CN101396259B - Eye detection device - Google Patents
Eye detection device Download PDFInfo
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- CN101396259B CN101396259B CN2008101662901A CN200810166290A CN101396259B CN 101396259 B CN101396259 B CN 101396259B CN 2008101662901 A CN2008101662901 A CN 2008101662901A CN 200810166290 A CN200810166290 A CN 200810166290A CN 101396259 B CN101396259 B CN 101396259B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/032—Devices for presenting test symbols or characters, e.g. test chart projectors
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/02—Subjective types, i.e. testing apparatus requiring the active assistance of the patient
- A61B3/028—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for testing visual acuity; for determination of refraction, e.g. phoropters
- A61B3/0285—Phoropters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/103—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for determining refraction, e.g. refractometers, skiascopes
Abstract
The present invention provides an eye detector which detects the focal power of the eye being detected. The eye detector according to the invention causes that the person which is been detected and is short of professional knowledge can easily realize the observing effect of various correcting lenses, and furthermore the person being detected is easy to explain and use the observing effects of various correcting lenses. The eye detector comprises the following components: a data obtaining unit which obtains the adjusting power of the eye being detected based on the operation distance when a total correcting degree, a remote recipe correcting degree, an adding degree or near degree and near point distance are used or a degree measuring is added; a calculating unit which calculates the photopic vision zone of the eye which is detected and is corrected by at least one lens from a certain remote single-focus lens, a certain near single-focus lens and a certain progressive lens according to the obtained data; and a display unit which displays the graphic solution when the preset near distance, remote distance and middle distance are respectively configured with a target object and the person which is detected is used as a fundamental point on a picture, and displays the photopic vision zone obtained through the calculating unit with graphic presentation.
Description
Technical field
The present invention relates to the ophthalmic unit according to the photopic vision district of conscious each correcting lens of inspection eye data show.
Background technology
When having ametropia in the detected eye, in order to determine the rectification number of degrees to its eyeglass lens of correcting, use the ophthalmic unit (for example, opening flat 8-266467 communique with reference to the spy) of the focal power of consciously measuring eyes.In addition, propose the determination data of the with good grounds near point of being made by the near point instrumentation and feel that by him the focal power (or number of degrees of present correcting lens) that formula eye focal power determinator obtains comes figure to show the device (for example, opening flat 9-182722 communique with reference to the spy) in the photopic vision district from the near point to the far point.
Summary of the invention
Yet when stepping into person in middle and old age, human eye will become the presbyopia that regulating power reduces, be difficult to visible at one's side near nearby.Therefore, for the correction of refractive errors of detected eye, not only need the correcting lens of hypermetropia, also need the correcting lens of myopia.In the rectification of hypermetropia and myopia, except the single focal lense of the single focal lense that uses usefulness far away respectively, nearly usefulness, also use non-boundary ground to cover the progressive lenses of the distance usefulness from the hypermetropia to myopia.And then, as progressive lenses, have nearest progressive lenses (cover from the progressive lenses of the myopia to about the 60cm) at one's side, nearly progressive lenses (cover from the progressive lenses of the middle distance to about the 2m) at one's side.
Like this, the examinee selects and the rectification number of degrees of eyes, the corresponding correcting lens of visual environment that the examinee needs, but the examinee of shortage Professional knowledge does not know to use the observing effect of each correcting lens, is difficult to select suitable correcting lens.In addition, the examiner of eyes shop or ophthalmology also is difficult to the examinee is illustrated the observing effect that utilizes various correcting lens rightly.
In view of above-mentioned prior art, technical task of the present invention is to provide a kind of ophthalmic unit, when selecting correcting lens, even the examinee of shortage Professional knowledge also can understand the observing effect based on various correcting lens easily, the examiner also can illustrate the observing effect that utilizes various correcting lens easily.
Description of drawings
Fig. 1 is the summary construction diagram of ophthalmic unit.
Fig. 2 A is the key diagram of the operating surface board that has of functional unit.
Fig. 2 B is the figure of the mensuration picture example of display.
Fig. 3 is the control block diagram of functional unit.
