CN105974605A - Four-quadrant area ambitus out-of-focus corneal contact lens - Google Patents
Four-quadrant area ambitus out-of-focus corneal contact lens Download PDFInfo
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- CN105974605A CN105974605A CN201610331538.XA CN201610331538A CN105974605A CN 105974605 A CN105974605 A CN 105974605A CN 201610331538 A CN201610331538 A CN 201610331538A CN 105974605 A CN105974605 A CN 105974605A
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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
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Abstract
The invention discloses a four-quadrant area ambitus out-of-focus corneal contact lens. According to the four-quadrant area ambitus out-of-focus corneal contact lens, the contact lens surface comprises an optical area and a fixing area, wherein the optical area is 6.0-8.0mm in diameter and comprises one central area and four quadrant areas; the diameter of the central area is 0.8-3.0mm; the width of each quadrant area is 1.0-3.0mm; 0.00D-(-6.00D) is prepared in the central area; positive additional values relative to the central area are prepared in the four quadrant areas; +0.05D-(+1.00D) is prepared for the positive additional value of the upper quadrant area; +0.07D-(+2.00D) is prepared for the positive additional value of the lower quadrant area; +0.09D-(+3.00D) is prepared for the positive additional value of a temple quadrant area; +0.011D-(+3.50D) is prepared for the positive additional value of a nasal side quadrant area; four quadrant areas with refraction degrees which are different from one another are prepared; full-quadrant area aspheric surface, temple and nasal quadrant area out-of-focus or adjusting lag out-of-focus contact lens are prepared.
Description
Technical field
The present invention relates to corneal contact lens technical field, it is provided that a kind of correct retinal periphery hypermetropia from
Burnt, rectification regards nearly control lag, the four-quadrant district periphery out of focus corneal contact lens of aspheric design, uses
Wear in myopia, in particular for juvenile myopia prevention and control.
Background technology
Medical science common recognition now: juvenile myopia main pathogenesis is retinal periphery hypermetropia out of focus
Caused by control lag, periphery out of focus lens is that myopia core rectifys control apparatus.First week of the whole world
Limit out of focus lens is released in August, 2010 by karr Zeiss, and trade name Zeiss becomes permanently happy lens.
Zeiss becomes permanently happy lens inventor Smith EL, after this lens lists, p-2.27 ±
The 1155 example children myopia retinal periphery dioptometries of 0.81D, 40 °, temporo side meansigma methods is+
2.47D, 40 ° of meansigma methodss of nasal side are+1.64D, it is indicated that originally will correct retinal periphery hypermetropia out of focus
Functional areas design lens periphery 360 °, correct by+2.00D equivalent, cause temporo side-looking nethike embrane to be rectified
Positive not enough (few+0.47D), nasal retina correct the peripheral hyperopia dioptric of excessively (many+0.36D)
Irregular (hyperopic anisometropia) occurs (to see: Optom Vis Sci 2013
: 90:1176-1186；Invest Ophthalmol Vis Sci, 2010:51:3864-3873；Invest
Ophthalmol Vis Sci.2009, Nov:50:5057-5069).
Myopia eyeball is an anon-normal spheroidal, 4 quadrant retinal periphery present 4 different
Refractive diopter, the upper side and lower side retinal periphery presents Myopia out of focus, nasal side and temporo side-looking nethike embrane week
While present hypermetropia out of focus, each axle position in 4 quadrant districts presents the different ametropia number of degrees, existing
Periphery out of focus corneal contact lens can not correct 4 quadrant districts, each axle position difference ametropia number of degrees,
Defect is yet suffered from the design of existing periphery out of focus corneal contact lens.Existing corneal contact lens only designs one
Individual base curve, anterior surface of cornea presents different curvature radius from central authorities to periphery, and corneal contact lens rear surface is bent
Rate radius does not matches that with anterior surface of cornea radius of curvature, affects corneal contact lens wearing comfort with steady
Qualitative.The design of periphery out of focus corneal contact lens is still and fails one of technical barrier of succeeding all the time.
Summary of the invention
The object of the invention: provide one to have rectification retinal periphery hypermetropia out of focus, correct to regard and closely adjust
Save delayed, the four-quadrant district periphery out of focus corneal contact lens of aspheric design, its 4 quadrant district designs
More conform to each quadrant area pathologic ametropia parameter of myopia retina.
The present invention seeks to be achieved by following technical proposals:
Four-quadrant district periphery out of focus corneal contact lens is contact lens,soft or contact lens,hard, hereinafter referred to as
For this corneal contact lens.This Corneal Contact minute surface shape includes light school district and fixed area, interior minute surface system
Standby base curve and limit arc.The optical area diameter 6.0mm to 8.0mm of this corneal contact lens, including 1
Central area and 4 quadrant districts, central area diameter 0.8mm to 3.0mm, each quadrant sector width 1.0mm
To 3.0mm, central area prepares 0.00D to-6.00D, and 4 quadrant districts relative to central area are just preparing
Value added, the upside the most value added preparation in quadrant district+0.05D to+1.00D, the most value added preparation in quadrant district, downside
+ 0.07D to+2.00D, the Nie Ce the most value added preparation in quadrant district+0.09D to+3.00D, nasal quadrants
The most value added preparation in district+0.11D to+3.50D, the quadrant district of 4 different refractive diopters of preparation.
Prepare panoramic limit district aspheric cornea contact lens, Nie Ce nasal quadrants district's corneal contact lens or regulate stagnant
Rear out of focus corneal contact lens.4 the most value added ratios in quadrant district, under nasal quadrants district ＞ Nie Ce quadrant district ＞
＞ central optical zone, quadrant district on the upside of quadrant district, side ＞.In this corneal contact lens, minute surface prepares 2 bases
Arc, the radius of curvature of 2 base curves is according to the corresponding region of corneal topography of individual prewired mirror person's human eye
Prepared by anterior surface of cornea radius of curvature measurement value.The outer minute surface of the fixed area of this corneal contact lens prepares rib
Mirror ballast, bilateral skiving and block stabilising arrangement, stablize contact lens position.
