CN109581690A

CN109581690A - Eyeglass, glasses and acquisition defocusing amount parameter, the method with mirror and Evaluated effect

Info

Publication number: CN109581690A
Application number: CN201811592602.5A
Authority: CN
Inventors: 魏瑞华; 王景慧; 杜蓓; 林伟平; 谷天瀑; 刘桂华
Original assignee: TIANJIN MEDICAL UNIVERSITY EYE HOSPITAL
Current assignee: TIANJIN MEDICAL UNIVERSITY EYE HOSPITAL
Priority date: 2018-12-25
Filing date: 2018-12-25
Publication date: 2019-04-05
Anticipated expiration: 2038-12-25
Also published as: CN111708183B; CN111897141A; CN111897141B; CN109581690B; CN111708183A

Abstract

A kind of eyeglass, glasses and obtain defocusing amount parameter, the method with mirror and Evaluated effect, wherein defocus eyeglass in periphery provided by the present application includes central optical zone, is provided with the defocus area of annular the central optical zone outside, and the defocusing amount in defocus area exists on circumferential direction to be changed.There is structure change in the circumferential at least one of base curve area and reversion arc area of Ortho-K eyeglass provided by the present application.The method that the application obtains defocusing amount parameter include: acquire on user's cornea or the dioptric system of A nearsighted person's cornea and eyeglass composition on multiple sampling points defocusing amount, sampling point is distributed in using corneal center as on the multiple directions angle in the coordinate system of origin；And defocusing amount parameter is obtained according to the defocusing amount of sampling points multiple on cornea.Determine the Ortho-K to the method for the near-sighted control effect of the A nearsighted person according to defocusing amount parameter present invention also provides a kind of.

Description

Eyeglass, glasses and acquisition defocusing amount parameter, the method with mirror and Evaluated effect

Technical field

This application involves near-sighted prevention and control fields, more particularly, to a kind of eyeglass, glasses, and obtain defocusing amount parameter Method, with mirror method and the method for assessing near-sighted control effect.

Background technique

Myopia has become a great public health problem, and myopia also becomes the significant burden of society.Light exists The deviation degree at interface can be expressed with refractive power (refractive power).Refractive power depends on the refractive index of two media With the radius of curvature at interface.Myopia is ametropic one kind.For normal eyeball, the image on center and periphery is all thrown as regarding On nethike embrane.Myopia is since eyeball extends, in the case where adjusting relaxed state, parallel rays focus after the refraction of the dioptric system of eye It falls in front of retina.

The development mechanism of myopia is still in heated discussion, and existing research finds the hand that many control axis oculi increase Section, drug and different optical design eyeglasses including various concentration.Periphery defocus theory is houston, U.S.A university eye view light The near-sighted origin cause of formation that institute Smith professor proposes in last century end.According to dioptrics concept, focus claims before falling in retina For Myopia defocus, retina is fallen in hereinafter referred to long sight defocus.Periphery defocus theory thinks the remote of this retinal periphery It is the main reason for promoting myopia degree to be continuously increased depending on property defocus.And the Myopia defocus of retinal periphery can slow down eye The growth of axis has the effect of inhibiting myopia progression.

Traditional main purpose of monochromatic light glasses is to solve wearer to see remote unclear needs, can only correction ocular center Huang The defocus of macular area.It is the view object schematic diagram of the eyes after single vision lenses correction shown in Fig. 1.Image at central vision projects to view On nethike embrane, the image of peripheral region has but projected to the rear of retina, forms long sight defocus.And eyeball will do it adjusting and allow The image of peripheral region projects on retina, this can be such that axis oculi slowly elongates.So some patientss are wearing common myopia After mirror, although solving the problems, such as to see remote unclear, myopia degree is still constantly deepened.

The mirrors of periphery defocus can be reduced the long sight defocus of retinal periphery, or even so that it becomes Myopia from Coke is increased with alleviating axis oculi.The optical mirror slip of this special designing can be Ortho-K (such as OK mirror (OrthoKeratology)), contact lens (including soft corneal contact lens, hardware contact lens such as RGP mirror etc.) or frame The eyeglass of frame glasses (the double light frame eyeglasses of such as prism, double light frame eyeglasses, progressive multi-focal lenses).Myopia through periphery from After burnt eyeglass correction, the image at central vision is projected to retina, and peripheral image is projected on retina or projecting In front of to retina, Myopia defocus effects are formed, as shown in Figure 2.Studies have found that the contact lens of periphery defocus controls The success rate of myopia (i.e. the inhibition axis oculi speed of growth) can achieve 30%~40% or so.

Ortho-K uses inverse geometry designs, corrects defects of vision and control myopia progression by changing cornea shape to reach Purpose, the success rate for controlling myopia progression can achieve 32%-55%.Unlike frame eyeglasses and contact lens, Ortho-K only needs night to wear, and not needing wearing eyesight daytime can reach normal value.The design of Ortho-K is divided into VCT (vision shaping treatment vision remodeling treatments) design and CRT (corneal refractive therapy Cornea refractive is rescued) design.Wherein the Ortho-K of VST design includes base curve area, reversion arc area, positioning arc area and all arcs Area.

It is all usually the constant central optical zone of refractive power in the middle part of the eyeglass of contact lens and frame eyeglasses, for this Shen It please be used for for the eyeglass of the periphery defocus of myopia control, the refractive power of the neighboring area except central optical zone is higher than center The difference in optics area, the refractive power of the two is indicated with defocusing amount, with D (degree) for unit.For example, if in near-sighted eyeglass The degree for entreating optics area is -2.00D (degree of the general degree as eyeglass), and peripheral position has the defocusing amount of 4.5D, then The degree of the eyeglass peripheral position is 2.5D.If the degree of the eyeglass central optical zone for myopia is -5.00D, this week The defocusing amount of side position is still 4.5D, then the degree of the eyeglass peripheral position is -0.50D.

The defocusing amount design of periphery defocus eyeglass is related to the effect of myopia control, but which defocusing amount parameter and myopia Associated mechanism is still not clear between related and defocusing amount parameter and myopia control for control (referring to control myopia progression), thus It is difficult to targetedly carry out the design of periphery defocus eyeglass and with mirror, this affects the attainable myopia of periphery defocus eyeglass Control effect.

For Ortho-K, the size of defocusing amount is formed by cornea, at present the only estimation of total amount.It has no The it is proposed of other defocusing amount parameters relevant to near-sighted control.And the clinic of the effect of Ortho-K is estimated and still lacks mark Standard takes a long time the near-sighted control effect that can judge it for specific A nearsighted person.This makes cornea modeling mirror shape Using being affected.

Summary of the invention

It is the general introduction to the theme being described in detail herein below.This general introduction is not the protection model in order to limit claim It encloses.

The embodiment of the invention provides a kind of eyeglass of periphery defocus, the eyeglass includes central optical zone, the center The defocus area of annular is provided with outside optics area, the defocusing amount in the defocus area has variation on circumferential direction.

The embodiment of the invention provides a kind of frame eyeglasses, including mirror holder and two eyeglasses, which is characterized in that described two At least one of eyeglass uses the eyeglass of periphery defocus as described above.

The embodiment of the invention provides a kind of eyeglass of Ortho-K, the eyeglass include base curve area, reversion arc area and Arc area is positioned, at least one of the base curve area and reversion arc area have structure change in the circumferential.

The embodiment of the invention provides a kind of methods for obtaining defocusing amount parameter, comprising: under user's naked state, acquisition The defocusing amount of multiple sampling points on user's cornea, the sampling point are distributed in using corneal center to be multiple in the coordinate system of origin On deflection；And defocusing amount parameter is obtained according to the defocusing amount of sampling points multiple on the cornea.

The embodiment of the invention provides a kind of methods for obtaining defocusing amount parameter, comprising: wears cornea in A nearsighted person and connects When touching mirror, the defocusing amount of multiple sampling points on the dioptric system of A nearsighted person's cornea and eyeglass composition, the sampling point point are acquired Cloth is on the multiple directions angle in the coordinate system using corneal center as origin；And according to sampling points multiple on the dioptric system Defocusing amount obtains defocusing amount parameter.

The embodiment of the invention provides one kind to match mirror method, comprising: obtains the side of defocusing amount parameter as described above Method obtains A nearsighted person with the defocusing amount parameter under the naked state before mirror；And according to the defocusing amount parameter be the myopia Patient matches mirror.

The embodiment of the invention provides a kind of methods for assessing near-sighted control effect, comprising: method as described above Obtain the defocusing amount parameter that A nearsighted person obtains under Ortho-K is to the naked state after cornea moulding；And according to described Defocusing amount parameter determines the Ortho-K to the near-sighted control effect of the A nearsighted person.

After reading and understanding attached drawing and detailed description, it can be appreciated that other aspects.

Detailed description of the invention

Fig. 1 be using single vision lenses to myoporthosis when the schematic diagram of long sight defocus that generates；

The schematic diagram for the Myopia defocus that Fig. 2 is generated when being using periphery defocus eyeglass；

Fig. 3 A be patient's cornea on same direction angle defocusing amount with distance change schematic diagram；

Fig. 3 B is patient's cornea schematic diagram that mRCRP changes within the scope of 0~360 degree；

Fig. 4 is the schematic diagram of each component in the mRCRP model established；

Fig. 5 is the schematic diagram that maximum defocus amount Vmax and axis oculi increase the relationship between length；

Fig. 6 is the schematic diagram that myopia control success rate changes with the variation of Vmax；

Fig. 7 A- Fig. 7 D is the schematic diagram of several different situations of each component value in mRCRP model；

Fig. 8 A and Fig. 8 B are the schematic diagrames of the periphery defocus eyeglass of two exemplary embodiments of the invention；

Fig. 9 is the schematic diagram of exemplary embodiment of the present Ortho-K；

Figure 10 is the A-A sectional view of Fig. 9；

Figure 11 is the flow chart for the method that exemplary embodiment of the present obtains defocusing amount parameter；

Figure 12 is the flow chart for the another method that exemplary embodiment of the present obtains defocusing amount parameter；

Figure 13 is that exemplary embodiment of the present provides the flow chart for matching mirror method；

Figure 14 is that exemplary embodiment of the present provides the flow chart for assessing the method for near-sighted control effect；

Figure 15 is the schematic diagram of the computer equipment of exemplary embodiment of the present.

