side correction area;

the upper end of the approximate area is provided with a simulation line, the simulation line is adaptive to the radian of human eyes, an upper correction area is arranged above the simulation line, and a lower position near vision area of the simulation line is arranged below the simulation line.

Preferably, the defocus amount is sequentially the upper correction region > the island correction region > the lateral correction region.

Preferably, the number of island correction areas is the size of the remaining space divided by the minimum defocus radius.

Preferably, the left and right of the myopic lens are symmetrically designed.

Preferably, the upper correction area is elliptical.

Preferably, the lateral correction area is elliptical.

Preferably, the island-like corrected region is circular.

Has the advantages that:

the lens delays the aggravation of myopia by relieving the vision of hypermetropia out of focus, and in the design, the vision of human eyes is generally higher than that of eyes looking at distant objects, so that the hypermetropia area is mainly arranged above, and the vision out of focus imaging at the periphery of retina is reduced by the positive change of diopter. Meanwhile, the arrangement of the simulation lines ensures that the normal correction function of the myopia lens cannot be influenced by the out-of-focus area when eyes look straight.

Drawings

FIG. 1 is a schematic diagram of the general structure of a myopic lens which can alleviate hyperopic defocus;

FIG. 2 is a state diagram of the retina after correction;

1. a myopia correction zone 2, a simulation line 3, an upper correction zone 4, an island correction zone 5, and a lateral correction zone.

Detailed Description

For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.

As shown in fig. 1, a near-vision lens capable of relieving far-vision defocus comprises a near-vision area and a defocus area, wherein the near-vision area is positioned in the center of the lens;

the defocusing area comprises an upper correction area 3 and a side correction area 5, and a plurality of island-shaped correction areas 4 are arranged between the upper correction area 3 and the side correction area 5;

the upper end of the approximate area is provided with a simulation line 2, the simulation line 2 is adapted to the radian of human eyes, an upper correction area 3 is arranged above the simulation line 2, and a lower position near vision area of the simulation line is arranged below the simulation line.

The defocus amounts are sequentially, upper correction region 3> island correction region 4> side correction region 5.

The number of island-like corrected areas 4 is the size of the remaining space divided by the minimum defocus radius.

The left and right of the myopia lens are designed symmetrically.

The upper correction zone 3 and the lateral correction zone 5 are both oval and the island-like correction zone 4 is circular.

Through the setting of above-mentioned out of focus district, can effectually alleviate hyperopia defocus phenomenon to delay user's near-sighted degree.

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.