CN107765448A - Continuous vari-focus contact lenses - Google Patents
Continuous vari-focus contact lenses Download PDFInfo
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- CN107765448A CN107765448A CN201610705837.5A CN201610705837A CN107765448A CN 107765448 A CN107765448 A CN 107765448A CN 201610705837 A CN201610705837 A CN 201610705837A CN 107765448 A CN107765448 A CN 107765448A
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- optics area
- contact lenses
- mirror degree
- dioptric
- continuous vari
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- G—PHYSICS
- G02—OPTICS
- G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
- G02C7/00—Optical parts
- G02C7/02—Lenses; Lens systems ; Methods of designing lenses
- G02C7/04—Contact lenses for the eyes
- G02C7/041—Contact lenses for the eyes bifocal; multifocal
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Abstract
A kind of continuous vari-focus contact lenses, include a central optical zone and a peripheral region.The central optical zone includes a first optics area and the second optics area.The first optics area is to surround the border circular areas formed as 1.5 ± 1.0mm by the center of circle and radius using a central optical axis of the continuous vari-focus contact lenses.The second optics area is that the periphery from the first optics area is extended radially outward to the peripheral region.The radially continuous change of dioptric mirror degree of the continuous vari-focus contact lenses.The average rate of change of dioptric mirror degree is below 0.25D/mm in the first optics area, is more than 0.25D/mm in the second optics area.Effect of the present invention is, by changing its dioptric mirror degree continuously in a radial direction, the continuous vari-focus contact lenses are enable to correct eyeball ametropia, and the focus of retinal periphery scope imaging is corrected simultaneously, smooth-going is produced without the retinal periphery scope Myopia defocus (Myopia Defocus) for jumping picture.
Description
Technical field
The present invention relates to a kind of glasses, more particularly to a kind of contact lenses.
Background technology
Refering to Fig. 1, the eyes 9 of A nearsighted person are before imaging in retina 91, so can not be in view for distant place scenery
Clearly image is formed on film 91.However, one is worn as the near-sighted hidden of concavees lens refering to the eyes 9 that Fig. 2 is the A nearsighted person
During shape glasses 8, distant place scenery is imaged on retina 91 via the near-sighted correction of contact lenses 8 regulation.
Above-mentioned A nearsighted person is to take telemeasurement to find out energy myopia correction to suffer from when confirming that myopia degree match somebody with somebody mirror
The near-sighted contact lenses 8 of the eyesight of person, such as the near-sighted contact lenses 8 that institute's measure configuration goes out are can to allow A nearsighted person can be with correction
The definition of eyesight 1.0 afterwards, see the scenery of five meters of distant places.
However, A nearsighted person's most times are to match somebody with somebody to have on the near-sighted contact lenses 8 that above-mentioned distance measuring configures, when long
Between closely see the screen for regarding the appliance and electronic such as flat board, mobile phone, computer, or long-time near-distance reading books newspapers and magazines,
Actually allow and wear from the point of view of the visual imaging after the eyes 9 of near-sighted contact lenses 8 are corrected with above-mentioned long distance closely picture, from
And long sight defocus (Hyperopia Defocus) is produced in retinal periphery scope, so, eyes 9 are in order to correct right
Jiao produces clearly vision imaging, and the tight drive crystalline 93 of contraction that the palpus of ciliary muscle 92 of eyes 9 is lasting focuses on, and can cause eyelash
The spasm of shape flesh 92 is temporarily lost with the ability loosened, so as to form pseudo-myopia.If maintaining this state for a long time, the convulsion of ciliary muscle 92
Contraction is also possible to stimulate the elongation of the axis oculi of eyes 9, so as to form the true myopia that can not be reversed, causes the intensification of myopia degree.