Specific embodiment

This application describes multiple embodiments, but the description is exemplary, rather than restrictive, and for this It is readily apparent that can have more in the range of embodiments described herein includes for the those of ordinary skill in field More embodiments and implementation.Although many possible feature combinations are shown in the attached drawings, and in a specific embodiment It is discussed, but many other combinations of disclosed feature are also possible.Unless the feelings specially limited Other than condition, any feature or element of any embodiment can be with any other features or element knot in any other embodiment It closes and uses, or any other feature or the element in any other embodiment can be substituted.

The application includes and contemplates the combination with feature known to persons of ordinary skill in the art and element.The application is It can also combine with any general characteristics or element through disclosed embodiment, feature and element, be defined by the claims with being formed Unique scheme of the invention.Any feature or element of any embodiment can also be with features or member from other scheme of the invention Part combination, to form the unique scheme of the invention that another is defined by the claims.It will thus be appreciated that showing in this application Out and/or any feature of discussion can be realized individually or in any suitable combination.Therefore, in addition to according to appended right It is required that and its other than the limitation done of equivalent replacement, embodiment is not limited.Furthermore, it is possible in the guarantor of appended claims It carry out various modifications and changes in shield range.

In addition, method and/or process may be rendered as spy by specification when describing representative embodiment Fixed step sequence.However, in the degree of this method or process independent of the particular order of step described herein, this method Or process should not necessarily be limited by the step of particular order.As one of ordinary skill in the art will appreciate, other steps is suitable Sequence is also possible.Therefore, the particular order of step described in specification is not necessarily to be construed as limitations on claims.This Outside, the claim for this method and/or process should not necessarily be limited by the step of executing them in the order written, art technology Personnel are it can be readily appreciated that these can sequentially change, and still remain in the spirit and scope of the embodiment of the present application.

In the application, Ortho-K and contact lens can use gas permeability hard material (RGP, Rigid Gas Permeable eyeglass), but belong to two distinct types of glasses.Ortho-K uses the eyeglass of inverse geometric shape design, Its inner surface is made of multiple segmental arcs.Change cornea geometric shape by hydrodynamics effect, is worn over cornea front during sleep, by Step makes cornea curvature flatten, axis oculi shortens, and daytime is without wearing.And contact lens is referred to as contact lenses (contact lens), eyeglass does not use inverse geometry designs, by be worn on the optical effect generated on cornea come Eyes are corrected defects of vision or protect, soft or hard according to material may include rigid, semi-hard, soft three kinds.The eyeglass of frame eyeglasses It is mounted on mirror holder, there are distances between eyeglass and eyeball.

Ortho-K is tested with successful standard first is that forming centrally-located placed in the middle, i.e., is formed on cornea uniform Periphery defocus.Some researches show that, myopic refractive is not just being spent bigger, the periphery defocusing amount of formation is bigger, near-sighted control effect phase To good.But it is specific much, it is not referred to which parameter to assess the size of defocusing amount, and the size of periphery defocusing amount It will receive various limitations, cannot be made especially big.The data area for the periphery defocus that the research of this conclusion is chosen is big, for- 1.00~-6.00D.Meanwhile also have research conclusion rather it is thought that periphery defocusing amount size and near-sighted control effect have no it is inevitable Relationship, the periphery defocus data range generally chosen according to this research are smaller.In addition, for contact lens and frame eyeglasses For, if the eyeglass excessive using periphery defocusing amount, the patient feels can be made uncomfortable, caused under eyesight, Contrast sensitivity visual acuity Drop, and there is the problems such as production is difficult.The periphery Defocusing design scheme that the eyeglass of contact lens and frame eyeglasses uses at present, Its near-sighted control effect is lower than Ortho-K.

If can preferably explain that Ortho-K alleviates the mechanism of axis oculi growth, Ortho-K clinic is tested to match and is incited somebody to action There is great directive significance, while mechanism can be extended to the periphery Defocusing design of contact lens eyeglass, frame eyeglasses eyeglass In.For this purpose, present inventor has carried out perspective study, and after inquiring into wearing Ortho-K, the defocus form of cornea And the influence that the factors such as degree grow A nearsighted person's axis oculi.

For defocusing amount, what is only formed after the estimation of total amount or hypothesis Plastic surgery at present is exactly uniform periphery defocus feelings Condition.And present inventor it has been investigated that, since the asphericity bring retina of corneal astigmatism and retina is different Meridian is different to the reaction of defocus, and the periphery defocus formed on cornea after patient-worn's moulding mirror is simultaneously uneven.Using calculating Periphery defocus total amount or mean value are come to measure influence of the periphery defocus to myopia control be unscientific.For often occurring in clinic - 1.00~-5.00D A nearsighted person, Ortho-k rear perimeter edge defocus total amount difference is little, but due to Ortho-k Maximum value (is also known as by the maximum value that the difference of cornea upper periphery defocus distribution will cause the defocusing amount on cornea afterwards in the application Extreme value, the maximum position of defocusing amount on cornea can be a point or multiple points, can together can also be from integrated distribution It is distributed in many places scatteredly).More sensitive not instead of total amount of the retina for defocusing amount, the extreme value of defocusing amount, namely have Extreme value sensibility.In terms of periphery defocus is to the influence of myopia control, the size of the maximum defocus amount on cornea is more total than defocusing amount The size of amount is more important.

Present inventor wears after Ortho-K on cornea between defocusing amount and near-sighted control effect children Relationship has carried out experimental study, and experimental method is as follows:

Enter group for 55 8-12 years old teenagers as patient, patient controls product usage history, no ocular disease without myopia Disease, no systemic disease for influencing dioptric system.- 5.50D≤SE≤- 1.00D is satisfied in the Mydriasis Test & Optometry of patient, and (SE is equivalent Spherical mirror diopter), corneal astigmatism≤- 1.50D, antimetropia is less than 1.0D, most preferably corrects defects of vision higher than 20/20.Patient's warp Cross comprehensively check after wear the U.S.'s euclidean company production Ortho-K (Euclid System Crop., Herndon, VA), all patients check between 2-5 point in the afternoon；Optical correlation bio-measurement instrument is used before wearing and after 1 year respectively (Lenstar LS900, Haag-Streit AG, Switzerland) measures biological mechanics.Before wearing and match latter four months Corneal topography is checked using corneal topographers (Oculus, Wetzlar, Germany).Every patient takes right eye data to carry out Statistics examines the normal state of all data using Shapiro-Wilk test (Schapiro-Wilk test).It is examined using sum of ranks Test the ideal group of myopia control and undesirable group of difference in (Ranksum test) method comparison model.It is returned using Logistic The relationship of analytical myopia control success rate and defocusing amount maximum value.

In this experiment, the data obtained by corneal topography are analyzed, precisely using following methods to determine on cornea Defocusing amount parameter: the positioning of eyeglass is determined with Matlab software.Using corneal center as the center of circle, cornea is divided into 36 sectors Region, the central angle in each region is 10 °, take multiple sampling points in each area, the sampling point including a corneal center with Calculate the defocusing amount of other sampling points.These sampling points can be uniformly distributed in this region, can also be distributed in and be successively spaced 10 ° On 36 deflections, the precision of the more calculating of sampling point is higher.To each region, which can be calculated by corneal topography In all sampling points defocusing amount, as shown in Figure 3A.Horizontal axis indicates distance (i.e. diameter of the point on the region apart from corneal center in figure To distance).The longitudinal axis indicates the refractive power of the point on the region.The refractive power of corneal center is 40 degree in figure, the dioptric of other points Power subtracts the 40 i.e. defocusing amount of the point.It takes maximum defocusing amount in figure to indicate the defocusing amount in the region, is denoted as mRCRP.MRCRP is logical Often appear in the corresponding pupil region in Ortho-K reversion arc area.

To each patient, 36 mPCRP and its corresponding angle on available 36 regions, such as 0 to 10 ° of region Corresponding angle may be set to 0 ° (or another value in 0 °~10 °), and the corresponding angle in 10 °~20 ° regions can be set as 10 ° (or another value in 10 °~20 °), and so on.It is carried out curve fitting and (is selected appropriate according to 36 mPCRP Curve type is fitted observation data, and analyzes the relationship between two variables with the curvilinear equation of fitting), an available defocus Curve, referred to as mPCRP curve are measured, as shown in Figure 3B.Horizontal axis in Fig. 3 B is deflection, and the longitudinal axis is mPCRP value, the circle in figure That is position of 36 mPCRP in figure, curve is mRCRP curve.The peak-peak of the defocusing amount curve is denoted as Vmax, The maximum value of defocusing amount after Vmax, that is, moulding on cornea, the maximum defocus amount alternatively referred to as on cornea.

