CN104094164B - For slowing down the optical mirror slip of myopia development - Google Patents

Abstract

A kind of optical mirror slip for human eye is disclosed. In described embodiment, optical mirror slip is the form of contact lenses 100, and contact lenses 100 comprise multiple alternating optical region 102, and the plurality of alternating optical region 102 is arranged between contact lenses 100 center 104 and periphery 106. Alternating optical region 102 comprises multiple annular vision correcting region CZ₁CZ₅, it has for ametropic the first refractive power of myopia correction, to produce focusing retinal images. Compared to first refractive power at 104 places, center at eyeglass, be compared with long sight at first refractive power at periphery 106 places of eyeglass. Optical region 102 further comprises multiple annular vision out-focus region DZ₁DZ₅, it has for generation of the second refractive power that defocuses retinal images, wherein multiple annular vision out-focus region (DZ₁DZ₅) be arranged as respectively and multiple annular vision correcting region (CZ₁CZ₅) alternately. By this configuration, contact lenses 100 are conducive to slow down myopia development.

Description

For slowing down the optical mirror slip of myopia development

Technical field

The present invention relates to the optical mirror slip for slowing down myopia development, particularly but be not limited to contact lenses.

Background technology

In the U.S., the financial cost of myopia is annual 2.5 hundred million dollars according to estimates. There is the one-tenth of high myopiaPeople may have the ocular complications of blinding, for example retinal hole (retinaltear) and macular degeneration.The highest in the middle of the adult of the prevalence rate of myopia in Asian Cities, urban, comprise Singapore's (38.7%),And at the U.S. lower (22.7%). In the Singaporean children of 7 years old, rate of myopia is 27.8%. Illustrate and can haveThe intervention measure that effect reduces myopia development is very important.

Optics is got involved measure, and for example multifocal spectacles and contact lenses (CL), not yet obtain confirmation and can slow downMyopia development. Only there are atropine (atropine) and pirenzepine (pirenzipine) effectively to delayDeepen, but its possible long-term side-effects makes to have got rid of the recommendation to ordinary populace.

Have and be similar to 220,000 children with myopias between 5 to 16 years old in Singapore. All over the worldChildren with myopia can be worn these contact lenses until be grown up and benefit from this intervention measure. Due to the year of SingaporeIn light adult, have 83% to be near-sighted, this problem more and more receives publicity.

Object of the present invention is for a kind of optical mirror slip is provided, this optical mirror slip solve prior art shortcoming and/Or provide a useful selection to masses.

Summary of the invention

In the first scheme, a kind of optical mirror slip for human eye is provided, this optical mirror slip comprises multiple friendshipsFor optical region, the plurality of alternating optical region is arranged between the center and periphery of this optical mirror slip, shouldAlternating optical region comprises (i) multiple annular vision correcting region, and it has for myopia correction dioptric notThe first positive refractive power, to produce focusing retinal images, compared to bending at first of this center of lens placeLuminous power is compared with long sight at the first refractive power of the periphery of this eyeglass; And (ii) multiple annular visionsOut-focus region, it has for generation of the second refractive power that defocuses retinal images, the plurality of annular visionOut-focus region is arranged as with each region in the plurality of annular vision correcting region and replaces.

By this configuration, applicant has found that this layout is comparatively effective for slowing down myopia development, particularlyFor children.

Preferably, each region of the plurality of annular vision correcting region and the plurality of annular vision out-focus regionIt is multiple right to be grouped into, and obtains first and second corresponding refractive power in order to the centering identical. So,Can obtain the first refractive power based on following formula:

$(X+\frac{2(i-1)}{n-1}D),$

Wherein:

X is the ametropia of human eye;

N is described right number; And

I is the right numbering of described annular vision correcting region and annular vision out-focus region.

Can obtain described the second refractive power based on following formula:

$(X+\frac{2(i-1)}{n-1}D)+2.5D,$

Wherein:

X is the ametropia of human eye;

N is described right number; And

I is the right numbering of described annular vision correcting region and annular vision out-focus region.