The central area of this corneal contact lens is positioned at contact lens center, in addition to preparing circular, also
Can prepare horizontal oval or perpendicular ellipse, long axis width 0.8mm to 3.0mm, short axle is shorter than major axis
0.2mm to 1.0mm, or central area is prepared zhou duicheng tuxing.
Quadrant district on the upside of the preparation of this corneal contact lens, quadrant district, downside, Nie Ce quadrant district and nasal side as
4, district of limit quadrant area, quadrant district, upside prepares along the vertical radial line of optical center with quadrant district, downside
On, Nie Ce quadrant district and nasal quadrants district prepare along the horizontal radial line of optical center.4 as
Limit azimuth, district ratio: Nie Ce quadrant district and nasal quadrants district azimuth ＞ or=90 °, upside quadrant
Azimuth, district ＞ or=azimuth, quadrant district, downside, quadrant district, downside azimuth ＜ or=90 °.
Described quadrant district is the most value added, also refers to bear depreciation relative to central area refractive diopter, and 4 quadrant districts are just
Value added amount or negative depreciation amount, calculate according to 2% to 12% conduct of central area diopter numerical value.Described
The most value added amount in Nie Ce quadrant district and nasal quadrants district, regards to 40 ° according to corresponding nasal side and 30 °, temporo side
Prepared by nethike embrane peripheral refractive power numerical value.
The quadrant sector width of this corneal contact lens refers to quadrant district either vertically or horizontally footpath line width, extremely
Few each quadrant sector width is more than 2.5mm, and at least at optical center 1.5mm, the preparation of quadrant district just adds
The 50% of value amount, at least prepares 0.5mm quadrant district, at least central area radius at optical center 1.5mm
With each quadrant sector width sum more than 3.0mm, there are enough regions, enough guaranteeing to demonstrate,prove quadrant area
The most value added amount.
Between the central area of this corneal contact lens with quadrant district, between adjacent Liang Ge quadrant district, preparation
0.2mm to 1.0mm transition region, preferably selects 0.3mm to 0.4mm transition region, by side refractive diopter
Within moving to opposite side, both sides refractive diopter melts into consistent.
The central area of this corneal contact lens and quadrant district, upside, quadrant district, downside, nasal quadrants district and
Nie Ce quadrant district, from the beginning of central area refractive diopter, the most value added, gradually according to each quadrant district refractive diopter
Enter the ground increasing dioptric number of degrees and form 4 quadrant transition regions.
The quadrant district of 4 different refractive diopters is prepared in 4 described quadrant districts, its face shape following three
Type:
A, panoramic limit district aspheric cornea contact lens (I type): 4 the most value added preparations in quadrant district are less than
+ 1.00D, central area prepares 0.00D extremely-6.00D, the upside the most value added preparation in quadrant district+0.05D
Just add to+0.60D, the downside the most value added preparation in quadrant district+0.07D extremely+0.70D, Nie Ce quadrant district
Value preparation+0.09D to+0.90D, the most value added preparation in nasal quadrants district+0.11D extremely+1.00D.4
The most value added ratio in individual quadrant district: nasal quadrants district ＞ Nie Ce quadrant district+0.05D to+0.30D, temporo side
On the downside of quadrant district ＞, quadrant district+0.05D is to+0.20D, and quadrant district on the upside of quadrant district, downside ＞+
0.05D to+0.20D.
B, Nie Ce nasal quadrants district's corneal contact lens (II type): Nie Ce quadrant district and nasal quadrants district are just
Value added preparation is more than+1.00D, and central area prepares 0.00D to-6.00D, and quadrant district, upside is the most value added
Preparation+0.05D is to+0.60D, the downside the most value added preparation in quadrant district+0.07D to+0.70D, temporo side
The most value added preparation in quadrant district+1.00D to+2.50D, the most value added preparation in nasal quadrants district+1.25D is extremely
+3.00D.4 the most value added ratios in quadrant district: nasal quadrants district ＞ Nie Ce quadrant district+0.50D to+
On the downside of 1.50D, Nie Ce quadrant district ＞, quadrant district+0.50D is to+0.75D, on the upside of quadrant district, downside ＞ as
Limit district+0.05D to+0.20D.
C, control lag out of focus corneal contact lens (type III): Nie Ce quadrant district and nasal quadrants district and
The downside the most value added preparation in quadrant district is more than+1.00D, and central area prepares 0.00D to-6.00D, upside as
Limit the most value added preparation in district+0.05D to+0.60D, the downside the most value added preparation in quadrant district+1.00D to+
1.50D, the Nie Ce the most value added preparation in quadrant district+1.00D to+2.50D, the most value added system in nasal quadrants district
Standby+1.25D to+3.00D.4 the most value added ratios in quadrant district: ＞ Nie Ce quadrant district of nasal quadrants district
+ 0.50D to quadrant district+0.10D on the downside of+1.50D, Nie Ce quadrant district ＞ to+1.00D, downside as
Quadrant district+0.10D to+1.00D on the upside of limit district ＞.Or by quadrant district, upside, Nie Ce quadrant district and
The most value added preparation in nasal quadrants district be less than+1.00D, the most value added preparation in quadrant district, downside more than+
1.00D。
The contact lens,soft diameter 12.0mm to 15.0mm of this corneal contact lens, contact lens,hard is straight
Footpath 8.5mm to 11.0mm, first base curve diameter 4.0mm of described interior minute surface, second base curve are straight
The inner region of footpath 4.0mm to 8.0mm, according to the pupil center diameter 4.0mm that corneal topography is corresponding
Prepare with two, 4.0mm to 8.0mm region anterior surface of cornea radius of curvature measurement value, radius of curvature ratio
Value: second base curve ＞ the first base curve, in contact lens, the radius of curvature ＞ anterior surface of cornea of minute surface base curve is bent
Rate radius 0.05mm to 0.8mm, contact lens,soft the second base curve radius of curvature prepares 8.3mm extremely
8.8mm, contact lens,hard the second base curve radius of curvature prepares 7.3mm to 11.0mm, described interior minute surface
First wide 0.4mm of limit arc, second limit arc width 0.3mm.
