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Lens for correcting presbyopia

A presbyopia and lens technology, applied in the field of vision correction, can solve problems such as being unable to be used in daily life, unable to be used for a long time, and the adjustment area of ​​a single lens is limited, so as to improve the correction effect, reduce the probability of being damaged, and improve the mechanical strength.

Pending Publication Date: 2018-10-12
北京凯爱医疗科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the existing vision correction lens, which only has a single lens adjustment area limited, and it cannot be used for a long time at the same time. There are both near vision training lens and distance vision training lens in the central area of ​​the lens, and the two completely different lenses will produce Ghosting, a problem that cannot be used in daily life, provides a lens for correcting presbyopia

Method used

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  • Lens for correcting presbyopia
  • Lens for correcting presbyopia
  • Lens for correcting presbyopia

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, a lens for correcting presbyopia includes a lens body 1. The lens body 1 has a four-layer structure, which is an antifouling layer 2, a first lens 3, a second lens 4, and a hardened layer 5, and the lens body 1 has two The ends are narrow and wide in the middle, bent toward the anti-fouling layer 2, the first lens 3 and the second lens 4 are located between the anti-fouling layer 2 and the hardened layer 5, and the first lens 3 is close to the anti-fouling layer 2, and inside the first lens 3 A first correction layer 301 composed of more than ten convex photosensitive spherical rings with decreasing circumference is provided, and the second lens 4 is provided with a second correction layer 401 composed of more than ten convex photosensitive spherical rings with decreasing circumference. The vertical projection of the convex photosensitive spherical ring above the track has the same center.

[0037] In use, the anti-fouling layer can reduce the ch...

Embodiment 2

[0039] Based on Example 1, such as Figure 2 to Figure 5 As shown, the curvature of the antifouling layer 2, the first lens 3, the second lens 4, and the hardened layer 5 decreases. The first corrective layer 301 and the second corrective layer 401 are composed of more than ten concentric ellipsoidal rings, and the first corrective layer 301 is located on the upper part of the first lens 3, and its center line passes through the center of the first lens 3. The layer 401 is located at the lower part of the second lens 4 and its center line passes through the center of the second lens 4. The vertical projections of the first correcting layer 301 and the second correcting layer 401 constitute the optical central area. The optical central area includes the optical distance zone 7 formed by the overlapping part of the vertical projections of the first correcting layer 301 and the second correcting layer 401. The upper near vision zone 8 formed by the non-overlapping part of the ver...

Embodiment 3

[0042] Based on Example 2, the optical center area is 6-8cm 2 , And the area ratio of the far vision zone 7, the upper vision near zone 8 and the lower vision near zone 9 is 4:1:1.

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Abstract

The invention relates to the field of vision correction, in particular to a lens for correcting presbyopia. The lens comprises a lens main body, wherein the lens main body is a four-layer structure, i.e., an antifouling layer, a first lens, a second lens and a hardened layer, the lens main body is widened from two ends to the middle part and bent towards the antifouling layer, the first lens and the second lens are located between the antifouling layer and the hardened layer, the first lens is closed to the antifouling layer, a first correction layer consisting of ten convex light sensitive spherical rings with the perimeter being gradually reduced or more is arranged in the first lens, a second correction layer consisting of ten convex light sensitive spherical rings with the perimeter being gradually reduced or more is arranged in the second lens, and the vertical projections of the ten convex light sensitive spherical rings or more have a same center. By adopting the lens for correcting the presbyopia, the problems that the existing vision correction lens which is only a single lens that the adjusting area is limited, the lens cannot be used for a long time, the central area ofthe lens is simultaneously provided with the myopia training lens and the hyperopia training lens, double images can be produced by virtue of the two completely different lenses, and the existing vision correction lens cannot be used everyday can be solved.

Description

Technical field [0001] The invention relates to the field of vision correction, in particular to a lens for correcting presbyopia. Background technique [0002] Presbyopia, or presbyopia, is a physiological phenomenon, neither a pathological state nor a refractive error. It is a visual problem that inevitably occurs after people enter middle-aged and old age. It is one of the signs that the body is aging. With age, the lens of the eye gradually hardens and thickens, and the adjustment ability of the eye muscles also decreases, resulting in a decrease in zoom ability. Therefore, when looking at close objects, because the image cannot be fully focused when projected on the retina, looking at close objects will become blurred. The occurrence and development of presbyopia are directly related to age, and most of them appear after 45 years old. Its occurrence and severity are also related to other factors, such as the original refractive error, height, reading habits, lighting, and ...

Claims

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Application Information

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IPC IPC(8): G02C7/02G02C7/08G02B1/18G02B1/14
CPCG02C7/02G02C7/08G02B1/14G02B1/18
Inventor 徐建隆
Owner 北京凯爱医疗科技有限公司
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