Preferably, described optical mirror slip further comprises four or alternating optical region more than four. MorePreferably, described in it, optical mirror slip comprises even number alternating optical region, for example 4,6,8,10,12Individual region. Alternatively, there are ten alternating optical regions.

Described the first refractive power can comprise for each the variation in described multiple vision correctings regionPower values. Described the second refractive power can comprise in myopic defocus region each variation bendLuminous power value.

Can recognize that described optical mirror slip can be the form of contact lenses, or can be used as the mirror of glassesSheet.

Brief description of the drawings

Referring now to accompanying drawing, embodiments of the invention are described, wherein:

Fig. 1 is ametropia in order to the myopia of rectification-3.00D according to an embodiment of the invention and has tenThe contact lenses of individual optical region;

Fig. 2 is contact lenses that Fig. 1 the is shown schematic diagrames for bathomorphic effect;

Fig. 3 illustrates that the myopia in order to rectification-2D is ametropia and has the contact lenses of ten optical regions,As the modification of the contact lenses of Fig. 1;

Fig. 4 illustrates that the myopia in order to rectification-4D is ametropia and has the contact lenses of ten optical regions,As the modification of the contact lenses of Fig. 1;

Fig. 5 illustrates that the myopia in order to rectification-3D is ametropia and has the contact lenses of eight optical regions,As the modification of the contact lenses of Fig. 1; And

Fig. 6 illustrates that the myopia in order to rectification-3D is ametropia and has the contact lenses of six optical regions,As the modification of the contact lenses of Fig. 1.

Detailed description of the invention

Fig. 1 illustrates the optical mirror slip 100 with contact lenses (CL) form according to the embodiment of the present invention.It is soft that contact lenses 100 are preferably day throwing, and it has the periphery long sight of increase and the myopic defocus district replacingTerritory is to reduce or retarding myopia intensification.

Contact lenses 100 comprise multiple optical regions that replace 102, in order to correct-3.00 diopters (D)Myopia ametropia, and in this embodiment, have ten optical regions 102. Ten optical regions 102Start from contact lenses 100 center 104 until the periphery 106 of contact lenses 100, and in each Optical RegionThe territory vicissitudinous refractive power of 102 place's tool (refractivepower) or luminous intensity (opticalpower),The refractive power of this variation or luminous intensity at center 104 between periphery 106 as follows distribute: X,X+2.5D，(X+0.5D)，(X+0.5D)+2.5D，(X+1.0D)，(X+1.0D)+2.5D，(X+1.5D), (X+1.5D)+2.5D, (X+2.0D) and (X+2.0D)+2.5D.-3.00In the example of diopter (D), the refractive power from the center to periphery of ten optical regions 102 is-3.0D,-0.5D ,-2.5D, 0D ,-2D ,+0.5D ,-1.5D ,+1D ,-1D and+1.5D. In this enforcementIn example, optical region 102 is for participating in covering wide annular or the concentric ring of pupil region.

Optical region 102 alternately comprises that multiple annular vision correctings region is (or referred to as " clear area "(CZ)) and multiple annular vision out-focus region (or referred to as " out-focus region " (DZ)), this is clearRegion (CZ) is in order to produce the image focusing at retina place. In Fig. 1, there are five clear areasCZ(CZ₁、CZ₂、CZ₃、CZ₄And CZ₅) and five out-focus region DZ (DZ₁、DZ₂、DZ₃、DZ₄And DZ₅) for arranging.

Known, the clear area (CZ) of Fig. 1 comprises that power values is in order to compensate periphery hyperopic defocus, asFruit clear area CZ do not correct exactly periphery exist just may there is this compared with long sight is ametropiaPeriphery hyperopic defocus. In particular, as shown in fig. 1, the power values of clear area (CZ) is(X+0.5D), (X+1.0D), (X+1.5D) and (X+2.0D), generation-2.5D ,-2.0D ,-1.5DAnd-value of 1.0D. In other words, compared to approaching or at the refractive power of the center of eyeglass, stealthy eyeThe refractive power at periphery 106 places of mirror 100 is compared with long sight, in order to produce focusedimage at retina place.