Fig. 4 is the figure of example of the flow process of the conscious inspection step of explanation.
Fig. 5 is the figure of example that the arithmetic expression of near point NP, far point FP and intermediate point MP is shown, and is the catalog be used to the calculating formula that calculates the photopic vision district.
Fig. 6 is the figure that the example of photopic vision district display frame is shown.
Fig. 7 is the figure that the example of photopic vision district display frame is shown.
Fig. 8 is the figure that the example of photopic vision district display frame is shown.
Fig. 9 is the figure that the example of photopic vision district display frame is shown.
Figure 10 is the figure that the example of photopic vision district display frame is shown.
Figure 11 is the figure that the picture example of the data list that demonstrates the prescription rectification number of degrees is shown.
Figure 12 is based on the structure chart of personal computer.
Figure 13 is the figure that the example of photopic vision district display frame is shown.
Figure 14 is the figure that the example of photopic vision district display frame is shown.
Figure 15 is the figure that the example of photopic vision district display frame is shown.
The specific embodiment
In order to solve above-mentioned problem, the invention is characterized in to have following such structure.
Below, with reference to the accompanying drawings one embodiment of the present of invention are described.Fig. 1 is the summary construction diagram of ophthalmic unit.Ophthalmic unit comprises: in the components of assays (conscious formula eye focal power determinator) 3 of the various optical elements of left and right sides inspection hatch 6 handover configurations; Show the visual target presenting device 2 that checks sighting target at display 2a such as liquid crystal; Input makes the functional unit 1 of the command signal that components of assays 3 and visual target presenting device 2 move; And the relay part 4 that the transmission reception of the command signal in these devices is carried out relaying.Functional unit 1 has the display 21 that shows inspection eye information, double as inspection eye information display device.
In the inside of components of assays 3, be built-in with at left and right sides inspection hatch 6 lens disks such as spherical lens dish, cylindrical lens dish, auxiliary lens dish of optical element such as handover configurations correcting lens respectively.In addition, in components of assays 3, the near with rod 8 of subsidiary scale that can the instrumentation distance is installed, the nearly sighting target 5 of using is installed near on rod 8 movably.When checking, before eyes fell closely with rod 8 near, closely being configured to sighting target 5 can be from left and right sides inspection hatch 6 visuognosis.When checking, nearly with rod 8 with closely keep out of the way retreating position with sighting target 5, present the inspection sighting target at visual target presenting devices 2 with the inspection distance far away such as being positioned over 5m far away.
Functional unit 1 comprises: the display 21 that shows the touch-screen type of inspection eye information; With the operating surface board 32 with various operated keys.In addition, display 21 double as inspection eye back shows the display unit in photopic vision district.Shown in Fig. 2 A, operating surface board 32 comprises: have the mensuration eye options button group 33 of measuring the key of eye about specifying individually or simultaneously; Mode key group 34 with key of adjustment modes such as specifying spherical degree S, astigmatism degree C, astigmatic shaft angle degree A, adding number of degrees ADD; Input data assignment key group 35 with the key of specifying input data such as his feel value/conscious value/prescription values; The graduated disc knob 36 that uses when the change of measured values such as S, C, ADD and numerical value input; Make the Menu key 37 of menu screen demonstration at display 21; Dispose the inspection eye program key group 38 of carrying out the initiating key when being predetermined the inspection eye program that checks step and sending key; And switch key 39 etc.When switch key 39 and another key were pressed simultaneously, the switching function of other key was switched to other functions.
The example of the mensuration picture of the display 21 when Fig. 2 B is mensuration.On near the display part 21a the picture central authorities, show the mensuration number of degrees (spherical degree S, astigmatism degree C, astigmatic shaft angle degree A, adding number of degrees ADD) of the optical system in the inspection hatch that is configured in components of assays 3.Specify the number of degrees that to adjust by the switch that mode key group 34 has.On the picture right side, be provided with sighting target selectionbar 22, can utilize each key of selectionbar 22 to select to be presented at inspection sighting target on the visual target presenting device 2.In addition, check that sighting target shows in the pattern mode in display part 23.In the example of Fig. 2 A, demonstrate at the nearly cross grid sighting target that uses when checking of using.