The present invention or a kind of many base curves corneal contact lens, in corneal contact lens, minute surface prepares 2 base curves,
First base curve correspondence cornea mid-diameter 3.0mm to 4.0mm region, week in the second base curve correspondence cornea
The inner region of 4.0mm to 8.0mm, the first base curve and the second base curve radius of curvature are according to individual prewired mirror
Prepared by the corneal topography corresponding region anterior surface of cornea radius of curvature measurement value of person's human eye, curvature half
Footpath ratio: second base curve ＞ the first base curve, the different refractive diopter of contact mirror surface-shaped preparation.
Present invention beneficial effect compared with prior art:
1, there is retinal periphery hypermetropia out of focus and control lag in juvenile myopia, and myopia eyeball is each
The refractive diopter of individual retinal periphery quadrant presents unsymmetry.Existing periphery out of focus corneal contact lens is deposited
Do not mating with each quadrant refractive diopter of retinal periphery, still producing peripheral refraction irregular
(hyperopic anisometropia), or can not precisely correct retinal periphery hypermetropia out of focus
And control lag.
2, this corneal contact lens of the present invention, face, corneal contact lens light school district shape is prepared as central area,
Nasal quadrants district, Nie Ce quadrant district, quadrant district, downside and region, 5, quadrant district, upside, quadrant district system
Standby difference is the most value added, has and matches, it is also contemplated that regard with each quadrant refractive diopter of retinal periphery
Nearly control lag, eyeglass aspheric surface optimize, and more conform to each quadrant area pathologic of myopia eyeball
Ametropia parameter, individuation based on eyeball physiology and eyeball optics customizes.
3, interior minute surface is prepared 2 base curves by this corneal contact lens of the present invention, examines with corneal topography
Surveying data guides corneal contact lens design, tradition keratometer only to measure Central corneal 3.0mm district
Territory, selects corneal contact lens scope curvature radius, table after corneal contact lens according to corneal opacities measured value
Face and anterior surface of cornea are fitted not science, cause Corneal Contact mirror curvature excessive or too small.By cornea
In contact lens, minute surface prepares 2 base curves, corneal contact lens laminating prepared by guidance of corneal topography parameter
More conform to anterior surface of cornea curvature, fit the most more scientific.
Accompanying drawing explanation
Fig. 1 is the regional schematic diagram of this Corneal Contact minute surface shape；
Fig. 2 is central area and the schematic diagram of transition region in this optics of contact lens district；
Fig. 3 is minute surface base curve and limit arc distribution schematic diagram in this corneal contact lens；
Fig. 4 is the base curve perspective view of minute surface in this corneal contact lens.
Symbol in figure: FZ: fixed area (fixed zone)；OZ: light school district (optic zone)；
CZ: central area (center Zone)；SZ: quadrant district, upside (Superior Zone)；On the downside of IZ
Quadrant district (Inferior Zone)；TZ: Nie Ce quadrant district (Temporal Zone)；NZ: nasal side
Quadrant district (Nasal Zone)；MZ: transition region (Mixing zone)；BC: base curve (Base curve；
BC)；BC1: the first base curve；BC2: the second base curve；PC: limit arc (peripheral curve)；PC1:
Oneth PC；PC2: the two PC.
Detailed description of the invention
This four-quadrant district periphery the most this corneal contact lens of out of focus corneal contact lens, this angle
Film contact lens refers to contact lens,soft (soft contact Lens；And the rigid cornea of high oxygen flow SCL)
Contact lens (Rigid Gas Permeable Contact Lens；RGPCL).This corneal contact lens is adopted
With existing soft or hard corneal contact lens material, using existing process technology to be prepared from, it is main
Wanting technical characteristic is contact mirror surface-shaped and the difference of preparation face shape parameter.
Below in conjunction with the accompanying drawings the corneal contact lens of the present invention is described in further detail:
Fig. 1 shows that Corneal Contact minute surface shape is set to light school district OZ and two main region of fixed area FZ,
Light school district OZ is divided into again central area CZ and 4 quadrant districts, 4 quadrant districts to be quadrant district, upside respectively
SZ, downside quadrant district IZ, Nie Ce quadrant district TZ and nasal quadrants district NZ.This corneal contact lens,
Can be understood as the periphery out of focus corneal contact lens of 5 optical regions, or, it is interpreted as 4 quadrants
The periphery out of focus corneal contact lens in region.
Fig. 2 shows central area and the schematic diagram of transition region in this optics of contact lens district, the central authorities in figure
District CZ is zhou duicheng tuxing, and shows that transition region MZ is distributed.Zhou duicheng tuxing refers to a figure
After straight line doubling, two parts are completely superposed, and such figure is called zhou duicheng tuxing, this
Straight line is called axis of symmetry.Vertical and divide the straight line of a line segment equally and be referred to as vertically dividing equally of this line segment
Line, or perpendicular bisector.Point on line segment perpendicular bisector is equal to the distance at line segment two ends.In axial symmetry
In figure, the corresponding point of axis of symmetry both sides are vertically divided equally by axis of symmetry, two figures of zhou duicheng tuxing
It is congruent.
