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Peripheral out-of-focus frame eyeglass lens with functional area asymmetric correction quantity

A technology of functional areas and spectacle lenses, which is applied in the field of peripheral defocused spectacle lenses to achieve the effect of reducing asymmetrical defocusing states

Inactive Publication Date: 2014-10-08
段亚东
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above research shows that when designing the peripheral defocusing frame spectacle lens, it is necessary to eliminate or reduce the relative refractive asymmetry around the retina as much as possible. The design of the peripheral defocusing frame spectacle lens for myopia is still one of the technical problems that have not been successfully achieved.

Method used

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  • Peripheral out-of-focus frame eyeglass lens with functional area asymmetric correction quantity
  • Peripheral out-of-focus frame eyeglass lens with functional area asymmetric correction quantity
  • Peripheral out-of-focus frame eyeglass lens with functional area asymmetric correction quantity

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Embodiment Construction

[0027] Meanings of terms in this manual:

[0028]Peripheral relative refraction (Relative peripheral refraction; RPR) refers to the refractive state of each peripheral visual field angle relative to the central fovea, that is, the difference between the spherical equivalent value of each peripheral visual field angle and the central fovea.

[0029] Retinal defocus means that the light does not focus on the retina. It is divided into central retinal defocus and retinal peripheral defocus. Defocus is divided into front defocus and back defocus. Front defocus means that light is focused in front of the retina Called myopic defocus, posterior defocus refers to the focus of light behind the retina, also known as hyperopic defocus.

[0030] The positive bonus refers to the addition of the diopter of the nasal functional area or the temporal functional area relative to the central optical zone, or in other words, on the basis of the diopter of the central optical zone, plus the conve...

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Abstract

The invention discloses a peripheral out-of-focus frame eyeglass lens with functional area asymmetric correction quantity and belongs to health-care eyeglasses. Peripheral refraction of the retina is in an asymmetric state for myopia, the asymmetric state cannot be eliminated by the conventional peripheral out-of-focus eyeglass lens, and anisometropia can be increased or generated. Unequal correction degrees are prepared in a nasal side functional area and a bitamporal functional area, and the correction degree in the nasal side functional area is larger than the correction degree in the bitamporal functional area, so that the peripheral asymmetric refraction state of the retina is eliminated or reduced. The peripheral out-of-focus frame eyeglass lens is used for correcting the peripheral hyperopia defocus of the retina on the bitamporal side and the retina on the nasal side and controlling myopic eyeball growth and has wide view and high wearing compliance, the peripheral asymmetric refraction state of the retina is eliminated, the normal physiological optical state of human eyes is restored, and children and adolescents are effectively prevented from suffering from myopia.

Description

technical field [0001] The invention relates to the field of ophthalmology, and provides a peripheral defocusing frame spectacle lens for correcting asymmetric hyperopic defocusing around the temporal retina and nasal retina, which is used to prevent and control myopia in children. Background technique [0002] Nowadays, it is recognized in medicine that the growth of eyeballs in children with myopia depends on the regulation of peripheral focus of the retina. Hyperopic defocus around the retina promotes eyeball growth. Correcting hyperopic defocus around the retina can control the growth of myopic eyeballs. The nasal or temporal area of ​​the traditional myopia lens is concave lens with the same power as the central area. The concave lens in the central area of ​​the lens corrects the myopic defocus in the central retina, and the concave lens in the peripheral area of ​​the lens increases the peripheral hyperopia of the nasal and temporal retina. Sexual defocus, promote eye...

Claims

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Application Information

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IPC IPC(8): G02C7/06
CPCG02C7/066G02C7/045G02C2202/24
Inventor 段亚东
Owner 段亚东
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