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Cranny covering eyeglass for eliminating eye astigmatism and method for eliminating astigmatism

A lens and fissure technology, which is applied in the field of shading lenses and the elimination of astigmatism, can solve the problem that there is no good method for astigmatism correction, and achieve the effects of eliminating astigmatism, reducing the amount of stimulation, and uniform corneal curvature

Inactive Publication Date: 2015-12-23
杨克忠
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no good method for correcting astigmatism of compound myopia or compound hyperopia, and wearing ordinary glasses can only correct myopia or hyperopia, and cannot solve the problem of astigmatism

Method used

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  • Cranny covering eyeglass for eliminating eye astigmatism and method for eliminating astigmatism
  • Cranny covering eyeglass for eliminating eye astigmatism and method for eliminating astigmatism
  • Cranny covering eyeglass for eliminating eye astigmatism and method for eliminating astigmatism

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] If the initial eye condition of the trainee is: -1.50DS()-0.50DC×90° complex myopic astigmatism, the specific training method is as follows:

[0042] Use the axial position of the slit lens at 90° plus the spherical myopia lens of -1.50D in 3 training sessions for 10 minutes each time to change the spherical myopia lens. The specific steps include:

[0043] a. For the first 10 minutes, add 0D spherical myopia lenses for training at a distance of 60cm from the photosensitive training light source;

[0044] b. For the second 10 minutes, change the -1.00D spherical myopia lens for training at a distance of 60cm from the photosensitive training light source;

[0045] c. For the third 10 minutes, change the -2.00D spherical myopia lens for training at a distance of 60cm from the photosensitive training light source;

[0046] The first lens power is equal to the original spherical lens power plus +1.50D (if the training distance is 30cm, add +3.00D); the next two lens change...

Embodiment 2

[0049] If the initial eye condition of the trainee is: +3.00DS()+0.75DC×45° complex hyperopic astigmatism, the specific training method is as follows:

[0050] Use the slit-shielding lens with an axial position of 45° plus +3.75D spherical hyperopia lens for 3 sessions of training for 10 minutes each time to change the spherical hyperopia lens. The specific steps include:

[0051] a. For the first 10 minutes, add +3.75D spherical hyperopia lenses for training at a distance of 60cm from the photosensitive training light source;

[0052] b. For the second 10 minutes, change to a +2.75D spherical hyperopia lens and do training at a distance of 60cm from the photosensitive training light source;

[0053] c. For the third 10 minutes, change to a +1.75D spherical hyperopia lens and do training at a distance of 60cm from the photosensitive training light source;

[0054] The first lens power = the combined power of the original spherical lens power + 3.00D plus + 0.75D astigmatism p...

Embodiment 3

[0057] If the initial eye condition of the trainee is: +O.75DS()-1.75DC×180° mixed astigmatism, the specific training method is as follows:

[0058] Use the axial position of the slit lens at 180° plus the +2.25D spherical hyperopia lens in 3 sessions of training for 10 minutes each time to change the spherical hyperopia lens. The specific steps include:

[0059] a. For the first 10 minutes, add +2.25D spherical hyperopia lenses for training at a distance of 60cm from the photosensitive training light source;

[0060] b. For the second 10 minutes, change to a +1.25D spherical hyperopia lens and do training at a distance of 60cm from the photosensitive training light source;

[0061] c. For the third 10 minutes, change to a +0.25D spherical hyperopia lens and do training at a distance of 60cm from the photosensitive training light source;

[0062] The first lens power = the original spherical lens power plus +1.50D (if the training distance is 30cm, add +3.00D), and then chang...

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Abstract

The invention relates to a cranny covering eyeglass for eliminating eye astigmatism and a method for eliminating astigmatism. The cranny covering eyeglass comprises an eyeglass frame, the eyeglass frame is internally provided with a plano lens, the central position of the plano lens is provided with an anti-dazzling screen, and the center of the anti-dazzling screen is provided with a circular hole pervious to light. The rectification method comprises the following steps: (1) when a trainee has compound myopic astigmatism, a training eyeglass composed of a cranny eyeglass and a concave-sphere myopia eyeglass is used for a fine stimulation photosensitive training; (2) when a trainee has compound hypermetropic astigmatism, a training eyeglass composed of the cranny covering eyeglass and a convex-sphere hyperopia eyeglass is used for a fine stimulation photosensitive training; (3) when a trainee has compound astigmatism, a training eyeglass composed of the cranny eyeglass and the convex-sphere hyperopia eyeglass is used for a fine stimulation photosensitive training; the invention has the beneficial effects that when the fine stimulation training is carried out, longitudes with large curvatures are covered, only the parts with small curvatures for cornea are used for carrying out photosensitive stimulation, so that the purpose for eliminating astigmatism is realized.

Description

technical field [0001] The invention belongs to the technical field of vision correction, and in particular relates to a crack-shielding lens for eliminating eye astigmatism and a method for eliminating astigmatism. Background technique [0002] Astigmatism is a refractive error of the eye that is related to the curvature of the cornea. The cause of astigmatism is that the refractive index of each meridian of the cornea is inconsistent due to the uneven thickness of the cornea or the uneven curvature of the cornea, so that the light passing through these meridians cannot be gathered at the same focus. As a result, light rays cannot be accurately focused on the retina to form a clear image of objects, a condition known as astigmatism. There are two views on the formation of simple myopia. One is that the adjustment ability of the eyes of young people is particularly strong. When they look at close distances, they are too close and do not feel tired, so they develop bad eye h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/16A61H5/00
Inventor 杨克忠
Owner 杨克忠
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