TWM556338U - Aspheric varifocal contact lens for myopia control - Google Patents

Abstract

An aspherical zoom myopia control contact lens includes an inner side portion attached to the eyeball and an outer side portion opposite to the inner side portion, wherein a first melting area is formed with respect to the center of the visual axis of the eye, and a first adjacent to the first a second fused region of the fused region, wherein the first fused region is fused with a first refracting power N, and the second fused region is fused with a second diopter M by the plurality of diopter portions; A diopter|N| is smaller than the second diopter|M|, and the longest distance of the diopter portion is less than 300 nm. The diopter change of the refracting portion of the first fused region and the second fused region causes the human visual imaging system to form a visual imaging corrected visual region, which is located in the front and rear regions of the retina, when the eye is looking far or looking It can be directly adjusted in the near future, and the ciliary muscle and the crystal lens can be compressed and deformed by looking far or near, and the principle of zooming can be achieved by this principle.

Description

Aspherical zoom myopia control contact lens

The present invention relates to a contact lens, and more particularly to an aspherical zoom myopia control contact lens.

Some pathological conditions common in the eye, such as myopia, hyperopia or presbyopia, will solve the problem of vision imaging through optical lenses. In the case of myopia, when looking at a distance, the refraction of parallel rays through the refractive system of the eye will converge in front of the retina, and it will not form a clear image on the retina, so it cannot be seen clearly. The only way to improve is to wear a concave lens in front of the eye to correct the imaging position so that a clear image can be formed on the retina.

However, this imaging state is such that when it is far away, the imaging in front of the retina is introduced into the retina, but when it is used to look near, it is to fall behind the retina, but the refractive system of the eye will proceed. Adjustment, so that when you look close, you can also fall on the retina, but this will also lead to the formation of the eye after the wearing of the corrective lens, it is easier to form the eye, especially the crystal of the refractive system needs to be deformed frequently. This will also cause eye fatigue and aging.

In order to meet the needs of far and near, some optical lenses on the market adopt multi-focus configuration, but this method is prone to serious image jump problems, so that the wearer often has blinks every time. Because the imaging does not fall on the retina, there is a situation of blurred vision. The multifocal design also follows the phenomenon of optical refraction, diffraction and interference. In fact, in order to be able to see the object again, the eye needs to make adjustments, that is, shrinking the ciliary muscle and then elongating or shortening the axis of the lens, thereby allowing the imaging of the object to return to the retina. In this way, instead of being over-adjusted, the wearer is still prone to eye fatigue.

Therefore, the object of the present invention is to provide an aspherical zoom myopia control contact lens that reduces the chance that the crystal lens is regulated, thereby reducing eye fatigue.

Therefore, the present invention controls the contact lens with aspherical zoom myopia, including an inner portion attached to the eyeball and an outer portion opposite to the inner portion, wherein a first melting region is formed with respect to the center of the visual axis of the eye, and an adjacent portion In the second fused region of the first fused region, the first fused region is fused with a first diopter N by a plurality of diopter portions, and the second fused region is fused with a second diopter by a plurality of diopter portions M; the first diopter|N| is smaller than the second diopter|M|, and the longest distance of the diopter portion is less than 300 nm.

The effect of controlling a contact lens with aspherical zoom myopia is The diopter changes of the first fused region and the second fused region of the second fused image region cause the human visual imaging system to form a visual imaging corrected visible region, which is located in the front and rear regions of the retina, when the eye is looking far or near It can be directly adjusted to reduce the compression deformation of the ciliary muscle and the crystal lens due to the far or near change, and reduce the fatigue of the eyes.

1‧‧‧First fusion area

100‧‧‧Contact lenses

101‧‧‧Inside

102‧‧‧Outside

2‧‧‧Second fusion area

3‧‧‧The surrounding area

4‧‧‧Cell crystal

S‧‧·Vision Imaging Correction Visual Area

L‧‧‧ eye visual axis

r ₁ ‧‧‧radius

r ₂ ‧‧‧radius

r ₃ ‧‧‧radius

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic view of a visual imaging showing that the novel aspherical zoom myopia control contact lens is located in front of an eyeball. Embodiments; and FIG. 2 is a schematic diagram for explaining the configuration state of the present invention.

