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Personalized peripheral myopia out-of-focus spectacle lens as well as design method and preparation method thereof

A design method and myopia technology, applied in glasses/goggles, optics, instruments, etc.

Pending Publication Date: 2020-12-11
JIANGSU MASON OPTICAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technical solutions neither mention the targeted design based on the actual measurement value of hyperopia and defocus around the naked eye retina, nor mention the impact of the tilt of the lens after the wearer wears the glasses assembled by inserting the lens into the spectacle frame

Method used

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  • Personalized peripheral myopia out-of-focus spectacle lens as well as design method and preparation method thereof
  • Personalized peripheral myopia out-of-focus spectacle lens as well as design method and preparation method thereof
  • Personalized peripheral myopia out-of-focus spectacle lens as well as design method and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment takes the right eye of a patient with ametropia whose myopia degree is -2D as an example, and provides a kind of peripheral myopic defocus spectacle lens with a personalized design. The outer (front) surface is spherical, and the inner (back) surface is For an asymmetric toroid, the design method of the inner surface is as follows:

[0042] Through the measurement of the open lens meter, it is obtained that the patient's naked eye is 10 degrees, 20 degrees, and 30 degrees on the nasal side, 10 degrees, 20 degrees, and 30 degrees on the temporal side, 10 degrees from the top, 20 degrees from the perspective, and near from the bottom. Peripheral hyperopic refractive power defocus values ​​at 10° and 20° viewing angles are listed in the first column of Table 1 "Naked eye hyperopic defocus value (D)", where D is the symbol of the diopter unit. It shows that the hyperopic defocus increases significantly with the increase of the angle of view, and the temporal...

Embodiment 2

[0051] In this embodiment, taking the left eye of a patient with ametropia whose myopia degree is -6.5D as an example, a kind of peripheral myopic defocus spectacle lens with a personalized design is provided, the outer surface of which is a spherical surface, and the inner surface is an asymmetric superring Refer to Example 1 for the design and preparation method of the surface and inner surface.

[0052] In this embodiment, through the measurement of the open lens meter, it is obtained that the viewing angle of the patient's naked eye is 10 degrees, 20 degrees, and 30 degrees on the nasal side, 10 degrees, 20 degrees, and 30 degrees on the temporal side, and 10 degrees and 20 degrees on the upper side. The peripheral hyperopic defocus values ​​at the near 10 degree and 20 degree viewing angles are listed in the first column of Table 2 "Naked eye hyperopic defocus value (D)"; the distance from the center of eye rotation to the center of the lens is 27.5 Calculate the position...

Embodiment 3

[0057] In this embodiment, the right eye of a patient with ametropia whose spherical myopia degree is -4D and astigmatism -2D is axially 20 degrees is taken as an example. A personally designed peripheral myopic defocus spectacle lens is provided, the outer surface of which is a spherical surface, and the inner surface is an asymmetric toroidal surface. For the design and preparation method of the inner surface, refer to Example 1.

[0058] In this embodiment, through the measurement of the open lens meter, it is obtained that the viewing angle of the patient's naked eye is 10 degrees, 20 degrees, and 30 degrees on the nasal side, 10 degrees, 20 degrees, and 30 degrees on the temporal side, and 10 degrees and 20 degrees on the upper side. Peripheral hyperopic defocus values ​​at 10° and 20° viewing angles are listed in the first column of Table 3 "Naked eye hyperopic defocus value (D)"; the distance from the center of eye rotation to the center of the lens is 27 Calculate the ...

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Abstract

The invention relates to a personalized peripheral myopia out-of-focus spectacle lens as well as design method and preparation method thereof The design method comprises the following steps of: separately measuring the frontward sighting myopia degree of a patient with myopia and the refractive power of each visual angle direction of naked eyes of the patient with myopia to obtain a peripheral hyperopia out-of-focus value of the patient with myopia; performing asymmetric peripheral focal power compensation design on a lens by taking the intersection point position of the sight line of the patient with myopia in each visual angle direction and the lens as a focal power compensation reference point of lens design and taking 105%-120% of the corresponding peripheral hyperopia out-of-focus value of the patient with myopia as a focal power compensation value. after obtaining an initial lens vector height, correcting the initial lens vector height by adopting an additional prism method according to parameters of a spectacle frame to be worn by the patient with myopia to obtain a personalized peripheral myopia out-of-focus spectacle lens. The spectacle lens provided by the invention is suitable for teenagers to wear, not only can correct eyesight, but also can inhibit eyeballs in the growth period from being stretched backwards and curb the deterioration of myopia; the spectacle lensconforms to the ergonomic principle, and has functionality and adaptability.

Description

technical field [0001] The invention relates to a spectacle lens for correcting myopia, in particular to a myopic defocus spectacle lens for correcting hyperopic defocus around the retina and a design and preparation method. Background technique [0002] Since the physiological structure of the retina itself is not a standard spherical surface, the peripheral curvature tends to be steeper than that of the central macula. Only objects facing the central visual field of the eye, that is, on-axis and paraxial objects, are just imaged in the central macular fovea of ​​the eye, while those outside the central visual field Off-axis objects are imaged on the posterior side of the peripheral retina outside the fovea, known as peripheral hyperopic defocus, see appendix figure 1 , is a schematic diagram of hyperopic defocus imaging around the naked eye. That is to say, the naked eye itself has relative peripheral refractive error (RPRE) of retinal peripheral hyperopia and defocus. F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02G02C7/06G02C7/14
CPCG02C7/027G02C7/06G02C7/14
Inventor 褚仁远余浩墨陈晓翌
Owner JIANGSU MASON OPTICAL CO LTD
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