To each patient, the model of an accurate calculation mPCRP can establish according to the defocusing amount curve of fitting: MRCRP=M+F1+F2.Specifically can be used multiple linear regression detection model, correlative factor includes equivalent concave-sphere, lens orientation, Astigmatism and cornea eccentricity etc..R2=0.93 ± 0.06 (mean value 0.94).The regression analysis of line row is carried out to variable in statistics, When carrying out parameter Estimation using least square method, R2 is the ratio of regression sum of square and total sum of squares of deviations, indicates that total deviation is flat The ratio that side can be explained in by regression sum of square, this ratio is bigger, and model is more accurate, and regression effect is more significant.

Shown in Figure 4, this model includes three parts: M represents average refractive power, this value and patient-worn angle Initial equivalent spherical mirror before film moulding mirror is related, shown in FIG as horizontal dotted line；F1 is a sine curve, can be with table It is shown as (Mean*f1*sin (x+phase1)), there is a peak value in 360 degree of direction angle ranges, F1AmpF2 is the maximum of F1 Value；F2 is a cosine curve, can be expressed as (Mean*f2*sin (2*x+phase2)), have in 360 degree of direction angle ranges Two peak values, F2Amp are the maximum value of F2.Studies have shown that the size of amplitude f1 and the asymmetry of lens orientation of F1 (are such as worn Partially etc.) related.And the peak value f2 of F2 is related with corneal astigmatism.The value of three parts design parameter can according to defocusing amount curve in model To be calculated.The i.e. mRCRP curve that three parts are superimposed, it is indicated by the solid line in figure.Its maximum value is Vmax, minimum value For Vmin.

After wearing 1 year, biological mechanics is measured to each patient, using 0.3mm as judging that myopia controlled whether The axis oculi of effect increases threshold value.The result shows that 40 patients have obtained effective myopia control in 55 patients, increase within axis oculi 1 year Length≤0.3mm, 15 patient's myopia control undesirable, 1 year growth > 0.3mm of axis oculi.By the result of myopia control success or not With the mRCRP curve binding analysis of each patient it can be found that Vmax is bigger on the mRCRP curve of patient, success rate is higher. As shown in figure 5, its horizontal axis indicates the size of Vmax, the longitudinal axis indicates the length that axis oculi increases, the corresponding patient of each circle, position Corresponding in 0.3mm line circle below is that myopia controls successful patient, and corresponding circle more than 0.3mm line is near-sighted control Make the patient of failure.

It is the relation curve of Vmax and myopia control success rate shown in Fig. 6, which shows the increase with Vmax, closely Success rate depending on controlling increases with it (p < 0.05).When Vmax≤1.2D, only 20% patient's success；When Vmax >=3.5D, Have more than 50% patient's success；Vmax >=4.5D has more than 80% patient's success；When Vmax >=5D, 90% is had more than Patient's success.It is assessed according to this statistical data using Vmax according to this relationship, when Vmax≤1.2D, it is believed that close There is 20% probability effective depending on control；When Vmax >=3.5D, myopia control has 50% or more probability effective；Vmax >=4.5D, Myopia control has 80% or more probability effective；When Vmax >=5D, myopia control has 90% or more probability effective.

Above-mentioned data are only exemplary, and the analysis method or similar method proposed according to the application can carry out more The test of more, range wider (children with myopia of such as country variant), the data statistics tested according to these obtain Vmax and myopia It controls the specific data such as corresponding relationship of success rate to be not necessarily identical, this is normal phenomenon.

By taking threshold value is taken as 4.5D as an example, the mRCRP curve established for each patient is controlled whether successfully to be combined with its myopia Analysis, it has also been found that:

If M value is larger, although mRCRP curve does not fluctuate, the defocusing amount of each position be can achieve on cornea 4.5D still can effectively control myopia as shown in Figure 7 A at this time.

If M value is smaller, and the fluctuation of mRCRP curve is small, does not have the defocusing amount of any point to can achieve 4.5D on cornea, As shown in Figure 7 B, at this time without control effect.

If M value is in mean value, but the fluctuation of mRCRP curve is less, and not having defocusing amount a little on cornea is more than 4.5, such as Shown in Fig. 7 C, control effect is bad at this time.

If M is smaller, but mRCRP fluctuation is larger, some defocusing amount put is more than 4.5D on cornea, such as Fig. 7 D institute Show, control effect is preferable at this time.

In the model mRCRP=M+F1+F2 established for patient, M value is related with the degree of myopia.For low medium myopia, M Value can be lower, and according to model, the increase of F1 and F2 can be such that Vmax increases, and improves near-sighted control effect.So for periphery defocus Influence to myopia control, applicant propose new theory: retina is sensitive to the extreme value of periphery defocus, does not need all positions Defocusing amount it is identical, as long as maximum defocus amount Vmax is sufficiently large, that is, myopia can be effectively controlled.And Vmax is bigger, myopia control Success rate is higher, by comparing the Vmax of patient and the defocus threshold value (such as 3.5D, 4.5D) of setting, can effectively assess close Depending on control effect.As long as in addition, studies have shown that the cornea after moulding there is a point to reach defocus threshold value can be according to the defocus threshold The success rate of its myopia control of value assessment.And in the case where constant from threshold threshold value, if defocusing amount reaches defocus threshold on cornea The region (can be indicated with corresponding central angle) of value is bigger, and success rate can also correspondingly increase.

Although the studies above is carried out by source of Ortho-K, the model established, and the periphery proposed The fluctuation and threshold value of defocus are applicable in the design of periphery defocus eyeglass.Above-mentioned theory is that lens design gives important enlightenment: In the case that defocus total amount is constant, the uneven design for carrying out periphery defocus can increase Vmax, advantageously to myopia control.This Lens design to either frame eyeglasses or contact lens is all to have very great directive significance.

Furthermore above-mentioned analysis shows, in the model mRCRP=M+F1+F2 established for patient, the amplitude of F1 and F2 and myopia Control effect is also relevant, F1, and the one of value of F2 is big or all big, and myopia control has higher success rate.It is readily appreciated that, F1 Big with the amplitude of F2, then the peak-peak Vmax of mRCRP is generally also larger.According to Fig. 4 as can be seen that F1 and F2 amplitude not In the case where change, if one in a peak value of F1 and two peak values of F2, on same direction angle, the two can be superimposed Get up, then the Vmax obtained is maximum, and near-sighted control effect is best.Conversely, obtained Vmax will become smaller, near-sighted control effect It can decline.As previously mentioned, F1 is related to the eyeglass of wearing, F2 is related to corneal astigmatism, then this is just lens design and wearing It gives another important enlightenment: being directed at the maximum defocus amount on eyeglass bring maximum defocus amount and cornea, may be implemented Extreme value superposition, is beneficial to improve near-sighted control effect.

For this purpose, exemplary embodiments of the present invention provide a kind of eyeglass of periphery defocus, eyeglass can be round but not Being must be so.As shown in Figure 8 A, the eyeglass 1 includes central optical zone 11, and annular is provided with outside the central optical zone There is variation on circumferential direction in defocus area 12, the defocusing amount in the defocus area.In principle, defocusing amount greatly for control myopia progression compared with To be advantageous, but if defocusing amount is excessive, the discomfort of A nearsighted person will cause, such as generate dizzy reaction, also will cause the visual field The adverse effect such as limited, visual impairment and Contrast sensitivity visual acuity decline.By variation of the defocusing amount on circumferential direction, maximum from In the case that coke amount is constant, the defocusing amount in part defocus area can be reduced, to subtract while guaranteeing near-sighted control effect These light adverse effects.

In the exemplary embodiment shown in Fig. 8 A, the central optical zone 11 of the eyeglass 1 is circular fixed-focus area, described Eyeglass 1 includes a defocus area with the annular shape that center of lens (" O " point in figure) is the center of circle.But the application is not limited to This, eyeglass also may include multiple using center of lens as the circular defocus area in the center of circle, and as shown in Figure 8 B, eyeglass 1 includes two Defocus area 12a, the 12b of a annular shape, as illustrative, interval setting between the Liang Ge defocus area 12a, 12b, centre in figure It is also possible to the fixed-focus area that defocusing amount is 0.In other embodiments, more defocus areas can be set.There are multiple defocus areas In, can only have part defocus area to there is variation on circumferential direction, as long as there is a defocus area to there is variation on circumferential direction, that is, fall Enter the coverage area of the application.

The shape not necessarily annulus in the application defocus area is also possible to elliptical ring or other off-gauge cyclic annular knots Structure.The position that some in defocus area is put can with deflection of this on the coordinate system using center of lens as the center of circle and it is radial away from From indicating.Radial distance refers to the point to the distance of center of lens.In Fig. 8 A, defines 0 ° of deflection and be directed toward right side, P point in Fig. 8 A Deflection be expressed as α.There is the defocusing amount in variation namely defocus area on circumferential direction at 360 degree in the defocusing amount in the defocus area There is variation, in other words, the defocus in from 0 to 360 ° of variation of deflection, in defocus area on direction angle in direction angle range There is variation in amount.The variation can be gradual change, and there are one or two or more a peak values within the scope of 360 °.There may also be Mutation such as stepped transition, the application, which does not do this, to be limited to.On a deflection in same defocus area, radial distance is different The defocusing amount of point there may also be fluctuations, can indicate that the defocus area exists with the maximum value of the defocusing amount on direction angle at this time Defocusing amount on direction angle.

Always from the diameter of eyeglass, there are when a defocus area, defocusing amount can have on one with the increase of radial distance It rises, the variation of decline.There are when multiple defocus areas, there can be the process of multiple up and down.The defocus in the region outside defocus area Amount can be less than defocus area or equal to 0, can also be equal to or more than defocus area, for example, increase of the defocusing amount with radial distance. It can be remained unchanged after the last one defocus area rises or continue to increase.