Fig. 3 is the control block diagram of functional unit 1.Switching signal from the touch function of the switching signal of operating surface board 32 and display 21 is imported into control part 20.Control part 20 is according to the demonstration of switching signal control display 21, and the control signal that relevant focal power is measured sends to components of assays 3, and the relevant control signal of sighting target that checks is sent to visual target presenting device 2.Be connected with storage at control part 20 and check that data, photopic vision district show the memorizer 24 of the program of usefulness etc.
Then, use is had the ophthalmic unit of said structure, decide the inspection eye step for the rectification number of degrees of the ametropia of the eyes of correcting the examinee to describe (with reference to the flow chart of Fig. 4).
At first, the mensuration picture of displayed map 2B on display 21, by handover configurations spherical lens, astigmat in the inspection hatch that operates in components of assays 36 of functional unit 1, determine the inspection of the number of degrees of rectification fully (the best polarization number when obtaining the highest vision far away from correcting the number of degrees) of right and left eyes usefulness far away separately respectively.In the simple eye decision of correcting the number of degrees fully checks, adjust spherical degree S by R/G (red green) inspection of before the astigmatism inspection, carrying out, adjust astigmatism axle A by the axial adjustment inspection, check astigmatism number of degrees C by the astigmatism degree adjustment.Then, the 2R/G of high vision checks being used for preventing overcorrection and obtaining, adjust again after the spherical degree S, confirm to check to be adjusted into by vision to obtain the spherical degree S of the best polarization number of high vision, thereby determine the simple eye number of degrees of rectification fully.If after having determined the simple eye number of degrees of rectification fully, decide the number of degrees of rectification fully of another eyes by same inspection.Then, present the balance check sighting target, decision has obtained two two of balance and has corrected the number of degrees fully, with the number of degrees of the best polarization number that becomes identical observing effect in the eyes of the left and right sides.In each checks, by each key of the selectionbar 22 in the mensuration picture that shows at display 21, make far to be presented on the visual target presenting device 2 with the inspection sighting target.When carrying out inspection eye program, show preprogrammed sighting target by checking that step is switched.
After having determined two the number of degrees of rectification fully, shift and check, the rectification number of degrees of the eyeglass lens that the glasses with the examinee experience, wear so far etc. are reference, decision is corrected the number of degrees with the prescription that S, C weaken in the usefulness far away after the adjustment so that examinee's eyes correct the number of degrees fully to two can be tired.For example, under bathomorphic situation, with respect to the previous eyeglass lens number of degrees, increasing of spherical degree S surpass-0.75D and when great changes will take place, eyes are tired easily, so as increasing to-0.75D (3 stage), determine the prescription of usefulness far away to correct the number of degrees (for the adjustment that the prescription of usefulness far away is corrected the number of degrees, opening flat 8-266467 communique etc. with reference to the spy).
After the prescription that has determined usefulness far away was corrected the number of degrees, the switching manipulation of the mode key group 34 by functional unit 1 was made as and adds number of degrees adjustment modes, transfer to use near with checking the near with checking of sighting target 5.In adding number of degrees adjustment modes, the rectification optical system of components of assays 3 is configured to correct fully the number of degrees.In addition, dispose intersection post lens (having the lens that intersection cylinder ± 0.50D and its negative axle are configured to 90 degree) in the left and right sides inspection hatch of components of assays 3.With the setting that checks sighting target 5, as operation distance W D, 40cm before examinee (or the operation distance W D that wishes) locates to present cross grid sighting target near.And, by adjusting with respect to the spherical degree of correcting the number of degrees fully, roughly be equal to so that the ordinate of cross grid sighting target and horizontal line look, thereby determine to add number of degrees ADD.The adding number of degrees ADD that determines by the inspection of having used cross grid sighting target is determined into the number of degrees when having used adjusting power that the examinee has only about half of.