On the other hand, out-focus region (DZ) has to be arranged as to produce and defocuses the refractive power of retinal images,And in this embodiment, out-focus region (DZ) has following refractive power: x+2.5D, (x+0.5D)+ 2.5D, (x+1.0D)+2.5D, (x+1.5D)+2.5D and (x+2.0D)+2.5D, to produceLife-0.5D, 0D ,+0.5D ,+1D and+value of 1.5D.

Fig. 2 illustrates the schematic diagram of contact lenses 100 for the effect of myopia 200. Due to compared toThe refractive power at 104 places, contact lenses 100 center, the refractive power at periphery 106 places be compared with long sight orThe refractive power of larger this variation, enters the light beam 202 of contact lenses 100 through clear area CZLocate to focus on retina 206 at the focal point F P of clear area CZ (CZ), to produce focusedimageFP (CZ). Meanwhile, due to the refractive power of out-focus region DZ, enter stealth through out-focus region DZThe light beam 204 of glasses 100 locates to focus on retina 206 at the focal point F P of out-focus region DZ (DZ)Front.

Visible, contact lenses 100 myopia corrections also compensate periphery hyperopic defocus simultaneously, and therefore stealthyMirror 100 locates with 106 liang of peripheries the retinal images that provides bright and sharp at the center 104 of contact lenses.

Contact lenses 100 have the many annular regions that are configured to difference in functionality, more effectively improving orAntagonism myopia, particularly for children. These contact lenses have also slowed down myopia development.

Imagination the structure of contact lenses 100 can be extended to the optical region 102 of any number and/or forCompensation is different ametropia. This can be by being grouped into clear area (CZ) and out-focus region (DZ)Realize in paired region. For arbitrarily, " n ", to region (n >=2), incites somebody to action comparatively long sight in peripheryClear area CZ with can be summarized as in the power profile of out-focus region DZ corresponding to identical centering (fromCenter 104 is to periphery 106):

Clear area: $(X+\frac{2(i-1)}{n-1}D)---\left(1\right);$ And

Out-focus region: $(X+\frac{2(i-1)}{n-1}D)+2.5D---\left(2\right);$

Wherein:

X=is ametropia;

The right numbering in region described in i=.

In the embodiment of Fig. 1 and Fig. 2, clear area CZ and out-focus region DZ are will be understood thatRight through being grouped into according to its subscript:

The 1st pair: (CZ₁，DZ₁); The 2nd pair: (CZ₂，DZ₂); The 3rd pair: (CZ₃，DZ₃)；The 4th pair: (CZ₄，DZ₄); And the 5th pair: (CZ₅,DZ₅)。

According to formula (1) and formula (2), taking the 3rd pair as example, the numbering i=3 that this is right, right number n=5, and in order to the x of correction of refractive errors be-3D CZ₃、DZ₃Corresponding refractive power be:

CZ₃＝-2D

DZ₃=+0.5D; It is the value shown in Fig. 1.

According to formula (1) and (2), the contact lenses in 10 regions in order to compensate different ametropia (2D,-3D ,-4D and-5D) power profile be shown in following form 1:

Table 1

For all refractive powers, should understand compared to (, the clear area CZ in center₁) bendLuminous power, (, the clear area CZ in periphery₅) refractive power be compared with long sight.

Fig. 3 illustrates for the ametropic contact lenses 300 of compensate-2D and this contact lenses 300 toolsHave for the power profile shown in the table 1 in ten alternating optical regions 302. Fig. 4 illustrates for compensationThe ametropic contact lenses 400 of-4D and this contact lenses 400 have for ten alternating optical districtsPower profile shown in the table 1 in territory 402.