Refering to Fig. 3 and Fig. 4, far see near to solve the problems, such as that above-mentioned single multifocal contact lens are seen, then have with multiple tools
Have different dioptric mirror degrees focus area 71,72, multifocal contact lens 7 come out, can see near and can see remote for realizing
Effect.However, multifocal contact lens 7 are the problem of maximum, wearer is seeing that remote to see that nearly conversion is watched attentively stealthy in multifocal
During different focus areas 71,72 of glasses 7, it can see in order to reach and closely see the conversion of remote moment, therefore between different focus areas 71,72
Dioptric mirror degree be drastically bounce change, the eyes 9 of some wearers, which can not adapt to above-mentioned dioptric mirror degree, drastically to be changed, then can be made
Picture is jumped into imaging and fuzzy case produces, and is also had light splitting phenomenon, is caused visual contrast to decline, extended wear use, which is got off, matches somebody with somebody
Wearer easily has the adverse reactions such as dizzy or maladjustment.
The content of the invention
It is an object of the invention to provide a kind of continuous vari-focus contact lenses, it can correct eyeball ametropia, and correct
The imaging focal position of retinal periphery scope.
The continuous vari-focus contact lenses of the present invention, comprising：One central optical zone, and a peripheral region.
The central optical zone includes a first optics area and a second optics area, and the first optics area is continuous with this
One central optical axis of focus contact lens are border circular areas of the 1.5 ± 1.0mm around composition by the center of circle and radius.This second
Optics area is that the periphery from the first optics area is extended radially outward to the peripheral region.
The radially continuous change of dioptric mirror degree of the continuous vari-focus contact lenses, the average rate of change of dioptric mirror degree this
One optics area is below 0.25D/mm, is more than 0.25D/mm in the second optics area.
It is preferred that the dioptric mirror degree of the continuous vari-focus contact lenses is that starting point radially continuously changes from the central optical axis
Become.
It is preferred that the dioptric mirror degree in the second optics area is radially with the occasion of increase, and the second optics area
The difference of the dioptric mirror degree of peripheral region and the dioptric mirror degree at the central optical axis is not more than 1.5D.
It is preferred that the dioptric mirror degree in the second optics area is radially with the occasion of increase, and the second optics area
The average rate of change of dioptric mirror degree is more than 0.75D/mm.
It is preferred that the first optics area has a starting dioptric mirror degree for being negative value, the first optics area and second light
The dioptric mirror degree of school district is radially with the occasion of increase.
It is preferred that the base curve radius of curvature in the first optics area, between 8.0 to 9.0mm, the aspherical constant of the cone (K) is more than
0。
It is preferred that the outer rim in the second optics area and the central optical axis distance of the continuous vari-focus contact lenses are between radius
0.5 to 4.0mm.
It is preferred that the peripheral region is stretched out by the outer rim in the second optics area, the peripheral region adjusts bent according to actual demand
Rate changes, and changes and reduce the generation of aberration to reach appropriate lens thickness.
It is preferred that the dioptric mirror degree in the first optics area is that starting point is in cumulative trend by the central optical axis, the second optics area
Dioptric mirror degree to continue the dioptric mirror degree in the first optics area be in cumulative trend.
It is preferred that the cumulative rate of dioptric mirror degree in the first optics area is less than the cumulative rate of dioptric mirror degree in the second optics area.
The beneficial effects of the present invention are：By changing the first optics area and the second optics area continuously in a radial direction
Dioptric mirror degree, the continuous vari-focus contact lenses are enable to correct eyeball ametropia, and solve existing multifocal contact lens to have into
Cause wearer to have the problem of adverse reactions such as dizzy or maladjustment as jumping as or being divided phenomenon, and correct retina simultaneously
The focal position of peripheral extent imaging, so that eyes can be reached with pressure of effectively releiving.
Brief description of the drawings
The other features and effect of the present invention, will clearly be presented in the embodiment with reference to schema, wherein：
Fig. 1 is a schematic diagram, illustrates the imaging aspect of the eyes of an A nearsighted person；
Fig. 2 is a schematic diagram, illustrates that the eyes of the A nearsighted person wear the imaging after a near-sighted contact lens
Aspect；
Fig. 3 is a floor map, illustrates the subregion aspect of an existing multifocal contact lens；
Fig. 4 is a schematic diagram, illustrates that eyes carry out different distance when wearing the multifocal contact lens using each area
Focusing imaging；
Fig. 5 is a floor map, illustrates the subregion aspect of continuous vari-focus contact lenses of the present invention；
Fig. 6 is a schematic side view, illustrates a wearer when wearing continuous vari-focus contact lenses of the present invention, this is continuous
Each area focusing imaging aspect of focus contact lens；
Fig. 7 is a dioptric mirror degree distribution map of the embodiment 1 of continuous vari-focus contact lenses of the present invention；
Fig. 8 is a dioptric mirror degree distribution map of the embodiment 2 of continuous vari-focus contact lenses of the present invention；And
Fig. 9 is a dioptric mirror degree distribution map of the embodiment 3 of continuous vari-focus contact lenses of the present invention.
