Myopic glasses

A technology for myopia and glasses, applied in the field of myopia glasses, can solve the problems of not reducing the defocus of the side center hyperopia, unable to control the progress of myopia, etc., and achieve the effect of reducing the uniformity of visual deprivation and reducing the uniformity of the side center hyperopic defocusing.

Active Publication Date: 2012-07-04
征平元 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the lens designs of the existing myopia glasses have the same power for the entire lens, which do

Method used

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Examples

Experimental program
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Effect test

Example Embodiment

[0027] Example 1

[0028] Such as figure 2 for figure 1 The orthographic view of the lens in the y-axis direction. The figure shows the relationship between the lens center radius and the added power when the lens center radius is in different numerical ranges. In the figure, point O is the projection center of the lens, where the line segments oa, ob, oc, and od are respectively different center radii, where oa=4mm, ob=10mm, oc=16mm, od=22mm.

[0029] Set the myopia power of the myopia patient to -4.00D, at this time the circle with radius oa in the figure (hereinafter referred to as the first circle) in the lens corresponds to the power (that is, the center power) is -4.00D, from the inside The circles are outward in turn, and the circle with a radius of ob (hereinafter referred to as the second circle) has a power of -3.50D in the corresponding area on the lens, that is, 0.50D is added to the center power.

[0030] In turn, the power of the circle with the radius of oc (hereinaf...

Example Embodiment

[0034] Example 2

[0035] Such as image 3 The difference between this embodiment and embodiment 1 is that: in this embodiment, the myopia degree of the myopia patient is set to -3.00D. At this time, the circle with the radius of oa (hereinafter referred to as the first circle) in the lens The degree of the area corresponding to the above (that is, the center degree) is -3.00D, and the degree of the circle with a radius of ob (hereinafter referred to as the second circle) on the lens corresponding to the area on the lens is -2.50D, namely Add 0.50D on the basis of the center degree.

[0036] Sequentially, the power of a circle with a radius of oc (hereinafter referred to as the third circle) on the lens corresponding to the area is -2.00D, that is, 1.00D is added on the basis of the center power.

[0037] Sequentially, the power of a circle with a radius of od (hereinafter referred to as the fourth circle) on the lens corresponding to the area is -1.50D, that is, 1.50D is added on t...

Example Embodiment

[0039] Example 3

[0040] Such as Figure 4 The difference between this embodiment and embodiment 1 is that: in this embodiment, the myopia degree of the myopia patient is set to -2.00D, and the circle with the radius of oa in the figure (hereinafter referred to as the first circle) in the lens The degree of the area corresponding to the above (that is, the center degree) is -2.00D, from the inner circle to the outside in turn, the circle with a radius of ob (hereinafter referred to as the second circle) has a degree of -1.50D on the lens corresponding to the area, that is Add 0.50D on the basis of the center degree.

[0041] Sequentially, the power of a circle with a radius of oc (hereinafter referred to as the third circle) on the lens corresponding to the area is -1.00D, that is, 1.00D is added on the basis of the center power.

[0042] Sequentially, the degree of the circle with the radius of od (hereinafter referred to as the fourth circle) on the lens corresponds to the degree...

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Abstract

The invention discloses a pair of myopic glasses. The projection area of each lens is four concentric circles, radius ranges of the circles are sequentially are 4-8mm, 10-14mm, 16-20mm and 22-26mm from inside to outside, and diopters (D) of the circles are sequentially a, a+0.50 D, a+1.00 D, a+1.50 D from inside to outside, wherein a is myopic degree. The pair of myopic glasses is suitable for glance habit of a user, covers a central visual field, has enough peripheral definition and comfort, and achieves relative unification between form sense deprivation reduction and eccentric defocus reduction.

Description

technical field [0001] The invention relates to glasses, in particular to a kind of myopia glasses. Background technique [0002] Now, juvenile myopia is getting more and more attention and attention from the society. The characteristic of juvenile myopia is that the axial length of the eye continues to grow during the process of height growth with development, and myopia is easy to deepen. There are genetic factors and environmental factors. Among environmental factors, the degree of paracentric defocus (relative to the central diopter) is considered to have a strong influence on the progression of myopia. Due to the characteristics of the shape of the eyeball, myopia is prone to paracentral hyperopic defocusing, and this defocusing form is likely to lead to a further increase in myopia, a vicious circle. To control myopia, one of the links must be broken, that is, the artificial reduction of paracentric hyperopic defocus through optical intervention. And the lens design...

Claims

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Application Information

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IPC IPC(8): G02C7/06
Inventor 王本平周行涛陈志余浩墨徐光华
Owner 征平元
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