Fig. 3 shows minute surface base curve (BC) and the distribution signal of limit arc (PC) in this corneal contact lens
Figure, wherein: BC1 be the first base curve, BC2 be the second base curve；PC1 be the first limit arc, PC2 be
Two limit arcs.
Fig. 4 shows the base curve perspective view of minute surface in this corneal contact lens, and BC1 is the first base curve,
Being positioned at cornea minute surface diameter 3.0mm to 4.0mm, BC2 is the second base curve, is positioned at cornea minute surface straight
Scope within the 6.0mm to 8.0mm of footpath.Also can be by the second base curve expanded range to 9.0mm to 10.0mm
Within scope.Base curve also can be prepared three base curves, the first base curve preparation 3.0mm to 4.0mm it
In, the second base curve is prepared within 4.0mm to 6.0mm, and the 3rd base curve is prepared at 6.0mm to 9.0mm
Within.
The optical area diameter of this corneal contact lens is prepared as between 6.0mm to 8.0mm, its objective is to fit
Answer pupil diameter size variation, normal person pupil diameter 2.0mm to 4.0mm, common people's pupil straight
Between the variable 1.5mm to 8.0mm of footpath, under sunburst, contracted pupil is to below 2.0mm, depending near
Or under half-light, pupil diameter expands, and generally can expand more than 6.0mm, and therefore optics of contact lens district is straight
6.0mm to 8.0mm is prepared in footpath, preferably selects optics of contact lens district diameter and prepares 6.5mm to 7.5mm, also
Optical area diameter can be expanded to 9.0mm.Light school district includes 1 central area and 4 quadrant districts, in
Centre district is correction of myopia retinal centre Myopia out of focus, and 4 quadrant area designs are to consider myopia
4 quadrant area peripheral refraction number of degrees unsymmetry of eyeball, it is also contemplated that nasal side and temporo side periphery hypermetropia
Out of focus is asymmetric, it is also contemplated that correct depending on nearly control lag, it is also contemplated that contact lens aspheric design.Central authorities
District's diameter prepares 0.8mm to 3.0mm, and each quadrant sector width prepares 1.0mm to 3.0mm.
This corneal contact lens central area prepares 0.00D to-6.00D, and major design purpose is to correct green grass or young crops
The juvenile myopia retinal centre Myopia out of focus number of degrees, but it is not intended to-6.00D the number of degrees, can be by
The myopic refractive number of degrees increase to-10.00D, wear adapting to high myopic eye.Design 0.00D dioptric
The number of degrees, it is therefore an objective to exist remote for the bathomorphic child of father and mother both sides, normal visual acuity or retinal periphery
Depending on property, out of focus person wears.
This contact lens each quadrant district preparation the most value added relative to central area, the most value added be relative in
Centre district refractive diopter addition, in other words, on the basis of the refractive diopter of central area, adds convex lens
Mirror degree number, because being the relative convex lens sheet number of degrees, therefore is referred to as the most value added, it is possible to popular being referred to as adds light,
Belong to positive refractive power to correct, add multiplying power rectification.
This corneal contact lens is mainly technically characterized ny 4 quadrant areas of design, 4 quadrant area systems
Standby the most value added relative to central area refractive diopter, wherein the upside the most value added preparation in quadrant district+0.05D is extremely
+ 1.00D, the downside the most value added preparation in quadrant district+0.07D are to the most value added system in+2.00D, Nie Ce quadrant district
Standby+0.09D to+3.00D, the most value added preparation in nasal quadrants district+0.11D extremely+3.50D.This angle
Film contact lens prepares the quadrant district of 4 different refractive diopters.Prepare panoramic limit district aspheric cornea
Contact lens, Nie Ce nasal quadrants district's corneal contact lens or control lag out of focus corneal contact lens.4
The most value added ratio in quadrant district: quadrant district on the upside of quadrant district ＞ on the downside of nasal quadrants district ＞ Nie Ce quadrant district ＞
＞ central optical zone.
The central area of this corneal contact lens is positioned at contact lens center, in addition to preparing circular, also
Can prepare horizontal oval or perpendicular ellipse, long axis width 0.8mm to 3.0mm, short axle is shorter than major axis
0.2mm to 1.0mm.
This corneal contact lens is prepared 4 quadrant areas, quadrant district, upside and the preparation of quadrant district, downside and is existed
Along the vertical radial line of optical center, Nie Ce quadrant district and nasal quadrants district prepare along optical center water
On flat radial line.4 quadrant district azimuth ratios: Nie Ce quadrant district and nasal quadrants district azimuth ＞
Or=90 °, quadrant district, upside azimuth ＞ or=azimuth, quadrant district, downside, quadrant district side, downside
Parallactic angle ＜ or=90 °.
Quadrant district is the most value added is contact mirror surface-shaped design important parameter, the most value added also refers to relative to central area
Refractive diopter bears depreciation, and the most value added is not each quadrant district actual refraction number of degrees, is relative to central area
The light number of degrees are added on refractive diopter basis.4 the most value added amounts in quadrant district or negative depreciation amount, according to central authorities
The 2% to 12% of district's diopter numerical value is as calculating, it is therefore an objective to guarantee that contact lens each quadrant district reaches non-
Spherical design.
Bathomorphic retina nasal side and temporo side periphery dioptric present hypermetropia out of focus, be cause eyeball to
The principal element of rear extension, temporo side retinal periphery, relative to nasal side more aobvious hypermetropia out of focus, presents not
Symmetry.Periphery is relative to dioptric (Relative peripheral refraction；RPR) refer to regard
The each field-of-view angle of nethike embrane periphery, relative to the refractive status of central fovea, i.e. refers to each peripheral field angle
The difference of spherical equivalent refraction and center recess.The most value added amount in Nie Ce quadrant district and nasal quadrants district, according to
Prepared by corresponding nasal side and 30 ° to 40 °, temporo side retinal periphery diopter numerical value.