Embodiment
The present invention is a kind of continuous vari-focus contact lenses, by changing its dioptric mirror degree continuously in a radial direction, makes continuously to become
Burnt contact lenses can correct eyeball ametropia, and solve existing multifocal lens have imaging jump as or light splitting phenomenon and so that matching somebody with somebody
Wearer has the problem of adverse reactions such as dizzy or maladjustment, and corrects the focal position of retinal periphery scope imaging simultaneously,
So that eyes can be reached with pressure of effectively releiving.
The center of vision of eyes is more sensitive more accurate than peripheral visual acuity, has the diameter to be about near retinal centre
0.2mm dolly dimple, referred to as central fovea of macula (also known as macula area), it is the most sharp position of vision, is also at regarding for human eye
Feel center.Around the neighboring area of macula area, the significant reduction of its visual acuity, when leaving 5 degree of angles of the optical axis, resolution capability is just
It is down to 1/3rd of macula area central value.But because cornea is in addition to the scope near central portion is spheric, remaining
It is spheric that neighboring area is then non-, if the refractive index of contact lenses is all consistent, when eyes see distant place, light is as parallel
Light is projected after crystalline reflects at central fovea of macula, and ciliary muscle loosens lower long-time and sees a distant place, and eyes can't be caused tired
Labor, opposite, if seeing object closely for a long time, under ciliary muscle is exerted oneself, although nearly thing is clear, cause to be located at retina
Can not fall image focus on the retina for peripheral extent, forms long sight defocus, now eyes are in order to obtain preferable imaging, meeting
The curvature of ciliary muscle adjustment crystalline is forced, is increased burden.Therefore, present invention system by changing contact lenses continuously in a radial direction
Dioptric mirror degree, continuous vari-focus contact lenses is corrected eyeball ametropia, and solve existing multifocal contact lens imaging
Jump as or be divided phenomenon and cause wearer to have the problem of adverse reactions such as dizzy or maladjustment, and correct retina week simultaneously
The focus of side scope imaging.
Refering to Fig. 5 and Fig. 6, continuous vari-focus contact lenses 1 of the present invention, a central optical axis L, a central optical zone are included
11, and a peripheral region 12 extended radially outward by the central optical zone 11.Wherein, the central optical zone 11 is to provide correction
The visible area of eyesight, in having dioptric mirror degree in structure design, for the correction of eyesight, and the structure design of the peripheral region 12 is
The wearing area appropriate for increasing the continuous vari-focus contact lenses 1, the continuous vari-focus contact lenses 1 can stably be fitted in
Cornea 94 on the eyes 9 of one wearer, because the peripheral region 12 is non-principal visual area, therefore the peripheral region 12 may
Design does not have optical clarity effect.
The central optical zone 11 includes a first optics area 111, and a second optics area 112.The first optics area
111 be the central optical axis L using the continuous vari-focus contact lenses 1 as the center of circle, and using radius by 1.5 ± 1.0mm around being formed
Border circular areas.For base curve (base curve, the BC) radius of curvature in the first optics area 111 between 8.0 to 9.0mm, circular cone is normal
Number (K) is more than 0, and dioptric mirror degree outwardly continuously changes along radial direction, and using central optical axis L as axial symmetry center,
Its average rate of change of radial direction dioptric mirror degree is below 0.25D/mm, it is preferred that its average rate of change is less than 0.125D/mm.When
For the eyes 9 of wearer when wearing the continuous vari-focus contact lenses 1 and watching a distant place attentively, distant place scenery passes through the first optics area
111 refractive corrections and be imaged on the central fovea of macula 911 of retina 91.The starting dioptric mirror degree in the first optics area 111 is
It is adjusted according to the needs of wearer, if wearer is A nearsighted person, then to be adapted to the dioptric mirror degree of the patient as originating
Value.