In the exemplary embodiment shown in Fig. 8 A, the eyeglass includes Warning Mark 13, and the Warning Mark is for referring to Show the deflection in the defocus area at the maximum position of defocusing amount.The maximum position of defocusing amount can be a point or packet A region for including multiple points, if there is multiple position defocusing amounts are maximum, can choose a position indicate or each Position uses a Warning Mark 13 to indicate respectively.The Warning Mark can be integrally formed with eyeglass, or is attached to described On eyeglass, or it is embedded in the eyeglass.For example, the Warning Mark can be a protrusion or a groove on eyeglass, or It is attached to the marker of eyeglass corresponding position or the marker even bubble in eyeglass.Although in the example in Fig. 8 A, indicateing arm Will 13 is upward arrow, but the shape of Warning Mark is also possible to strip, dotted or any other symbol etc..Indicateing arm Will can directly indicate the maximum position of defocusing amount in defocus area, as the arrow in figure is used to indicate defocusing amount maximum in defocus area Position appear on 90 ° of deflections.When the maximum position of defocusing amount is a region in defocus area, the area can be generally indicated The deflection of the center in domain, but allow to have deviation, do not influence using.Warning Mark can also come in an indirect way It indicates the maximum position of defocusing amount, is such as directed toward its opposite direction, etc..After having Warning Mark on eyeglass, it can be convenient A nearsighted person is when wearing (when especially wearing of contact lens), according to the Warning Mark by the maximum position of eyeglass defocusing amount With the maximum position alignment of defocusing amount on cornea, realize that the defocusing amount on eyeglass and cornea carries out extreme value superposition, so that the two structure At the maximum defocus amount of dioptric system as reach maximum as possible, to improve the effect of myopia control.Defocusing amount master on cornea If corneal astigmatism bring, the maximum position of defocusing amount is generally present near 90 ° of deflections and 270 ° of deflections.It is quasi- True position can be determined by detection.

In exemplary embodiments of the present invention, in the defocus area maxima and minima of defocusing amount difference be not less than 1D or 2D or 3D or 4D or 5D.This difference reflects the amplitude that defocusing amount fluctuates in defocus area, can be according to defocus threshold value, mirror Piece degree, patient tolerance level etc. because usually selecting.

In an exemplary embodiment of the invention, the eyeglass is the eyeglass of contact lens, and the defocus area is located at mirror Piece center is the center of circle, in a circular annular region of interior diameter 3mm~4mm, 5~8mm of overall diameter.It is real in another exemplary of the present invention Apply in example, the eyeglass be frame eyeglasses eyeglass, the defocus area be located at using center of lens as the center of circle, interior diameter 6mm~ 8mm, 8~12mm of overall diameter a circular annular region in.For eyeglass, defocus area needs to exclude the central optical on eyeglass It area and myopia is controlled influences very little or region such as throw light without influence and cannot be efficiently entering the region of pupil.Some frames The defocusing amount of lens edge is made very big by frame glasses, but in the defocusing amount of above-mentioned zone and myopia that is little, and not had Control effect.It, need to be according to the range in the defocus region of above-mentioned setting thus when designing and calculating the defocusing amount in eyeglass defocus area It is designed and calculates, to reach effective near-sighted control effect.It should be noted that removing defocus area in above-mentioned circular annular region It outside, can also include the perimeter of central optical zone and defocus area.

In an exemplary embodiment of the invention, the eyeglass is the eyeglass of contact lens, and the defocus area includes any Position defocusing amount is not less than the area Gao Jiao of 2D or 2.5D or 3D or 3.5D or 4D or 4.5D or 5D or 5.5D.Another show in the present invention In example property embodiment, the eyeglass is the eyeglass of frame eyeglasses, and the defocus area includes any position defocusing amount not less than 2.5D Or the area Gao Jiao of 3D or 3.5D or 4D or 4.5D or 5D or 5.5D or 6D.

In this application, Gao Jiaoqu is can to set in defocus area for reaching the region of desired near-sighted control effect The regional determination that any position defocusing amount in defocus area is not less than the defocus threshold value is the area Gao Jiao by one defocus threshold value.This Shen Please in, a point is also considered as a kind of special region.The eyeglass and eyeball of frame eyeglasses have certain distance, the defocusing amount on eyeglass The effectiveness that can be played is less than contact lens, thus when determining the area Gao Jiao, it can choose when other conditions are identical higher Some threshold values.

In one example, exist for determining that the defocus threshold value in the area Gao Jiao can choose corresponding myopia control success rate 50% or more defocus threshold value for example above-mentioned 3.5D, 4D, 4.5D etc..It, can be by the defocusing amount of eyeglass after wearing glasses It carries out extreme value with the defocusing amount of patient's cornea to be superimposed, so that the maximum defocus amount of the dioptric system of eyeglass and cornea composition is greater than mirror The maximum defocus amount of piece, thus in lens design, the defocusing amount in the area Gao Jiao of design might be less that 3.5D.Specific defocus The selection of threshold value can match suitable feelings to eyeglass according to expected myopia control success rate, the corneal astigmatism situation of patient, patient Condition, patient are to degree of the tolerance level of high defocusing amount, the size in the clear visual field, patient's myopia etc. because usually comprehensively considering.

For the embodiment shown in Fig. 8 A, the area Gao Jiao includes a ring segment 121 being arranged in the defocus area, but It can also be with more than two ring segments.In addition, the shape in the area Gao Jiao is also possible to dotted or other shapes.The application to this not Limitation.

In an exemplary embodiment of the invention, the area Gao Jiao falls into one or two or three or more fan-shaped regions Interior, the fan-shaped region is using center of lens as the center of circle, and the sum of central angle is not more than 30 ° or 60 ° or 90 ° or 120 ° or 150 °. Two sides of the fan-shaped region that the above-mentioned area Gao Jiao is fallen into are two points that deflection is minimum and maximum in center of lens and the area Gao Jiao Two lines.When there is multiple fan-shaped regions, multiple fan-shaped region can be uniformly distributed such as about center of lens in defocus area It is in a center of symmetry, or diameter about central optical zone is at axial symmetry, but not limited to this.The fan-shaped region that the area Gao Jiao is fallen into The sum of central angle is smaller, illustrates that the lesser region of other defocusing amounts (being referred to as the area Di Jiao) is larger on eyeglass, is conducive to mention The comfort level that height is worn expands the clear visual field, reduces influence of the high defocusing amount to eyesight.

In an exemplary embodiment of the invention, the defocus area includes one or two or three or more the areas Gao Jiao, institute Ring segment is not less than 5 ° or 15 ° or 30 ° or 45 ° or 60 ° with respect to the sum of central angle of center of lens where the area Shu Gaojiao.Shown in Fig. 8 A Example in, have an area Ge Gaojiao in eyeglass 1, where ring segment with respect to the central angle of center of lens be θ.The sum of above-mentioned central angle It is bigger, it indicates large percentage of the area Gao Jiao in the visual field, is conducive to near-sighted control, but the clear visual field can be reduced.The area Gao Jiao is corresponding Central angle can be expressed as the angle of two line of the two minimum and maximum points of deflection in the area Gao Jiao to center of lens.

Divide in above-mentioned two exemplary embodiment plus the maximum value and minimum value of the corresponding central angle in the area Gao Jiao are carried out Limitation, can be according to patient when actually matching mirror the case where the suitable value of selection one.

In an of the invention exemplary embodiment, the defocus area include the eyeglass outer surface formed in flowering structure One kind or any combination:

The curved surface of defocusing amount gradual change；

Fixed-focus region；And

Dot bulge.

In one example, the defocus area includes the curved surface of the defocusing amount gradual change formed in the eyeglass outer surface.? In one example, the defocus area includes that (defocusing amount is permanent in region in multiple fixed-focus regions of eyeglass outer surface formation It is fixed), the defocusing amount in multiple fixed-focus regions is different, is in step-like transition between multiple fixed-focus regions.In one example, it is described from Jiao Qu includes the dot bulge that eyeglass outer surface portion subregion (in the ring segment that such as central angle is 90 degree) is formed, the point Shape protrusion constitutes the area Zhong Gaojiao, defocus area.

Above structure can also combine, for example, in one example, the defocus area is included in the eyeglass appearance One or more fixed-focus regions that face is formed, the fixed-focus region may be constructed a part in the area Gao Jiao but not limited to this, other Region uses the curved-surface structure of defocusing amount gradual change.In one example, the defocus area is included in the eyeglass outer surface and is formed Defocusing amount gradual change curved surface, including one or more areas Gao Jiao, and be additionally provided with one at least one area Gao Jiao Or multiple dot bulges, bigger Vmax value can be obtained in the area Gao Jiao by this composite construction.Etc..In eyeglass outer surface Part astigmatism may be brought when forming the curved surface of defocusing amount gradual change, but a degree of astigmatism is acceptable, is conducive to Myopia control.

In an exemplary embodiment of the invention, the defocusing amount in the defocus area forms a peak on 0~360 ° of deflection Value, the peak value are not less than 2D or 2.5D or 3D or 3.5D or 4D or 4.5D or 5D or 5.5D；It is real in another exemplary of the present invention It applies in example, the defocusing amount in the defocus area is formed on 0~360 ° of deflection is spaced apart from each other 120 °~240 ° of two peak values, In first peak value be not less than 2D or 2.5D or 3D or 3.5D or 4D or 4.5D or 5D or 5.5D, second peak value and first peak It is worth equal, or less than first peak value.It the case where only one above-mentioned peak value, is equivalent to and devises on eyeglass for generating The structure of F1 in above-mentioned model, and the case where there are two peak value, it is equivalent to and is devised on eyeglass for generating in above-mentioned model The structure of F2 is in the defocus change application to lens design for generating script corneal astigmatism.Because of the big portion of the corneal astigmatism of people In the range of being appeared at centered on 90 ° of deflections and 270 ° of deflections in the case of point (positive and negative 45 ° or so), above-mentioned two peak The design of value and its interval angles helps to realize the extreme value superposition of the defocusing amount of eyeglass and cornea, generates bigger Vmax value, Expand range of the area Gao Jiao in the visual field, reaches preferably near-sighted control effect.