The quadrant sector width of this corneal contact lens refers to quadrant district either vertically or horizontally footpath line width, extremely
Few each quadrant sector width is more than 2.5mm, and at least at optical center 1.5mm, the preparation of quadrant district just adds
The 50% of value amount, at least prepares 0.5mm quadrant district, at least central area radius at optical center 1.5mm
With each quadrant sector width sum more than 3.0mm, there are enough regions, enough guaranteeing to demonstrate,prove quadrant area
The most value added amount.It is stagnant that quadrant sector width is rectification retinal periphery hypermetropia out of focus, rectification regards nearly regulation
After region, region is too small affects rectification effect.Central area is to correct central authorities Myopia out of focus region,
Too small have tunnel vision.
Between the central area of corneal contact lens with quadrant district, between adjacent Liang Ge quadrant district, preparation
0.2mm to 1.0mm transition region, preferably selects 0.3mm to 0.4mm transition region, is put down by side refractive diopter
Within moving to opposite side, both sides refractive diopter melts into consistent.Preparation transition region, it is therefore an objective to eliminate two not
Aberration with refractive diopter region.
The central area of this corneal contact lens and quadrant district, upside, quadrant district, downside, Nie Ce quadrant district and
Nasal quadrants district, from the beginning of central area refractive diopter, the most value added, gradually according to each quadrant district refractive diopter
Enter the ground increasing dioptric number of degrees and form 4 quadrant transition regions.
The quadrant district of 4 different refractive diopters is prepared in 4 quadrant districts of this contact lens, and its face shape is such as
Lower three types, three kinds of face shapes are also the specific embodiments of this contact lens below:
Embodiment one: panoramic limit district aspheric cornea contact lens (I type)
All designing the most value added by these 4 quadrant areas of type corneal contact lens periphery, the most value added amount is little
In+1.00D, it is prepared as 4 quadrant area aspheric surfaces.Prepared by this type corneal contact lens central area
0.00D is to-6.00D, the upside the most value added preparation in quadrant district+0.05D to+0.60D, quadrant district, downside
The most value added preparation+0.07D to+0.70D, the Nie Ce the most value added preparation in quadrant district+0.09D to+0.90D,
The most value added preparation in nasal quadrants district+0.11D to+1.00D.4 the most value added ratios in quadrant district: nasal side
Quadrant district ＞ Nie Ce quadrant district+0.05D to quadrant district on the downside of+0.30D, Nie Ce quadrant district ＞+
0.05D to+0.20D, quadrant district+0.05D to+0.20D on the upside of quadrant district, downside ＞.This type
4 the most value added preparations in quadrant district of corneal contact lens are less than+1.00D.Ren Jianfeng, University Of Suzhou 2006
Year M Sc thesis elaboration: the most value added amount of the aspherical lens peripheral refraction number of degrees, it is common that+
1.00D to+1.25D.Aspherical lens compares spherical lens, have eyeglass get a clear view, the visual field
Broad, to wear comfortable, this type corneal contact lens purpose of design is to join for slight juvenile myopia
Wearing, retina nasal side and the temporo side periphery hypermetropia out of focus number of degrees are not the biggest.
Embodiment two: Nie Ce nasal quadrants district corneal contact lens (II type)
The most value added preparation in Nie Ce quadrant district and nasal quadrants district of this type corneal contact lens more than+
1.00D, central area prepares 0.00D to-6.00D, and the upside the most value added preparation in quadrant district+0.05D is extremely
+ 0.60D, the downside the most value added preparation in quadrant district+0.07D extremely+0.70D, Nie Ce quadrant district is the most value added
Preparation+1.00D to+2.50D, the most value added preparation in nasal quadrants district+1.25D extremely+3.00D.4
The most value added ratio in quadrant district: nasal quadrants district ＞ Nie Ce quadrant district+0.50D to+1.50D, temporo side as
Quadrant district+0.50D extremely+0.75D, quadrant district+0.05D on the upside of quadrant district, downside ＞ on the downside of limit district ＞
To+0.20D.The design of this type corneal contact lens had both considered to correct retina nasal side and temporo side periphery is remote
Depending on property out of focus, it is also contemplated that quadrant district, upside, central area and the aspheric design in quadrant district, downside.
Embodiment three: control lag out of focus corneal contact lens (type III)
The Nie Ce quadrant district of this type corneal contact lens and nasal quadrants district and quadrant district, downside just add
Value preparation is more than+1.00D, and central area prepares 0.00D to-6.00D, the most value added system in quadrant district, upside
Standby+0.05D to+0.60D, the downside the most value added preparation in quadrant district+1.00D to+1.50D, temporo side as
Limit the most value added preparation in district+1.00D to+2.50D, the most value added preparation in nasal quadrants district+1.25D to+
3.00D.4 the most value added ratios in quadrant district: nasal quadrants district ＞ Nie Ce quadrant district+0.50D to+
On the downside of 1.50D, Nie Ce quadrant district ＞, quadrant district+0.10D is to+1.00D, on the upside of quadrant district, downside ＞ as
Limit district+0.10D to+1.00D.Or by quadrant district, upside, Nie Ce quadrant district and nasal quadrants district just
Value added preparation is less than+1.00D, and the most value added preparation in quadrant district, downside is more than+1.00D.Depending on closely producing
Raw control lag hypermetropia out of focus, usual hysteresis is+0.75D to+1.50D, by this type
On the downside of corneal contact lens, the most value added preparation in quadrant district+1.00D to+1.50D, can have the most value added
For correcting control lag, correct control lag hypermetropia out of focus and control myopia degree development.Regulation
Delayed (Accommodative lag) is also called and regulates slow, regulation sluggishness, refers to that eye is regarding
Time near, practical adjustments reaction stimulates the slightly lower common state of one than regulation.Cause depending on control lag time near
Retinal periphery hypermetropia out of focus, promotes that eyeball growth, myopia degree increase.This type cornea connects
Touch mirror design, both considered that retina nasal side was corrected in Nie Ce quadrant district, nasal quadrants district and temporo side periphery is remote
Depending on property out of focus, it is also contemplated that quadrant district, downside correct regard nearly control lag, it is further contemplated that quadrant district, upside and
The aspheric design of central area.