The second optics area 112 is stretched out from the first optics area 111, and outer rim and the continuous vari-focus contact lenses
1 central optical axis L distances are less than radius 4mm, and preferably 2.5 to 3.5mm, but, the second optics area 112 and the center
Vertical calculate of the distance of optical axis L is more than 4mm, does not still interfere with whole visual range effect, i.e., entirely the central optical zone 11 can
Vision area can't be affected, so, the above-mentioned second optics area 112 and central optical axis L distance are less than radius 4mm not
It is to limit definitely to be less than, simply in human eye's visible area scope typically not over radius 4mm, if the continuous vari-focus is stealthy
Part design of the glasses 1 outside visible area scope has dioptric mirror degree, it is clear that only can increase processing cost on foot.The second optics area
112 dioptric mirror degree outwardly continuously changes along radial direction, and using central optical axis L as axial symmetry center, its radial direction is bent
The average rate of change of light microscopic degree is more than 0.25D/mm, it is preferred that the average rate of change of its radial direction dioptric mirror degree is greater than 0.5D/
mm.The continuous vari-focus contact lenses 1 are by improving the dioptric mirror degree in the second optics area 112, that is, the second optics area 112
Dioptric mirror degree be greater than the dioptric mirror degree in the first optics area 111, and allow the dioptric mirror degree in the second optics area 112 to be averaged
Rate of change is more than the average rate of change of the dioptric mirror degree in the first optics area 111, scenery is reflected via the second optics area 112
Correction into image focus is fallen before the peripheral extent 912 of retina 91, is produced Myopia defocus, is allowed ciliary during regarding nearly thing whereby
Flesh 92 makes the curvature of crystalline 93 diminish and adjusts focusing, eyes can be reached with pressure of effectively releiving without Overexertion.It is worth one
It is mentioned that, above-mentioned below 0.25D/mm and more than 0.25D/mm number range defines, that is, is respectively intended to mean less than or equal to (no
More than) 0.25D/mm and more than or equal to (being not less than) 0.25D/mm.
In on the plan of practical application, although the dioptric mirror degree average rate of change in the foregoing first optics area 111 is not more than 0.25D/
Mm, it must will be in cumulative situation to be not limited in the range of the first optics area 111, the design successively decreased after being also incremented by, only needed
The average rate of change of control dioptric mirror degree is not more than 0.25D/mm, and similarly, the second optics area 112 is as the same.But, for
Manufacturing technology difficulty and avoid producing and jump picture and consider, preferably implement on, the dioptric mirror degree in the first optics area 111
It is that starting point will be in cumulative trend by central optical axis L, the dioptric mirror degree in the second optics area 112 continues the first optics area 111
Dioptric mirror degree be in cumulative trend, more preferably, the cumulative rate of dioptric mirror degree in the first optics area 111 is less than the second optics area 112
The cumulative rate of dioptric mirror degree.
The outer rim in the peripheral region 12 from the second optics area 112 stretches out, and the outer rim of the peripheral region 12 is continuous with this
The central optical axis L distances of focus contact lens 1 are not more than radius 8.0mm.
By establishing the starting dioptric mirror degree in the first optics area 111, and the continuous vari-focus contact lenses 1 this first
Optics area 111 and both dioptric mirror degree rates of change of the second optics area 112, you can this is produced according to existing manufacture method
The continuous vari-focus contact lenses 1 of invention.Existing manufacture method can enumerate as：Die forming, rotation contour forming, turning shaping ... etc.
Method.Do not have any restrictions about the preparation method for continuous vari-focus contact lenses 1 of the present invention, and material does not also limit
System, material can enumerate but be not limited to hydroxyethyl methacrylate (2-Hydroxyethyl methacrylate, HEMA) and first
Copolymer, hydrophily glue (Hygrogel), the relatively hydrophobic property silicon glue of base acrylic acid (Methacrylic acid, MAA)
(Silicon hydrogel), rigid high oxygen flow fluosilicic polymer etc..