The eyeglass of the periphery defocus of the above embodiment of the present invention, using defocusing amount in the circumferential structure changed and favorably In the new structure design such as the structure that eyeglass, cornea defocusing amount extreme value are superimposed, preferably near-sighted control effect can achieve.

In an of the invention exemplary embodiment, a kind of frame eyeglasses, including mirror holder and two eyeglasses are additionally provided, described two At least one of a eyeglass uses the eyeglass of any periphery defocus as described above.In one example, in the eyeglass Defocus area includes an area Ge Gaojiao, and the area Gao Jiao is located above or below center of lens.In another example, the eyeglass In defocus area include the area Liang Gegaojiao, one of them is located at the top of center of lens, another is located at the lower section of center of lens； Wherein, the area Gao Jiao refers to that any position defocusing amount is not less than 2.5D or 3D or 3.5D or 4D or 4.5D or 5D in the defocus area Or the region of 5.5D or 6D.In the application, if the upward vertical line by center of lens passes through the area Gao Jiao, then it is assumed that should The area Gao Jiao is located at the top of center of lens, if the downward vertical line by center of lens passes through the area Gao Jiao, then it is assumed that should The area Gao Jiao is located at the lower section of center of lens.The area Gao Jiao is arranged in the above and or below of center of lens, also in that considering The corneal astigmatism of people appeared at centered on 90 ° of deflections and 270 ° of deflections in most cases in the range of (positive and negative 45 ° Left and right), this set helps to realize the extreme value superposition of the defocusing amount of eyeglass and cornea.Corneal astigmatism meeting for a minority It appears in other angles, this part can be met by manufacturing, selecting eyeglass of the area the Gao Jiao design in other angles Man's Demands.

It is the design for periphery defocus eyeglass above, above-mentioned theory is also applied to Ortho-K eyeglass by the application In design, to provide a kind of eyeglass 2 of Ortho-K, as shown in Figure 9 and Figure 10, the eyeglass include base curve area (i.e. Central optical zone) 21, reversion arc area 22, the positioning arc area 23 and area Zhou Hu 24, wherein in the base curve area 21 and reversion arc area 22 At least one of there is structure change in the circumferential.Here circumferential variation, refers in 0~360 degree using center of lens as the center of circle There are structure changes in direction angle range.Ortho-K itself is not corrected defects of vision directly, but by between cornea moulding It connects and corrects defects of vision and inhibit myopia progression.Traditional design is to reach defocus based on making cornea be deformed into the shape in base curve face Purpose.And the present embodiment promotes the cornea after moulding to there is wave in the circumferential by the special designing in base curve area or reversion arc area It is dynamic, expected maximum defocus amount can be reached.

In an exemplary embodiment of the invention, the reversion arc area includes at least two ring segments, shows two in figure, In the height of a ring segment 221 be greater than other ring segments 222, see the A-A section of Fig. 9 eyeglass shown in Figure 10, cornea moulding fastens On cornea 3, the height that the height at first ring segment 221 in arc area is greater than at other ring segments 222 is inverted.Increase the height of segmental arc The space that position cornea deformation can be improved is conducive to improve the defocusing amount of corresponding position on cornea after moulding.The present invention In another exemplary embodiment, reversion arc area can also be set to the aspherical shape of highly gradient in the circumferential, make cornea The circumferential variation of defocusing amount occurs after moulding for the upper position for corresponding to reversion arc area, generates preferably near-sighted control effect.Separately Outside, reversion arc area can also do Widening Design, such as in the case where guaranteeing positioning stablity, by reversion arc area width from routine 1mm~2mm increases to 1.2mm to 2.2mm or bigger.The width for inverting arc area increases, and helps to improve reversion arc area corresponding angles The defocusing amount of film location.For base curve area, in the case where guaranteeing that vision correction reaches requirement, asymmetrical knot can also be used Structure design is to achieve the effect that make cornea after moulding that defocusing amount variation occurs in the circumferential.

Because defocusing amount is still not clear with being associated with for myopia control, in practice before, acquisition cornea was only considered On defocus total amount.The new theory of the above-mentioned defocus and myopia control that are proposed according to the application, the embodiment of the invention provides The method for obtaining defocusing amount parameter below controls associated defocusing amount parameter for fields such as mirrors with myopia can get It closes.

As shown in figure 11, an exemplary embodiment of the invention provides a kind of method for obtaining defocusing amount parameter, comprising:

Step 110, under user's naked state, the defocusing amount of multiple sampling points on user's cornea, the sampling point are acquired It is distributed in using corneal center as on the multiple directions angle in the coordinate system of origin；

The realization of cornea map instrument can be used in the acquisition of defocusing amount on cornea, and corneal topographers are a kind of auxiliary by computer It helps, so that the novel device of anterior corneal surface curvature map be presented, corneal topography can be generated.It can be counted according to corneal topography Calculate the defocusing amount of the sampling point selected on cornea.

Step 120, defocusing amount parameter is obtained according to the defocusing amount of sampling points multiple on the cornea.

It is described under user's naked state in an exemplary embodiment of the invention, refer to before A nearsighted person is with mirror Naked state under, the obtained defocusing amount parameter is used for as the A nearsighted person with mirror；It is real in another exemplary of the present invention It applies in example, it is described under user's naked state, refer in A nearsighted person through Ortho-K to the naked eye after cornea moulding Under state, the obtained defocusing amount parameter is used to assess the A nearsighted person and wears the myopia control effect after Ortho-K Fruit.The Ortho-K that A nearsighted person described in the present embodiment wears can be the Ortho-K of the embodiment of the present invention, can also be with It is for example traditional Ortho-K of other Ortho-Ks.

In an exemplary embodiment of the invention, the defocusing amount parameter includes one of following parameter or any combination:

The defocusing amount of multiple sampling points on the cornea；

Maximum defocus amount on the cornea；

The location information where maximum defocus amount on the cornea；

The comparison result of one or more defocus threshold values of maximum defocus amount and setting on the cornea；

One of the presence or absence of effective defocus region, quantity, size and location or much information；

Wherein, the maximum defocus amount on the cornea is determined according to the defocusing amount of sampling points multiple on the cornea, described to have Effect defocus region refers to that any position defocusing amount is not less than the region of corresponding defocus threshold value on the cornea, and the defocus threshold value is not Less than 3.5D or 4D or 4.5D or 5D or 5.5D.

In one example, the maximum defocus amount on the cornea is determined according to the defocusing amount of sampling points multiple on the cornea, Include:

Using the maximum value of the defocusing amount of sampling points multiple on the cornea as the maximum defocus amount on the cornea.If sample Point is more than enough, and this mode also has higher accuracy.The location information where the maximum defocus amount on the cornea is exactly at this time The location information of sampling point with the maximum defocus amount；Or

Defocusing amount on each deflection is determined according to the defocusing amount of the sampling point on deflection each in the multiple deflection Maximum value；The defocusing amount carried out curve fitting to obtain on 0 °~360 ° deflections according to defocusing amount on each deflection is bent Line；The maximum defocus amount peak-peak of the defocusing amount curve being determined as on the cornea.

In addition to the above method, in one example, multiple sampling points on the cornea are evenly arranged on all films, can also basis The multiple sampling point carries out surface fitting, and the peak-peak for the curved surface that fitting is obtained is as the maximum defocus on the cornea Amount.Specific calculation the application is not done and is limited to.

Selection for the sampling point on cornea can have different modes.For example, can be at least 18 equally spaced sides Sampling point is selected on angle, and the defocusing amount of at least three sampling point is acquired on each deflection.It for another example, can also be equally spaced at 360 On deflection, the defocusing amount of at least 50 sampling points is acquired on each deflection.It specifically can be according to actual needs such as measurement accuracy Requirement set.

An exemplary embodiment of the invention additionally provides a kind of method for obtaining defocusing amount parameter, as shown in figure 12, comprising:

Step 210, in A nearsighted person's wearing of contact lens, acquire A nearsighted person's cornea and eyeglass composition bend The defocusing amount of multiple sampling points on photosystem, the sampling point are distributed in using corneal center as the multiple directions angle in the coordinate system of origin On；

Cornea map instrument also can be used in the defocusing amount of multiple sampling points on above-mentioned dioptric system or similar detection device comes Detection obtains.The defocusing amount of multiple sampling points refers to the defocus of multiple sampling points in dioptric system front surface on the present embodiment dioptric system Amount.

Step 220, defocusing amount parameter is obtained according to the defocusing amount of sampling points multiple on the dioptric system.

The defocusing amount parameter that this step obtains is the defocusing amount parameter on the dioptric system.

The eyeglass of the application periphery defocus can be used in the Corneal Contact glasses in the present embodiment, can also not use The eyeglass of the application periphery defocus.

In an of the invention exemplary embodiment, the obtained defocusing amount parameter includes one of following parameter or any Combination:

Maximum defocus amount on the dioptric system；

The comparison result of one or more defocus threshold values of maximum defocus amount and setting on the dioptric system；

Wherein, the maximum defocus amount on the dioptric system is true according to the defocusing amount of sampling points multiple on the dioptric system Fixed, the defocus threshold value is not less than 3.5D or 4D or 4.5D or 5D or 5.5D.Determine the side of the maximum defocus amount on dioptric system The method that method is referred to the maximum defocus amount on cornea identified above, which is not described herein again.