The outer minute surface of the fixed area of this corneal contact lens is prepared prism ballast, bilateral skiving and blocks stable
Device, it is ensured that the firm corresponding each retinal periphery quadrant area of each quadrant area.Corneal contact lens
Firm technology is prior art, is typically used among the design of astigmatism contact lens, it is ensured that adherent lens consolidates,
Prevent displacement.Prism ballast method: be at contact lens envisaged underneath 1.0 Δ to 1.5 Δ prisms, due to weight
The relation of power, prism webbing is always shifted to direction down and is kept stablizing of eyeglass.Bilateral skiving method:
Being the skiving process of surrounding zone up and down at contact lens, thin district and eyelid, particularly upper eyelid interact,
Contact lens is made to be in dynamic stability.Block stabilization method: be below contact lens, to clip a part, wide about
0.5mm to 1.5mm, makes the part lacking limit be fixed on the purpose that lower margo palpebrae reaches to prevent rotating.
The interior minute surface of this corneal contact lens prepares base curve and limit arc.Base curve refers to the rear surface of central area
Curvature, with diopter (Diopter；D) or by radius of curvature mm represent as unit.Cornea connects
Touch mirror base curve to design according to anterior surface of cornea radius of curvature, generally use keratometer measurement to be subject to
Testing the corneal curvature radius of the person of joining, existing keratometer is only capable of gathering Central corneal 3mm diameter
Radius of curvature, so it is inaccurate to gather data according to keratometer.Existing corneal contact lens only designs
One base curve, cornea differs to edge from central authorities.Corneal contact lens base curve is more than cornea
Front surface radius of curvature, is easily caused corneal contact lens displacement.Corneal contact lens base curve is less than table before cornea
Curvature radius, causes corneal contact lens tension.
The present invention is by 2 base curves of mirror design in corneal contact lens, but is not intended to 2, can make
Standby more than 2 base curves, as designed 3 base curves, such as base curve diameter 4.0mm, 6.0mm and 8.0mm tri-
Individual base curve, or diameter 3.0mm to 4.0mm, 5.0mm to 6.0mm, 6.0mm to 8.0mm three
Base curve, it is also possible to middle all base curves are expanded at 9.0mm.Interior minute surface prepares 2 base curves, 2 base curves
Radius of curvature according to the corneal topography corresponding region anterior curvature of the cornea half of individual prewired mirror person's human eye
Prepared by footpath measured value.The anterior surface of cornea radius of curvature that corneal topography is measured is more accurate, degree of accuracy
With 0.05 to 0.1mm be one differential.
The contact lens,soft diameter 12.0mm to 15.0mm of this corneal contact lens, contact lens,hard is straight
Footpath 8.5mm to 11.0mm, first base curve diameter 4.0mm of interior minute surface, second base curve diameter 4.0mm
To the inner region of 8.0mm, according to pupil center diameter 4.0mm and 4.0mm that corneal topography is corresponding
Prepare to two, 8.0mm region anterior surface of cornea radius of curvature measurement value.Radius of curvature ratio: second
Base curve ＞ the first base curve.The radius of curvature ＞ anterior surface of cornea curvature of minute surface base curve half in corneal contact lens
Footpath 0.05mm to 0.8mm, contact lens,soft the second base curve radius of curvature prepares 8.3mm to 8.8mm,
Contact lens,hard the second base curve radius of curvature prepares 7.3mm to 11.0mm, described interior minute surface first
The individual limit wide 0.4mm of arc, second limit arc width 0.3mm.
The present invention or a kind of many base curves corneal contact lens, for contact lens,soft or contact lens,hard, connect
In touching mirror, minute surface prepares 2 base curves, the first base curve correspondence cornea mid-diameter 3.0mm to 4.0mm district
Territory, the inner region in week 4.0mm to 8.0mm in the second base curve correspondence cornea.First base curve and the second base
Arc radius of curvature is bent according to the corneal topography corresponding region anterior surface of cornea of individual prewired mirror person's human eye
Prepared by rate radius measurement, radius of curvature ratio: second base curve ＞ the first base curve, contacts mirror surface-shaped system
Standby different refractive diopter.
The corneal contact lens of the present invention has rectification retinal periphery hypermetropia out of focus, corrects regarding nearly regulation
Aspheric surface effect design of hysteresis, have that the visual field is broad, it is comfortable to wear, without anisometropia generation,
The technical advantages such as determined curative effect, produce unforeseeable technique effect, have prominent substantive distinguishing features and
The progress of significance.
Finally should illustrate: to this specification describe light school district, fixed area central area, upside quadrant
District, quadrant district, downside, Nie Ce quadrant district, nasal quadrants district, transition region, base curve and the shape of limit arc,
Size, the most value added etc. changes and modifications, and it is also within the scope of the invention.