When the eyes 9 of wearer are wearing the continuous vari-focus contact lenses 1 and are watching nearly thing attentively, neighbouring central optical axis L
Scenery be imaged on via the refractive correction of the first optics area 111 on the central fovea of macula 911 of retina 91, apart from the center light
The scenery of axle L scopes farther out then images in view via the refractive correction of the second optics area 112 of the continuous vari-focus contact lenses 1
The peripheral extent 912 of film 91, because there is the dioptric mirror degree more than the first optics area 111 to design in the second optics area 112, make
Scenery, which is obtained, via the imaging in the second optics area 112 is fallen before the peripheral extent 912 of retina 91, forms Myopia defocus,
Ciliary muscle 92 is allowed the curvature of crystalline 93 is diminished without Overexertion and adjust focusing, can reach to eyes 9 and effectively releive whereby
Pressure.
When the continuous vari-focus contact lenses 1 meet the dioptric mirror degree in the second optics area 112 radially with the occasion of increasing
Add, and be not more than the difference of the dioptric mirror degree and the dioptric mirror degree at central optical axis L of the peripheral region in the second optics area 12
Under conditions of 1.5D, the imaging on depending on retina during nearly thing 91 is clear enough, and it is tight more effectively to reduce ciliary muscle 92
The situation of contraction produces, and closely watches caused fatigue, the burden for the eyes 9 that can more releive attentively for a long time to reduce.
Changed by the dioptric mirror degree for adjusting the second optics area 112, can also effectively slow down the increase of child myopia.Its
Reason is that the eyes of children are mostly farsightedness, and axis oculi can constantly increase in growth course, is gradually sent out towards general eyesight
Exhibition.During above-mentioned axis oculi increases, if carrying out myoporthosis using existing single focus lens and closely watching for a long time
During scenery, the axis oculi for easily causing children's eyes excessively elongates, so as to cause myopia.Therefore, continuous vari-focus stealth is adjusted
The dioptric mirror degree change aspect in the second optics area 112 of glasses 1 can effectively improve foregoing problems, that is, by second optics
The dioptric mirror degree in area 112 makes the average rate of change of the dioptric mirror degree in the second optics area 112 radially with the occasion of increase
More than 0.75D/mm, children can be allowed effectively to slow down myopia degree increase when wearing corrects defects of vision use.
By the starting dioptric mirror degree in the first optics area 111 for adjusting the continuous vari-focus contact lenses 1, and adjustment should
The overall dioptric mirror degree change of continuous vari-focus contact lenses 1 is worn so as to fit for patients with presbyopia.Its adjustment mode is to allow this
First optics area 111 have zero or negative value dioptric mirror degree, with adapt to wearer face or myopia degree, for its watch long distance
From scenery, and by the dioptric mirror degree in the second optics area 112 radially on the occasion of increase, to increase to the long sight of wearer
The number of degrees, to allow it can be for distance in wearer's viewing and scenery closely.
Presently preferred embodiments of the present invention will be exemplified below, however, before the present invention is described in detail by preferred embodiment, should
When attention is in the following description content, similar element is represented with being identically numbered.
[embodiment 1]
Refering to Fig. 5, Fig. 6 and Fig. 7, the continuous vari-focus contact lenses 1 of the embodiment of the present invention 1 eyes 9 that are suitable for releiving are near
The easypro pressure lens design for the burden that distance is watched attentively, the continuous vari-focus contact lenses 1 are polymerize with HEMA glues through UV light irradiations to be molded
Shaping, and comprising using the central optical axis L of the continuous vari-focus contact lenses 1 as the center of circle and with radius be respectively 1.5mm, 3mm and
7.1mm surrounds 111, one, the first optics area, the second optics area 112 defined, and a peripheral region 12.This second
The outer rim in optics area 112 from the first optics area 111 stretches out, the peripheral region 12 from the outer rim in the second optics area 112 to
Outer extension.Thickness at the central optical axis L of the continuous vari-focus contact lenses 1 is 0.08mm, the base curve in the first optics area 111
Radius of curvature is 8.6mm and the constant of the cone (K) is 0.3, and the starting dioptric mirror degree in the first optics area 111 is -3.0D, and this first
The average rate of change of the dioptric mirror degree in optics area 111 radially is+0.125D/mm, the diopter lens in the second optics area 112
The average rate of change of degree radially is+0.875D/mm, the dioptric mirror degree in the second optics area 112 to radius 3mm edges
For -1.5D.