Referring to Figures 1 and 2, an embodiment of the present invention for aspherical zoom myopia control contact lenses is suitable for use by a user who corrects the degree of diopter P.

In the present embodiment, the aspherical zoom myopia control contact lens 100 includes a circular plate-shaped body having a curvature. The body includes an inner portion 101 attached to the eyeball and an outer portion 102 opposite to the inner portion 101, and a first fuse centered on the visual axis L of the eye and fused by the plurality of diopter portions to the first refracting power N The image area 1, a second fused area 2 adjacent to the first fused area 1 and fused by the plurality of diopter portions to the second refracting power M, and a peripheral area 3 adjacent to the second fused area 2, Wherein, the first diopter|N| is smaller than the second diopter|M|, and the longest distance of the diopter portion is less than 300 nm.

The first melting area 1 corresponds to the center of the visual axis L of the eye, and the radius r ₁ of the center of the visual axis of the eye is 0.5 mm to 2.5 mm, and the second melting area 2 is surrounded and adjacent to the first melting area. 1. Its radius r ₂ with respect to the center of the visual axis L of the eye is 2 mm to 4 mm, and the peripheral region 3 is surrounded and adjacent to the second melting region 2, and its radius r _{3 with respect} to the center of the visual axis L of the eye is 4 mm to 8 mm. . Referring to FIG. 2, in the embodiment, the first melting area 1 has a radius of 2 mm, the second melting area 2 has a radius of 4 mm, and the peripheral area 3 has a radius of 8 mm.

The plurality of diopter portions form a multi-zoom type, and when the longest distance is less than 300 nm, the human visual imaging system forms a visually visible region (such as region S of FIG. 1) located in the front and rear regions of the retina, such that Users of the present type have their crystals 4 (shown in Figure 1) that do not undergo excessive deformation when viewed near or far away.

Further, in order to detect whether the optical structure of the contact lens designed by the present invention is equivalent to the aspherical single focus contact lens in use, the ocular field of the University of Big Leaf is also inspected, and the report results are shown in Table 1 below. Among them, BC (base arc), Dia (outer diameter), PWR (fitness number) are detected values, and the target value represents the original design degree. It can be clearly seen from the detection values presented in Table 1. The optical structure designed by the present invention is substantially equivalent to the aspherical single focus contact lens, and therefore, it is indeed available for different correction of the degree of myopic P diopter. User wear.

In summary, the aspherical zoom myopia control contact lens of the present invention uses the diopter|N| of the first fusion area 1 to be smaller than the diopter|P| to be corrected, and by the different diopter changes of the multifocal point, The human visual imaging system forms a visual imaging correction visible area S located in the anterior and posterior regions of the retina, which can be directly adjusted when the eye is far or near, and reduces the compression of the ciliary muscle and the crystal crystal by looking far or near. Shape, in order to reduce the feeling of fatigue of the eyes. In addition, the wearer's vision can be constantly and stably controlled under the visual perception that the external things can be clearly seen, so the purpose of the novel can be achieved.

However, the above is only the embodiment of the present invention, and when it is not possible to limit the scope of the present invention, all the simple equivalent changes and modifications according to the scope of the patent application and the contents of the patent specification are still This new patent covers the scope.

Claims (3)

An aspherical zoom myopia control contact lens comprising a curved, circular sheet-shaped body, the body comprising an inner portion attached to the eyeball and an outer portion opposite to the inner portion, wherein the relative visual axis of the eye The center is formed with a first melting area, and a second melting area adjacent to the first melting area, the first melting area is fused by the plurality of diopter parts to the first refracting power N, the second melting image The region is fused by the plurality of diopter portions with a second diopter M; the first diopter |N| is smaller than the second diopter |M|. The aspherical zoom myopia control contact lens of claim 1, wherein the longest distance of the diopter portion is less than 300 nm. The aspherical zoom myopia control contact lens according to claim 1, wherein the first fusion image region corresponds to a center of the visual axis of the eye, and a radius from the center of the visual axis of the eye is 0.5 mm to 2.5 mm, the second fusion image The region is surrounded and adjacent to the first fused region, and has a radius of 2 mm to 4 mm with respect to the center of the visual axis of the eye, the body further comprising a peripheral region surrounding and adjacent to the second fused region, the opposite The radius of the center of the eye's visual axis is 4mm to 8mm.