Claims (10)
1. corneal contact lens, for contact lens,soft or contact lens,hard, it is characterised in that connect described in:
Tactile mirror surface-shaped includes that light school district and fixed area, interior minute surface prepare base curve and limit arc,
Described optical area diameter 6.0mm to 8.0mm, including 1 central area and 4 quadrant districts, in
Centre district diameter 0.8mm to 3.0mm, each quadrant sector width 1.0mm to 3.0mm, prepared by central area
0.00D to-6.00D, 4 quadrant district preparations are the most value added relative to central area, and quadrant district, upside just adds
Value preparation+0.05D is to+1.00D, the downside the most value added preparation in quadrant district+0.07D to+2.00D, temporo
The side the most value added preparation in quadrant district+0.09D extremely+3.00D, the most value added preparation in nasal quadrants district+0.11D
To+3.50D, the quadrant district of 4 different refractive diopters of preparation, prepare panoramic limit district aspheric surface
Corneal contact lens, Nie Ce nasal quadrants district's corneal contact lens or control lag out of focus corneal contact lens,
4 the most value added ratios in quadrant district, on the downside of nasal quadrants district ＞ Nie Ce quadrant district ＞ on the upside of quadrant district ＞ as
Limit ＞ central optical zone, district；
Described interior minute surface prepares 2 base curves, and the radius of curvature of 2 base curves is according to individual prewired mirror person people
Prepared by the corneal topography corresponding region anterior surface of cornea radius of curvature measurement value of eye；
The outer minute surface of described fixed area is prepared prism ballast, bilateral skiving and blocks stabilising arrangement, stably connects
Touch mirror position.
2. the corneal contact lens as described in claim 1, it is characterised in that: described central area is positioned at
Contact lens center, the horizontal oval or perpendicular ellipse of preparation, long axis width 0.8mm to 3.0mm is short
Axle is shorter than major axis 0.2mm to 1.0mm.
3. the corneal contact lens as described in claim 1, it is characterised in that: described quadrant district, upside
With the preparation of quadrant district, downside along the vertical radial line of optical center, Nie Ce quadrant district and nasal quadrants district
Prepare along the horizontal radial line of optical center, 4 quadrant district azimuth ratios, Nie Ce quadrant district and
Nasal quadrants district azimuth ＞ or=90 °, quadrant district, upside azimuth ＞ or=quadrant district, downside
Azimuth, quadrant district, downside azimuth ＜ or=90 °.
4. the corneal contact lens as described in claim 1, it is characterised in that: described quadrant district is the most value added,
Also refer to bear depreciation relative to central area refractive diopter, 4 the most value added amounts in quadrant district or negative depreciation amount,
Calculate according to 2% to 12% conduct of central area diopter numerical value, or, Nie Ce quadrant district and nasal side
The most value added amount in quadrant district, according to corresponding nasal side and 30 ° to 40 °, temporo side retinal periphery refractive diopter
Value preparation.
5. the corneal contact lens as described in claim 1, it is characterised in that: described quadrant sector width
Referring to quadrant district either vertically or horizontally footpath line width, the most each quadrant sector width is more than 2.5mm, extremely
At optical center 1.5mm, the 50% of the most value added amount is prepared in quadrant district less, at least away from optical center 1.5mm
Place preparation 0.5mm quadrant district, at least central area radius are more than with each quadrant sector width sum
3.0mm。
6. the corneal contact lens as described in claim 1, it is characterised in that: described central area with as
Between limit district, between adjacent Liang Ge quadrant district, prepare 0.2mm to 1.0mm transition region, by side dioptric
Within the number of degrees move to opposite side, both sides refractive diopter melts into consistent.
7. the corneal contact lens as described in claim 1, it is characterised in that: described central area is with upper
Quadrant district, side, quadrant district, downside, Nie Ce quadrant district and nasal quadrants district, open from central area refractive diopter
Beginning, the most value added according to each quadrant district refractive diopter, the increasing dioptric number of degrees form 4 quadrants gradually progressively
Become district.
8. the corneal contact lens as described in claim 1, it is characterised in that: 4 described quadrant districts
The quadrant district of 4 different refractive diopters of preparation, its face shape such as Types Below,
A, panoramic limit district aspheric cornea contact lens (I type), 4 the most value added preparations in quadrant district are less than
+ 1.00D, central area prepares 0.00D to-6.00D, and the upside the most value added preparation in quadrant district+0.05D is extremely
+ 0.60D, the downside the most value added preparation in quadrant district+0.07D are to the most value added system in+0.70D, Nie Ce quadrant district
Standby+0.09D to+0.90D, the most value added preparation in nasal quadrants district+0.11D to+1.00D, 4 as
The most value added ratio in limit district, nasal quadrants district ＞ Nie Ce quadrant district+0.05D to+0.30D, temporo side quadrant
Quadrant district+0.05D to+0.20D on the downside of district ＞, on the upside of quadrant district, downside ＞, quadrant district+0.05D is extremely
+0.20D；
B, Nie Ce nasal quadrants district's corneal contact lens (II type), Nie Ce quadrant district and nasal quadrants district are just
Value added preparation is more than+1.00D, and central area prepares 0.00D to-6.00D, the most value added system in quadrant district, upside