In one example, a defocus threshold value is set, such as judging that myopia controls whether successful threshold value, such as 4.5D, and in another example, then set multiple defocus threshold value such as 3.5D and 4.5D or more, by maximum defocus amount with it is multiple Defocus threshold value comparison can more accurately indicate the section where maximum defocus amount, quantify to the validity of myopia control Assessment.

In an of the invention exemplary embodiment, the defocusing amount that is obtained according to the defocusing amount of sampling points multiple on the dioptric system Parameter includes: to determine the presence or absence of effective defocus region according to the defocusing amount of the multiple sampling point, and one in quantity, size and location Kind or much information, wherein effective defocus region refers to that any position defocusing amount is not less than corresponding on the dioptric system The region of defocus threshold value, the defocus threshold value are not less than 3.5D or 4D or 4.5D or 5D or 5.5D.

In the present embodiment, according to the difference of corresponding defocus threshold value, effective defocus region can have one or more, difference Effective defocus region be to be obtained using different defocus threshold decisions.For example, can have corresponding to defocus threshold value 3.5D's Effective defocus region, effective defocus region, etc. corresponding to defocus threshold value 4.5D.The quantity in same effective defocus region can To there is one or more.There are effective defocus region, just illustrate that the maximum defocus amount on dioptric system is greater than effective defocus area The corresponding defocus threshold value in domain can carry out myopia control validity more smart in conjunction with the size information in effective defocus region Thin assessment.The size information in effective defocus region can use the size of the corresponding central angle in the effective defocus region, Huo Zheyou The area in defocus region etc. is imitated to indicate.Other than size information, the other information in effective defocus region can be combined with as having The relevance of body position information, these location informations and myopia control validity for obtaining in conjunction with statistical analysis is finely commented Estimate.

In an exemplary embodiment of the invention, the glasses that the A nearsighted person wears are contact lens, and the cornea connects Mirror is touched using any eyeglass as described in the embodiments of the present invention, the eyeglass includes a Warning Mark, and the Warning Mark is used for Indicate the maximum position of defocusing amount in the defocus area of the eyeglass；On acquiring the dioptric system defocusing amount of multiple sampling points it Before, the method also includes: according to the Warning Mark of the eyeglass, the wear angle of the eyeglass is calibrated, is made described The position where maximum defocus amount in the defocus area of eyeglass on A nearsighted person's cornea described in the maximum position alignment of defocusing amount.Cause When wearing for A nearsighted person, the near-sighted control effect to have obtained should be first calibrated, thus before measuring defocusing amount parameter It is also required to carry out above-mentioned calibration, help to obtain more accurate data.The calibration of position can be in center of lens and cornea After the alignment of center, eyeglass is rotated into an angle using center of lens and the line of corneal center as axis to realize.

After obtaining above-mentioned defocusing amount parameter, the obtained defocusing amount parameter wears institute for assessing the A nearsighted person The near-sighted control effect of contact lens is stated, such as assesses the contact lens of the traditional periphery defocus of patient-worn to myopia control The effect of system, if the ineffective eyeglass that can replace other eyeglasses such as the application periphery defocus in time.

In an exemplary embodiment of the invention, the defocusing amount parameter includes the maximum defocus amount on the cornea, or The comparison result of one defocus threshold value of maximum defocus amount and setting on cornea described in person；It is described according to the defocusing amount parameter Determine myopia control effect, comprising: judge whether the maximum defocus amount on the cornea is not less than according to the defocusing amount parameter The defocus threshold value, if so, determining that myopia control effect is effective, if not, determining that myopia control effect is invalid；Or

The defocusing amount parameter include the maximum defocus amount on the cornea or the maximum defocus amount on the cornea and The comparison result of multiple defocus threshold values of setting；It is described that near-sighted control effect is determined according to the defocusing amount parameter, comprising: according to The defocusing amount parameter judges whether the maximum defocus amount on the cornea is not less than one or more defocus threshold values, if so, root Corresponding myopia control success rate is searched according to a defocus threshold value maximum in one or more of defocus threshold values, according to described Myopia control success rate determines near-sighted control effect.

In an exemplary embodiment of the invention, the defocusing amount parameter includes at least the presence or absence of effective defocus area and size Information；It is described that near-sighted control effect is determined according to the defocusing amount parameter, comprising: as there are effective defocus areas on the cornea Domain is then searched according to effective corresponding defocus threshold value in defocus region and the size information in effective defocus region corresponding Myopia control success rate determines near-sighted control effect according to the myopia control success rate.

It is described that near-sighted control effect is determined according to the myopia control success rate, comprising: directly to use in above-described embodiment The myopia controls success rate to indicate near-sighted control effect；Alternatively, it is pre- to judge whether the myopia control success rate is not less than The success rate of phase, if so, determining that myopia control effect is effective, if not, determining that myopia control effect is invalid.

An exemplary embodiment of the invention additionally provides one kind with mirror method, as shown in figure 13, comprising:

Step 310, A nearsighted person is obtained with the naked eye shape before mirror according to method either described in the above embodiment of the present invention Defocusing amount parameter under state；

It step 320, is that the A nearsighted person matches mirror according to the defocusing amount parameter.

Above-mentioned can be with mirror chooses a secondary suitable glasses from the glasses manufactured, is also possible to for A nearsighted person Design the new glasses of a personalization.The periphery defocus eyeglass of the application can be used in the glasses, and tradition also can be used Periphery defocus eyeglass.

In an exemplary embodiment of the invention, the defocusing amount parameter includes maximum defocus amount and its institute on the cornea Location information；It is that the A nearsighted person matches mirror according to the defocusing amount parameter, comprising: match periphery for the A nearsighted person The contact lens of defocus or the eyeglass of frame eyeglasses, so that maximum defocus amount and the eyeglass on A nearsighted person's cornea After the defocusing amount contraposition superposition of corresponding position, the defocus threshold value of obtained sum not less than setting, wherein the defocus threshold value is not small In 3.5D or 4D or 4.5D or 5D or 5.5D, defocus threshold value specifically can be according to the resistance to of desired near-sighted inhibitory effect and patient It is spent etc. one selected.The eyeglass of contact lens is directly fitted with cornea, and needing before contraposition will be in center of lens and cornea Heart alignment.To frame eyeglasses, eyeglass and cornea have certain distance, can be directed at center of lens with cornea before contraposition, other positions The corresponding relationship set is referred to original rule.

In an exemplary embodiment of the invention, the defocusing amount parameter includes the defocusing amount letter of multiple sampling points on the cornea Breath；It is that the A nearsighted person matches mirror according to the defocusing amount parameter, comprising: the cornea of periphery defocus is matched for the A nearsighted person The eyeglass of contact lense or frame eyeglasses, defocusing amount and institute when so that the A nearsighted person wearing the eyeglass, on the cornea After the defocusing amount contraposition superposition for stating eyeglass corresponding position, at least there is the size in effective defocus region and effective defocus region It meets the requirements, wherein effective defocus region refers to that any position defocusing amount is not less than the region of corresponding defocus threshold value, described Defocus threshold value is not less than 3.5D or 4D or 4.5D or 5D or 5.5D, specifically can be according to desired near-sighted inhibitory effect and patient Tolerance level etc. select a defocus threshold value.

In one example, the size in effective defocus region is met the requirements, comprising: effective defocus region meets Following one or more condition:

Ring segment is not less than an angle threshold, the angle with respect to the central angle of center of lens where effective defocus region Threshold value is no less than a setting value of 5 ° or 15 ° or 30 ° or 45 ° or 60 °；

Area threshold of the sum of the area in effective defocus region not less than setting.

In an exemplary embodiment of the invention, the eyeglass is using any eyeglass described in the embodiment of the present invention；Carry out institute Before stating contraposition superposition, the method also includes: the wear angle of the eyeglass is calibrated and (can be completed in software), Where making the maximum defocus amount in the defocus area of the eyeglass on A nearsighted person's cornea described in the maximum position alignment of defocusing amount Position.It is first aligned before superposition, available more accurate defocus data reduces the value of required maximum defocus amount.

In an exemplary embodiment of the invention, the method also includes: obtain the diameter of the pupil of the A nearsighted person；For The A nearsighted person matches the eyeglass of frame eyeglasses or contact lens, wherein determines the mirror according to the diameter of the pupil The diameter of the diameter of the central optical zone of piece, pupil is bigger, it is determined that the eyeglass central optical zone diameter it is bigger.This Place is that personalized design is carried out according to the pupil size of patient.For example, the diameter of pupil can be divided into 5 it is of different sizes Grade, and the diameter of the central optical zone of eyeglass is also classified into 5 grades of different sizes.If the diameter of pupil is the smallest Level-one, then selecting the diameter of central optical zone is that the eyeglass of minimum level-one selects if the diameter of pupil is the largest level-one The diameter of central optical zone is the eyeglass of maximum level-one.The rest may be inferred.In other examples, the diameter of pupil is classified and mirror The graduate quantity of piece institute does not need equal.And the diameter of pupil directly can also divide pupil diameter regardless of grade For multiple sections, each section corresponds to a kind of diameter of eyeglass central optical zone, also possible.

Judge that an Ortho-K controls whether effectively, to need to measure and wear Ortho-K one to patient's myopia at present The variation of axis oculi after year, and assess the positioning and eyesight primarily directed to Ortho-K.This needs very more time, right The opportunity effectively treated using other methods may have been delayed in controlling invalid patient.