Similarly, according to formula (1) and (2), the embodiment of same imaginary picture of primitive people 1 may extend to zones of different.Table 2 represents in order to reach the refractive power compared with hyperopia result in the periphery of contact lenses, this contact lenses toolThere are 8,6 and 4 optical regions, ametropia in order to rectification-3D:

Table 2

Fig. 5 illustrates in order to the ametropia of compensation-3D and has eight alternating optical region 502 (, n=4 pairs) contact lenses 500. Construct eight optical regions 502 so that at contact lenses according to table 2The refractive power of 500 periphery is compared with long sight. Fig. 6 illustrates the ametropia and tool in order to compensation-3DThere are the contact lenses 600 in six alternating optical regions 602 (, n=3 to). Construct six according to table 2Optical region 602 is so that be compared with long sight at the refractive power of the periphery of contact lenses 600.

Described embodiment is not interpreted as restrictive. In described embodiment, propose to make apparatusThere is the soft eyeglass of the periphery long sight of myopic defocus and increase. But, also can imagine the eyeglass of other type,For example rigid eyeglass. Can change shape and the size of contact lenses, and similarly, in various degreeMyopia, contact lenses can be suitable for slowing down myopia. For example, this eyeglass can have 8mm, 8.3mm and 8.6mmCurvature and the diameter of 13.5mm, 13.8mm or 14mm. The center thickness of the refractive power of-3.00DFor 0.12mm. For each additional refractive power, can use mold base to develop a pair of insert.

Illustrated in/width of optical region 102 described is equidistant, but also can be really not so, and thereforeThe variable-width of optical region 102.

In addition,, although described embodiment uses contact lenses as an example, should understand this embodiment canBe suitable for the optical mirror slip of other type, for example, for the optical mirror slip of glasses (spectacles/glasses).Although described embodiment can be used in glasses, be not preferably for glasses. This be because with changeBecome and stare the inevitable eye movement that fixation is associated, this is stared fixation and changes glasses and eye positionBetween aligning. On the other hand, contact lenses be fix and centered by pupil, and therefore stealthyGlasses move along with the motion of eyes, and this can overcome particularly children's the fixation continuously changing of the mankindStare.

In described embodiment, contact lenses have many annular domain (>=4), and it is designed for notCongenerous, more effectively to treat myopia and therefore should understand and can construct contact lenses 100 according to applicationTo there is the region of arbitrary number.

The present invention is carried out to comprehensive description, obvious to those skilled in the art, notDepart from the situation of desired interest field and can do multiple amendment for the present invention.

Claims (7)

1. for an optical mirror slip for human eye, this optical mirror slip comprises multiple alternating optical region, and these are manyIndividual alternating optical region is arranged between the center and periphery of described optical mirror slip, described alternating optical regionComprise

(i) multiple annular vision correctings region, it has for ametropic the first dioptric of myopia correctionPower, to produce focusing retinal images, compared to the first refractive power of the center at eyeglass, at eyeglassThe first refractive power of periphery be compared with long sight; And

(ii) multiple annular vision out-focus region, it has for generation of defocusing second of retinal imagesRefractive power, described multiple annular vision out-focus region are arranged as with described multiple annular vision correctings regionEach region alternately;

Each region of wherein said multiple annular vision correcting region and described multiple annular vision out-focus regionIt is multiple right to be grouped into, and obtains first and second corresponding refractive power in order to the centering identical; And

Wherein obtain described the first refractive power based on following formula:

$(X+\frac{2(i-1)}{n-1}D);$

And wherein obtain described the second refractive power based on following formula:

$(X+\frac{2(i-1)}{n-1}D)+2.5D,$

Wherein:

X is the ametropia of human eye;

N is described right number; And

I is the right numbering of described annular vision correcting region and annular vision out-focus region.

2. optical mirror slip as claimed in claim 1, further comprises four or alternately light more than fourTerritory, school district.

3. optical mirror slip as claimed in claim 1, wherein has ten alternating optical regions.

4. optical mirror slip as claimed in claim 1, wherein said the first refractive power comprises for described manyThe power values of the variation of each in individual vision correcting region.

5. optical mirror slip as claimed in claim 1, wherein said the second refractive power comprises for myopia looseThe power values of the variation of each in burnt region.

6. optical mirror slip as claimed in claim 1, the form that wherein said optical mirror slip is contact lenses.

7. glasses, it comprises the optical mirror slip as described in any one in claim 1 to 6.