Standby+0.05D to+0.60D, the downside the most value added preparation in quadrant district+0.07D to+0.70D, temporo side as
Limit the most value added preparation in district+1.00D to+2.50D, the most value added preparation in nasal quadrants district+1.25D to+
3.00D, 4 the most value added ratios in quadrant district, nasal quadrants district ＞ Nie Ce quadrant district+0.50D to+
Quadrant district+0.50D to+0.75D on the downside of 1.50D, Nie Ce quadrant district ＞, on the upside of quadrant district, downside ＞
Quadrant district+0.05D to+0.20D；
C, control lag out of focus corneal contact lens (type III), Nie Ce quadrant district and nasal quadrants district and
The downside the most value added preparation in quadrant district is more than+1.00D, and central area prepares 0.00D to-6.00D, upside as
Limit the most value added preparation in district+0.05D to+0.60D, the downside the most value added preparation in quadrant district+1.00D to+
1.50D, the Nie Ce the most value added preparation in quadrant district+1.00D to+2.50D, the most value added preparation in nasal quadrants district
+ 1.25D to+3.00D, 4 the most value added ratios in quadrant district, ＞ Nie Ce quadrant district of nasal quadrants district+
Quadrant district+0.10D to+1.00D, downside quadrant on the downside of 0.50D to+1.50D, Nie Ce quadrant district ＞
On the upside of district ＞, quadrant district+0.10D is to+1.00D, or by quadrant district, upside, Nie Ce quadrant district and
The most value added preparation in nasal quadrants district be less than+1.00D, the most value added preparation in quadrant district, downside more than+
1.00D。
9. the corneal contact lens as described in claim 1, it is characterised in that: described contact lens,soft
Diameter 12.0mm to 15.0mm, contact lens,hard diameter 8.5mm to 11.0mm, described interior minute surface
First base curve diameter 4.0mm, the inner region of second base curve diameter 4.0mm to 8.0mm, depend on
According to the Liang Ge angle, pupil center diameter 4.0mm and 4.0mm to 8.0mm region that corneal topography is corresponding
Prepared by film front surface radius of curvature measurement value, radius of curvature ratio: second base curve ＞ the first base curve, connects
In tactile mirror, the radius of curvature ＞ anterior surface of cornea radius of curvature 0.05mm to 0.8mm of minute surface base curve, soft
Property contact lens the second base curve radius of curvature prepare 8.3mm to 8.8mm, contact lens,hard the second base curve is bent
Rate radius prepares 7.3mm to 11.0mm, described interior minute surface first wide 0.4mm of limit arc, second
Individual limit arc width 0.3mm.
10. corneal contact lens, for contact lens,soft or contact lens,hard, it is characterised in that connect described in:
In touching mirror, minute surface prepares 2 base curves, the first base curve correspondence cornea mid-diameter 3.0mm to 4.0mm
Region, the inner region in week 4.0mm to 8.0mm, the first base curve and second in the second base curve correspondence cornea
Base curve radius of curvature is according to the corneal topography corresponding region anterior surface of cornea of individual prewired mirror person's human eye
Prepared by radius of curvature measurement value, radius of curvature ratio: second base curve ＞ the first base curve, contacts mirror surface-shaped
The different refractive diopter of preparation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610331538.XA CN105974605A (en) | 2016-05-10 | 2016-05-10 | Four-quadrant area ambitus out-of-focus corneal contact lens |
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|---|---|---|---|
| CN201610331538.XA CN105974605A (en) | 2016-05-10 | 2016-05-10 | Four-quadrant area ambitus out-of-focus corneal contact lens |
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| CN105974605A true CN105974605A (en) | 2016-09-28 |
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| CN107728338A (en) * | 2017-12-06 | 2018-02-23 | 爱博诺德（北京）医疗科技有限公司 | Ortho-K |
| CN109407341A (en) * | 2018-11-21 | 2019-03-01 | 欧普康视科技股份有限公司 | The hard contact eyeglass and its manufacturing method of a kind of reduction side central distance vision defocus |
| CN110235051A (en) * | 2016-12-23 | 2019-09-13 | 卡普里科尼亚隐形眼镜私人有限公司 | Contact lens |
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| CN110235051A (en) * | 2016-12-23 | 2019-09-13 | 卡普里科尼亚隐形眼镜私人有限公司 | Contact lens |
| CN110235051B (en) * | 2016-12-23 | 2022-08-05 | 卡普里科尼亚隐形眼镜私人有限公司 | Contact lens |
| US11415816B2 (en) | 2016-12-23 | 2022-08-16 | Capricornia Contact Lens Pty Ltd | Contact lens |
| CN111447899A (en) * | 2017-11-24 | 2020-07-24 | 蒙特利尔大学 | Medical devices and methods for managing eye axial length growth against the background of ametropia development |
| CN107728338A (en) * | 2017-12-06 | 2018-02-23 | 爱博诺德（北京）医疗科技有限公司 | Ortho-K |
| CN107728338B (en) * | 2017-12-06 | 2024-01-26 | 爱博诺德(北京)医疗科技股份有限公司 | Cornea shaping mirror |
| US11662606B2 (en) | 2017-12-06 | 2023-05-30 | Eyebright Medical Technology (Beijing) Co., Ltd. | Orthokeratology lens and method for making orthokeratology lenses |
| CN109407341B (en) * | 2018-11-21 | 2023-09-08 | 欧普康视科技股份有限公司 | Hard contact lens for reducing paracentral hyperopia and defocus and manufacturing method thereof |
| CN109407341A (en) * | 2018-11-21 | 2019-03-01 | 欧普康视科技股份有限公司 | The hard contact eyeglass and its manufacturing method of a kind of reduction side central distance vision defocus |
| CN111708183A (en) * | 2018-12-25 | 2020-09-25 | 天津医科大学眼科医院 | Lens of cornea shaping mirror |
| CN111897141A (en) * | 2018-12-25 | 2020-11-06 | 天津医科大学眼科医院 | Peripheral out-of-focus lens and frame glasses |
| CN112612145A (en) * | 2020-12-22 | 2021-04-06 | 爱尔眼科医院集团股份有限公司 | Corneal contact lens |
| CN114994948A (en) * | 2022-07-19 | 2022-09-02 | 欧普康视科技股份有限公司 | Frame spectacle lens |
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Application publication date: 20160928 |