The continuous vari-focus contact lenses 1 are aspherical and continuous by the first optics area 111 and the second optics area 112
Zoom designs, and is avoided that the discrete ladder of existing multifocal contact lens drastically changes caused jump picture or light splitting phenomenon is entered
Caused by fuzzy image or maladjustment phenomenon produce.
Furthermore the dioptric mirror degree change in the first optics area 111 is not influence its imaging being located at central fovea of macula 911
Quality, and radially with the occasion of increase dioptric mirror degree since the scope in the second optics area 112, when to radius being 3mm
Dioptric mirror degree reach -1.50D, make retina 91 peripheral extent 912 into image focus earlier above, produce Myopia defocus, borrow
This slows down load of the ciliary muscle 92 because of tight degree, effectively reduction eyes 9 produced by the adjustment curvature of crystalline 93.It is worth mentioning
, the continuous vari-focus contact lenses 1 are in the dioptric mirror degree and central optical axis L being equal to apart from central optical axis L at radius 3mm
If the difference of the dioptric mirror degree at place is more than 1.5D, excessive Myopia defocus is caused to have influence on image quality on the contrary, therefore control
The difference for being equal to dioptric mirror degree and the dioptric mirror degree at central optical axis L at radius 3mm apart from central optical axis L is not more than
During 1.5D, image quality can be provided simultaneously with and loosen the effect of ciliary muscle 92, effectively solve most of wearing light area sphere at present
Designing contact lenses regard nearly eye fatigue problem for a long time.
[embodiment 2]
Refering to Fig. 5, Fig. 6 and Fig. 8, the embodiment of the present invention 2 is suitable for slowing down child myopia, its with the embodiment 1 substantially
It is identical, difference be in：The continuous vari-focus contact lenses 1 polymerize mould with silicon glue (Silicon hydrogel) through UV light irradiations
Pressing formation, the first optics area 111, the second optics area 112 and the peripheral region 12 using central optical axis L as the center of circle and respectively with
Radius 1.0mm, 3.0mm and 7.0mm, which are surrounded, to be defined, and the base curve radius of curvature in the first optics area 111 is 8.5mm and circular cone
Constant (K) is 0.8, and the starting dioptric mirror degree in the first optics area 111 is -3.0D, the dioptric mirror degree edge in the first optics area 111
The radially outer average rate of change is+0.125D/mm, the average change of the dioptric mirror degree in the second optics area 112 radially
Rate is+1.50D/mm, and the dioptric mirror degree of the peripheral light school district 112 to radius 3mm edges is+0.125D.
The continuous vari-focus contact lenses 1 are aspherical and continuous by the first optics area 111 and the second optics area 112
Zoom designs, and is avoided that the discrete staged of existing multifocal contact lens drastically changes caused jump picture or light splitting phenomenon
Fuzzy image phenomenon caused by entering produces, and being averaged radially that the second optics area 112 passes through its dioptric mirror degree
Rate of change is more than+0.75D/mm, can produce the imaging design of the Myopia defocus of the peripheral extent 912 of retina 91, to improve
The design of retinal periphery scope long sight defocus caused by general framework glasses and spherical contact lens, thus derivative eye
The physiological stimulation that axle increases, avoids the axis oculi of children's eyes from excessively elongating, therefore the present embodiment 2 can have control child myopia concurrently and increase
Long and correction ametropia.