For this purpose, an exemplary embodiment of the invention provides a kind of method for assessing near-sighted control effect using defocusing amount, As shown in figure 14, comprising:

Step 410, A nearsighted person is obtained through Ortho-K according to method either as described in the above embodiment the present invention To the defocusing amount parameter obtained under the naked state after cornea moulding；

Step 420, determine that the Ortho-K controls the myopia of the A nearsighted person according to the defocusing amount parameter Effect.

In an exemplary embodiment of the invention, the defocusing amount parameter includes the maximum defocus amount on the cornea, or The comparison result of one defocus threshold value of maximum defocus amount and setting on the cornea；It is described true according to the defocusing amount parameter Fixed myopia control effect, comprising: judge whether the maximum defocus amount on the cornea is not less than institute according to the defocusing amount parameter Defocus threshold value is stated, if so, determining that myopia control effect is effective, if not, determining that myopia control effect is invalid；Or

The defocusing amount parameter include the maximum defocus amount on the cornea or the maximum defocus amount on the cornea and The comparison result of multiple defocus threshold values of setting；It is described that near-sighted control effect is determined according to the defocusing amount parameter, comprising: according to The defocusing amount parameter judges whether the maximum defocus amount on the cornea is not less than one or more defocus threshold values, if so, root Corresponding myopia control success rate is searched according to a defocus threshold value maximum in one or more of defocus threshold values, according to described Myopia control success rate determines near-sighted control effect.The corresponding myopia control success rate of defocus threshold value can be according to corresponding experiment Data statistics is obtained and is saved.

In an exemplary embodiment of the invention, the defocusing amount parameter includes at least the presence or absence of effective defocus area and size letter Breath (when without effective defocus area, size information etc. is sky information)；It is described that myopia control effect is determined according to the defocusing amount parameter Fruit, comprising: if there are effective defocus regions on the cornea, then according to the corresponding defocus threshold value in the effective defocus region and institute The size information for stating effective defocus region searches corresponding myopia control success rate, is determined according to the myopia control success rate close Depending on control effect.Defocus threshold value and the corresponding myopia control success rate of the size information in effective defocus region can be according to corresponding Experimental data is counted to obtain and be saved.If in defocusing amount parameter including multiple effective defocus of corresponding different defocus threshold values Region can find multiple myopia control success rates, therefrom select one to be used to determine near-sighted control effect.For example, according to Effective defocus region of corresponding maximum defocus threshold value and its size information search myopia control success rate, use the myopia found It controls success rate and determines near-sighted control effect, but the application is not limited to this.Can also be will be according to multiple effective defocus regions And its myopia control success rate that size information is found comprehensively considers, and is such as maximized or mean value or minimum value are close to determine Depending on control effect, the application, which does not do this, to be limited to.

It is described that myopia control effect is determined according to the myopia control success rate in the above exemplary embodiments of the present invention Fruit, comprising: directly indicate near-sighted control effect using the myopia control success rate；Alternatively, judge it is described myopia control at Whether power is not less than success in expectation rate, if so, determining that myopia control effect is effective, if not, determining myopia control effect Fruit is invalid.

In an exemplary embodiment of the invention, the assessment of the myopia control effect wears cornea in the A nearsighted person It is carried out in 2 weeks after moulding mirror or in 1 month or in 3 months or in 6 months.

It is different from previous appraisal procedure, the above embodiment of the present invention provides a kind of assess using defocusing amount parameter closely Method depending on controlling validity.And whether to the patient effective, mention if can prejudge Ortho-K in a relatively short period of time High clinical efficiency avoids delaying the means that conditions of patients selects other control myopia.This application provides a kind of new cornea modelings Shape mirror evaluation criteria, has great importance.

The method of the acquisition defocusing amount parameter of the above embodiment of the present invention, the side with mirror method and the near-sighted control effect of assessment Computer equipment can be used to realize in method.As shown in figure 15, the computer equipment includes processor 50, memory 60 And it is stored in the computer program that can be run on the memory 60 and on the processor 50, the processor 50 executes institute The processing of method either as described in the above embodiment the present invention is realized when stating calculation procedure.

An exemplary embodiment of the invention additionally provides a kind of computer readable storage medium, is stored thereon with computer journey Sequence realizes the processing of method either as described in the above embodiment the present invention when the computer program is executed by processor.

It will appreciated by the skilled person that whole or certain steps, system, dress in method disclosed hereinabove Functional module/unit in setting may be implemented as software, firmware, hardware and its combination appropriate.In hardware embodiment, Division between the functional module/unit referred in the above description not necessarily corresponds to the division of physical assemblies；For example, one Physical assemblies can have multiple functions or a function or step and can be executed by several physical assemblies cooperations.Certain objects Reason component or all physical assemblies may be implemented as by processor, such as central processing unit, digital signal processor or micro process The software that device executes, is perhaps implemented as hardware or is implemented as integrated circuit, such as specific integrated circuit.Such software Can be distributed on a computer-readable medium, computer-readable medium may include computer storage medium (or non-transitory be situated between Matter) and communication media (or fugitive medium).As known to a person of ordinary skill in the art, term computer storage medium includes In any method or skill for storing information (such as computer readable instructions, data structure, program module or other data) The volatile and non-volatile implemented in art, removable and nonremovable medium.Computer storage medium includes but is not limited to RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storages, magnetic Box, tape, disk storage or other magnetic memory apparatus or it can be used for storing desired information and can be visited by computer Any other medium asked.In addition, known to a person of ordinary skill in the art be, communication media generally comprises computer-readable Other numbers in the modulated data signal of instruction, data structure, program module or such as carrier wave or other transmission mechanisms etc According to, and may include any information delivery media.

Claims

1. a kind of eyeglass of periphery defocus, the eyeglass includes central optical zone, which is characterized in that the central optical zone peripheral hardware It is equipped with the defocus area of annular, the defocusing amount in the defocus area has variation on circumferential direction.

2. eyeglass as described in claim 1, which is characterized in that the eyeglass includes Warning Mark, and the Warning Mark is used for Indicate the deflection in the defocus area at the maximum position of defocusing amount.

3. eyeglass as described in claim 1, which is characterized in that

In the defocus area maxima and minima of defocusing amount difference be not less than 1D or 2D or 3D or 4D or 5D.

4. eyeglass as described in claim 1, which is characterized in that

The eyeglass be contact lens eyeglass, the defocus area be located at using center of lens as the center of circle, interior diameter 3mm~4mm, In a circular annular region of 5~8mm of overall diameter；Or

The eyeglass is the eyeglass of frame eyeglasses, and the defocus area is located at using center of lens as the center of circle, interior diameter 6mm~8mm, outer In a circular annular region of 8~12mm of diameter.

5. the eyeglass as described in any in Claims 1-4, which is characterized in that

The eyeglass is the eyeglass of contact lens, and the defocus area includes any position defocusing amount not less than 2D or 2.5D or 3D Or the area Gao Jiao of 3.5D or 4D or 4.5D or 5D or 5.5D；Or

The eyeglass is the eyeglass of frame eyeglasses, and the defocus area includes any position defocusing amount not less than 2.5D or 3D or 3.5D Or the area Gao Jiao of 4D or 4.5D or 5D or 5.5D or 6D.

6. eyeglass as claimed in claim 5, which is characterized in that

The area Gao Jiao is fallen into one or two or three or more fan-shaped regions, and the fan-shaped region is circle with center of lens The heart, and the sum of central angle is not more than 30 ° or 60 ° or 90 ° or 120 ° or 150 °.

7. eyeglass as claimed in claim 5, which is characterized in that

The defocus area includes one or two or three or more the areas Gao Jiao, and ring segment is with respect to center of lens where the area Gao Jiao The sum of central angle be not less than 5 ° or 15 ° or 30 ° or 45 ° or 60 °.

8. eyeglass as claimed in claim 5, which is characterized in that

The central optical zone is circular fixed-focus area, the eyeglass include one using center of lens as the center of circle it is circular from Jiao Qu is multiple using center of lens as the circular defocus area in the center of circle, and the area Gao Jiao is one be arranged in the defocus area A or multiple ring segments.

9. the eyeglass as described in any in Claims 1-4,6-9, which is characterized in that

The defocus area includes in eyeglass outer surface formation with one of flowering structure or any combination:

The curved surface of defocusing amount gradual change；

Fixed-focus region；

Dot bulge.

10. the eyeglass as described in any in Claims 1-4,6-9, which is characterized in that

The defocusing amount in the defocus area forms a peak value on 0~360 ° of deflection, the peak value not less than 2D or 2.5D or 3D or 3.5D or 4D or 4.5D or 5D or 5.5D；Or

The defocusing amount in the defocus area forms two peak values at 120 °~240 ° of interval on 0~360 ° of deflection, wherein first A peak value is not less than 2D or 2.5D or 3D or 3.5D or 4D or 4.5D or 5D or 5.5D, second peak value and first peak value phase Deng, or less than first peak value.

11. a kind of eyeglass of Ortho-K, the eyeglass includes base curve area, reversion arc area and positioning arc area, which is characterized in that There is structure change in the circumferential at least one of the base curve area and reversion arc area.

12. eyeglass as claimed in claim 11, which is characterized in that

The reversion arc area includes at least two ring segments, and the height of one of ring segment is greater than other ring segments；Or

The reversion arc area is set as the aspherical shape of highly gradient in the circumferential.

13. a kind of frame eyeglasses, including mirror holder and two eyeglasses, which is characterized in that at least one of described two eyeglasses are adopted With the eyeglass as described in any in claims 1 to 10.