[embodiment 3]
Refering to Fig. 5, Fig. 6 and Fig. 9, the embodiment of the present invention 3 is suitable for the continuous vari-focus contact lenses 1 of patients with presbyopia,
It is roughly the same with the embodiment 1, difference be in：The continuous vari-focus contact lenses 1 are with glue (Hygrogel) through UV illumination
Polymerization die forming is penetrated, the first optics area 111, the second optics area 112 and the peripheral region 12 are using central optical axis L as the center of circle
And surrounded define with radius 1.0mm, 3.0mm and 7.0mm respectively, the starting dioptric mirror degree in the first optics area 111 is zero,
The average rate of change of the dioptric mirror degree in the first optics area 111 radially is+0.25D/mm, the second optics area 112
The average rate of change of dioptric mirror degree radially is+1.0D/mm, the dioptric of the second optics area 112 to the radius 3mm edges
Mirror degree is+2.5D.
The continuous vari-focus contact lenses 1 are aspherical and continuous by the first optics area 111 and the second optics area 112
Zoom designs, and is avoided that the discrete ladder of existing multifocal contact lens drastically changes caused jump picture or light splitting phenomenon is entered
Caused by fuzzy image phenomenon produce, and the first optics area 111 can watch scene at a distance for wearer, and second light
School district 112 is available for closely watching scene, can be used as reading glasses.
Advantages of the present invention, can be summarized as follows by the explanation more than again：
First, continuous vari-focus contact lenses 1 of the present invention by change continuously in a radial direction the first optics area 111 and this second
The dioptric mirror degree in optics area 112, can not only correct eyeball ametropia, moreover it is possible to while correct the peripheral extent 912 of retina 91
Imaging focal position and maintain the clear aberrationless of optical quality and jump as or light splitting phenomenon.
2nd, changed by adjusting the dioptric mirror degree of the continuous vari-focus contact lenses 1, make it in central optical axis L distances etc.
The difference of dioptric mirror degree and the dioptric mirror degree at central optical axis L at radius 3mm is less than 1.5D, now more can effectively reduce
Ciliary muscle 92 reduces the fatigue caused by long-time close eye, can more releive eyes 9 to the adjusting force of crystalline 93
Burden.
3rd, by radially on the occasion of the dioptric mirror degree for increasing the second optics area 112, and to make its dioptric mirror degree
The average rate of change is more than 0.75D/mm, you can effectively slows down the increase of the myopia degree of children.
4th, by adjusting the starting dioptric mirror degree in the first optics area 111, then to adjust the second optics area 112 overall
Dioptric mirror degree changes, and it is gradually increased to the hyperopia degree of corresponding wearer and sees that remote see closely is matched somebody with somebody so as to fit for patients with presbyopia
Wear use.
In summary, continuous vari-focus contact lenses 1 of the present invention change its dioptric mirror degree continuously in a radial direction, make continuous vari-focus
Contact lenses 1 can correct eyeball ametropia, and solve existing multifocal lens have imaging jump as or light splitting phenomenon and so that matching somebody with somebody
Wearer has dizzy the problem of waiting adverse reaction, and the focal position that the peripheral extent 912 for correcting retina 91 simultaneously is imaged, with right
Eyes can reach pressure of effectively releiving, so can reach the purpose of the present invention really.
As described above, only embodiments of the invention are when the scope that the present invention can not be limited with this implement, i.e., all
The simple equivalent changes and modifications made according to claims of the present invention and description, all still belongs to the scope of the present invention.
Claims (10)
1. a kind of continuous vari-focus contact lenses, comprising a central optical zone and a peripheral region for surrounding the central optical zone,
The central optical zone includes a first optics area and a second optics area, it is characterised in that：The first optics area is with this
One central optical axis of continuous vari-focus contact lenses are border circular areas of the 1.5 ± 1.0mm around composition by the center of circle and radius, should
Second optics area is that the periphery from the first optics area is extended radially outward to the peripheral region；The continuous vari-focus contact lenses
The radially continuous change of dioptric mirror degree, the average rate of change of dioptric mirror degree is below 0.25D/mm in the first optics area, at this
Second optics area is more than 0.25D/mm.
2. continuous vari-focus contact lenses according to claim 1, it is characterised in that：The dioptric of the continuous vari-focus contact lenses
Mirror degree is that starting point radially continuously changes from the central optical axis.
3. continuous vari-focus contact lenses according to claim 1, it is characterised in that：The dioptric mirror degree in the second optics area is
Radially with the dioptric mirror degree on the occasion of increase, and at the dioptric mirror degree of the peripheral region in the second optics area and the central optical axis
Difference be not more than 1.5D.