14. eyeglass as claimed in claim 13, which is characterized in that

The defocus area includes an area Ge Gaojiao, and the area Gao Jiao is located above or below center of lens；Alternatively, the defocus Area includes the area Liang Gegaojiao, one of them is located at the top of center of lens, another is located at the lower section of center of lens；

Wherein, the area Gao Jiao refer to any position defocusing amount in the defocus area not less than 2.5D or 3D or 3.5D or 4D or The region of 4.5D or 5D or 5.5D or 6D.

15. a kind of method for obtaining defocusing amount parameter, comprising:

Under user's naked state, the defocusing amount of multiple sampling points on user's cornea is acquired, the sampling point is distributed in cornea Center is on the multiple directions angle in the coordinate system of origin；

Defocusing amount parameter is obtained according to the defocusing amount of sampling points multiple on the cornea.

16. method as claimed in claim 15, it is characterised in that:

It according to the defocusing amount parameter that the defocusing amount of sampling points multiple on the cornea obtains include one of following parameter or any Combination:

The defocusing amount of multiple sampling points on the cornea；

Maximum defocus amount on the cornea；

The location information where maximum defocus amount on the cornea；

Wherein, the maximum defocus amount on the cornea according to the defocusing amount of sampling points multiple on the cornea determine, it is described effectively from Burnt region refers to that any position defocusing amount on the cornea is not less than the region of corresponding defocus threshold value, and the defocus threshold value is not less than 3.5D or 4D or 4.5D or 5D or 5.5D.

17. the method described in claim 16, it is characterised in that:

The maximum defocus amount on the cornea is determined according to the defocusing amount of sampling points multiple on the cornea, comprising:

Using the maximum value of the defocusing amount of sampling points multiple on the cornea as the maximum defocus amount on the cornea；Or

Determine that defocusing amount is most on each deflection according to the defocusing amount of the sampling point on deflection each in the multiple deflection Big value；According to the defocusing amount curve for carrying out curve fitting to obtain on 0 °~360 ° deflections of defocusing amount on each deflection；It will The peak-peak of the defocusing amount curve is determined as the maximum defocus amount on the cornea.

18. the method as described in claim 15 or 16 or 17, it is characterised in that:

Under user's naked state, refer under the naked state before A nearsighted person is with mirror, obtained defocusing amount ginseng Number is for matching mirror for the A nearsighted person；Or

Under user's naked state, refers in A nearsighted person through Ortho-K under the naked state after cornea moulding, obtain To the defocusing amount parameter be used to assess the near-sighted control effect after the A nearsighted person wears Ortho-K.

19. a kind of method for obtaining defocusing amount parameter, comprising:

In A nearsighted person's wearing of contact lens, acquire multiple on the dioptric system of A nearsighted person's cornea and eyeglass composition The defocusing amount of sampling point, the sampling point are distributed in using corneal center as on the multiple directions angle in the coordinate system of origin；

Defocusing amount parameter is obtained according to the defocusing amount of sampling points multiple on the dioptric system.

20. method as claimed in claim 19, it is characterised in that:

The defocusing amount parameter includes one of following parameter or any combination:

Maximum defocus amount on the dioptric system；

Wherein, the maximum defocus amount on the dioptric system is determined according to the defocusing amount of sampling points multiple on the dioptric system, institute Defocus threshold value is stated not less than 3.5D or 4D or 4.5D or 5D or 5.5D.

21. method as claimed in claim 19, it is characterised in that:

The defocusing amount parameter includes: to determine the presence or absence of effective defocus region according to the defocusing amount of the multiple sampling point, quantity, big One of small and position or much information, wherein effective defocus region refers to any position defocus on the dioptric system Amount is not less than the region of corresponding defocus threshold value, and the defocus threshold value is not less than 3.5D or 4D or 4.5D or 5D or 5.5D.

22. method as claimed in claim 19, it is characterised in that:

The glasses that the A nearsighted person wears are contact lens, and the contact lens is used as appointed in claims 1 to 10 Eyeglass described in one, the eyeglass include a Warning Mark, the Warning Mark be used to indicate in the defocus area of the eyeglass from Coke measures maximum position；

It acquires on the dioptric system before the defocusing amount of multiple sampling points, the method also includes: according to the instruction of the eyeglass Mark, calibrates the wear angle of the eyeglass, makes the maximum position alignment institute of defocusing amount in the defocus area of the eyeglass State the position where the maximum defocus amount on A nearsighted person's cornea.

23. one kind matches mirror method, comprising:

A nearsighted person is obtained with the defocus under the naked state before mirror according to the method as described in any in claim 15 to 17 Measure parameter；

It is that the A nearsighted person matches mirror according to the defocusing amount parameter.

24. method as claimed in claim 23, it is characterised in that:

The defocusing amount parameter includes the location information of the maximum defocus amount and its place on the cornea；

It is that the A nearsighted person matches mirror according to the defocusing amount parameter, comprising: the angle of periphery defocus is matched for the A nearsighted person The eyeglass of film contact lense or frame eyeglasses, so that maximum defocus amount and the eyeglass corresponding position on A nearsighted person's cornea Defocusing amount contraposition superposition after, the defocus threshold value of obtained sum not less than setting, wherein the defocus threshold value not less than 3.5D or 4D or 4.5D or 5D or 5.5D.

25. method as claimed in claim 23, it is characterised in that:

The defocusing amount parameter includes the defocusing amount information of multiple sampling points on the cornea；

It is that the A nearsighted person matches mirror according to the defocusing amount parameter, comprising: the angle of periphery defocus is matched for the A nearsighted person The eyeglass of film contact lense or frame eyeglasses, when so that the A nearsighted person wearing the eyeglass, defocusing amount on the cornea with After the defocusing amount contraposition superposition of the eyeglass corresponding position, at least there is the big of effective defocus region and effective defocus region It is small to meet the requirements, wherein effective defocus region refers to that any position defocusing amount is not less than the region of corresponding defocus threshold value, institute Defocus threshold value is stated not less than 3.5D or 4D or 4.5D or 5D or 5.5D.

26. method as claimed in claim 25, it is characterised in that:

The size in effective defocus region is met the requirements, comprising: effective defocus region meets following one or more items Part:

Ring segment is not less than an angle threshold, the angle threshold with respect to the central angle of center of lens where effective defocus region It is no less than a setting value of 5 ° or 15 ° or 30 ° or 45 ° or 60 °；

27. the method as described in claim 24 or 25, it is characterised in that:

The eyeglass uses the eyeglass of the periphery defocus as described in any in claims 1 to 10；

Before carrying out the contraposition superposition, the method also includes: the wear angle of the eyeglass is calibrated, the mirror is made The position where maximum defocus amount in the defocus area of piece on A nearsighted person's cornea described in the maximum position alignment of defocusing amount.

28. method as claimed in claim 23, which is characterized in that the method also includes:

Obtain the diameter of the pupil of the A nearsighted person；

The eyeglass of frame eyeglasses or contact lens is matched for the A nearsighted person, wherein determine according to the diameter of the pupil The diameter of the diameter of the central optical zone of the eyeglass, pupil is bigger, it is determined that the eyeglass central optical zone diameter It is bigger.

29. a kind of method for assessing near-sighted control effect, comprising:

A nearsighted person is obtained after Ortho-K is to cornea moulding according to the method as described in any in claim 15 to 17 Naked state under obtained defocusing amount parameter；

Determine the Ortho-K to the near-sighted control effect of the A nearsighted person according to the defocusing amount parameter.

30. method as claimed in claim 29, it is characterised in that:

The defocusing amount parameter includes the maximum defocus amount on the cornea or maximum defocus amount and setting on the cornea A defocus threshold value comparison result；It is described that near-sighted control effect is determined according to the defocusing amount parameter, comprising: according to described Defocusing amount parameter judges whether the maximum defocus amount on the cornea is not less than the defocus threshold value, if so, determining myopia control Effect is effective, if not, determining that myopia control effect is invalid；Or

The defocusing amount parameter includes the maximum defocus amount on the cornea or maximum defocus amount and setting on the cornea Multiple defocus threshold values comparison result；It is described that near-sighted control effect is determined according to the defocusing amount parameter, comprising: according to described Defocusing amount parameter judges whether the maximum defocus amount on the cornea is not less than one or more defocus threshold values, if so, according to institute It states a maximum defocus threshold value in one or more defocus threshold values and searches corresponding myopia control success rate, according to the myopia It controls success rate and determines near-sighted control effect.

31. method as claimed in claim 29, it is characterised in that:

The defocusing amount parameter includes at least the presence or absence of effective defocus area and size information；

It is described that near-sighted control effect is determined according to the defocusing amount parameter, comprising: as on the cornea there are effective defocus region, It is then searched according to effective corresponding defocus threshold value in defocus region and the size information in effective defocus region corresponding close Depending on controlling success rate, near-sighted control effect is determined according to the myopia control success rate.

32. the method as described in claim 30 or 31, it is characterised in that:

It is described that near-sighted control effect is determined according to the myopia control success rate, comprising:

Directly near-sighted control effect is indicated using the myopia control success rate；Or

Judge whether the myopia control success rate is not less than success in expectation rate, if so, determining that myopia control effect is to have Effect, if not, determining that myopia control effect is invalid.

33. the method as described in any in claim 29 to 31, it is characterised in that:

The assessment of the myopia control effect 2 weeks after the A nearsighted person wears Ortho-K it is interior or 1 month in or 3 It is carried out in month or in 6 months.

34. a kind of computer equipment, including memory, processor and it is stored on the memory and can be on the processor The computer program of operation, which is characterized in that the processor realizes such as claim 15 to 33 when executing the calculation procedure The processing of method described in middle any claim.

35. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The processing of the method as described in any claim in claim 15 to 33 is realized when being executed by processor.