4. continuous vari-focus contact lenses according to claim 1, it is characterised in that：The dioptric mirror degree in the second optics area is
Radially with the occasion of increase, and the average rate of change of the dioptric mirror degree in the second optics area is more than 0.75D/mm.
5. continuous vari-focus contact lenses according to claim 1, it is characterised in that：It is negative value that the first optics area, which has one,
Starting dioptric mirror degree, the dioptric mirror degree in the first optics area and the second optics area is radially with the occasion of increase.
6. continuous vari-focus contact lenses according to claim 1, it is characterised in that：The base curve curvature in the first optics area half
Between 8.0 to 9.0mm, the aspherical constant of the cone (K) is more than 0 in footpath.
7. continuous vari-focus contact lenses according to claim 1, it is characterised in that：The outer rim in the second optics area and the company
The central optical axis distance of continuous focus contact lens is between radius 0.5 to 4.0mm.
8. continuous vari-focus contact lenses according to claim 1, it is characterised in that：The peripheral region is by the second optics area
Outer rim stretches out, and the peripheral region adjusts Curvature varying according to actual demand, changes and reduce picture to reach appropriate lens thickness
The generation of difference.
9. continuous vari-focus contact lenses according to claim 1, it is characterised in that：The dioptric mirror degree in the first optics area is by this
Central optical axis are that starting point is in cumulative trend, and the dioptric mirror degree in the second optics area continues the dioptric mirror degree in the first optics area in gradually
Increasing trend.
10. continuous vari-focus contact lenses according to claim 9, it is characterised in that：The dioptric mirror degree in the first optics area is gradually
Gaining rate is less than the cumulative rate of dioptric mirror degree in the second optics area.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610705837.5A CN107765448B (en) | 2016-08-23 | 2016-08-23 | Continuous zooming contact lens |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610705837.5A CN107765448B (en) | 2016-08-23 | 2016-08-23 | Continuous zooming contact lens |
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| Publication Number | Publication Date |
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| CN107765448A true CN107765448A (en) | 2018-03-06 |
| CN107765448B CN107765448B (en) | 2021-04-02 |
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| CN201610705837.5A Active CN107765448B (en) | 2016-08-23 | 2016-08-23 | Continuous zooming contact lens |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113238394A (en) * | 2021-05-25 | 2021-08-10 | 萧旭贵 | Full-view-area zoom corneal contact lens |
| CN113514962A (en) * | 2021-04-29 | 2021-10-19 | 上允生技股份有限公司 | Continuous zooming contact lens |
| CN114594616A (en) * | 2020-12-07 | 2022-06-07 | 远景光学股份有限公司 | Lenses for slowing or preventing myopia progression |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144565A (en) * | 1994-03-23 | 1997-03-05 | 英诺特公司 | Method of manufacturing contact lenses |
| CN205404984U (en) * | 2016-03-07 | 2016-07-27 | 郑军锋 | Panorama type contact lens |
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2016
- 2016-08-23 CN CN201610705837.5A patent/CN107765448B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1144565A (en) * | 1994-03-23 | 1997-03-05 | 英诺特公司 | Method of manufacturing contact lenses |
| CN205404984U (en) * | 2016-03-07 | 2016-07-27 | 郑军锋 | Panorama type contact lens |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114594616A (en) * | 2020-12-07 | 2022-06-07 | 远景光学股份有限公司 | Lenses for slowing or preventing myopia progression |
| CN114594616B (en) * | 2020-12-07 | 2023-12-05 | 远景光学股份有限公司 | Lens for slowing or preventing myopia progression |
| CN113514962A (en) * | 2021-04-29 | 2021-10-19 | 上允生技股份有限公司 | Continuous zooming contact lens |
| CN113514962B (en) * | 2021-04-29 | 2023-06-23 | 萧旭贵 | Full Jiao Jingshen contact lens |
| CN113238394A (en) * | 2021-05-25 | 2021-08-10 | 萧旭贵 | Full-view-area zoom corneal contact lens |
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| Publication number | Publication date |
|---|---|
| CN107765448B (en) | 2021-04-02 |
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