In addition, can operate each key of functional unit 1, use the input picture of regulation to import operation distance W D.The adding number of degrees ADD of prescription obtains by computing with the difference that prescription is corrected the number of degrees from correcting the number of degrees fully.Be preferably, in components of assays 3, use the rectification optical system of the adding number of degrees ADD be provided with prescription to carry out vision and confirm and adjust, thereby determine the adding number of degrees ADD of prescription.
Then, by the key operation of functional unit 1, set the pattern of the adjusting near point inspection that is used for mensuration adjusting power NPA.In regulating the near point inspection, for example correct fully under the state of optical system of the number of degrees having disposed, use closely with the vision value sighting target that checks the little literal that sighting target 5 has, gradually near eyes, use nearly scale with rod 8 or scale to read that sighting target does not blur and minimum range that can visuognosis is anomalistic distance NP (unit: m) this sighting target.In the pattern of regulating the near point inspection, by graduated disc knob 36 input anomalistic distance NP (units: m).
At this, when anomalistic distance is made as NP, when the far point distance is made as FP, regulate power NPA (unit: diopter) obtain with following formula usually.
NPA＝1/NP-1/FP
In conscious inspection eye, be difficult to instrumentation far point FP, so correct instrumentation anomalistic distance NP under the state of correcting lens of state fully having disposed usefulness far away.Far point FP can be considered as infinity, so the power of adjusting NPA obtains by following formula.
NPA＝1/NP
In addition, can't see clearly under the situation of 40cm with interior detected eye nearby, to the additional plus lens of the complete correction degree number of usefulness far away.And, when these number of degrees are come instrumentation anomalistic distance NP as Δ PA, obtain by following formula.
NPA＝1/NP-ΔPA
When measuring near point under having added the state that adds number of degrees ADD, Δ PA becomes ADD.
In addition, as other the method for obtaining, even do not carry out the mensuration of anomalistic distance, also can use the usefulness far away that obtains by conscious inspection eye correct fully the number of degrees, prescription correct the number of degrees, by having used the near with checking the adding number of degrees ADD that determines, operation distance W D at this moment of cross grid sighting target, obtain simply by following arithmetic expression.In addition, be preferably the adjusting power of only using certain ratio Δ X, obtain and add number of degrees ADD, the value when not making eyestrain.Δ X uses the value between 1/3～2/3, generally uses 1/2.
NPA=(1/WD-(spherical degree of equal value+prescription adding number of degrees ADD of (prescription is corrected the number of degrees-correct the fully number of degrees)) * 1/ Δ X
Under any circumstance, can both be considered as regulating power NPA equates.In addition, strictly speaking, in right eye and left eye, it is different regulating power NPA, even but be made as right and left eyes and all have identical adjusting power, as long as in the explanation in the photopic vision district of following explanation, become target, so problem is very little on the practicality.
As mentioned above, to correct fully by two of the resulting usefulness far away that contains spherical degree S, astigmatism degree C of the inspection eye of functional unit 1 and components of assays 3 number of degrees data, the data with prescription correction degree number far away, add number of degrees ADD data, regulate the basic data that the data (or as the basis that is used for calculating NPA data such as anomalistic distance) of power NPA check as the photopic vision district and be input to memorizer 24, and with its storage.
Then, obtain conscious check result as described above after, when the operation of examiner by Menu key 37 touches " check of photopic vision district " in the menu item of selecting to be presented on the display, execution photopic vision district display routine.By the execution of photopic vision district display routine, the picture of display 21 is switched to photopic vision district check picture 100 as shown in Figure 6.For the eyes that can comparatively be reflected in the examinee easily in naked apparent time with the difference in these photopic vision districts when having worn various correcting lens, and in this photopic vision district check picture 100, prepared following such diagram (graphic).
In photopic vision district check picture 100, the photopic vision district figure 102 the when eyes that show the examinee in right side area 101 are bore hole, correcting lens for the photopic vision district figure 103, correcting lens during with single focal lense (far away single) far away photopic vision district figure 105 during for nearly photopic vision district figure 104, far and near progressive lenses during with single focal lense (near single), in photopic vision district figure 108 during photopic vision district figure 107, bifocus (double focus) lens during photopic vision district figure 106, nearest progressive lenses during near progressive lenses.In addition, demonstration " bore hole " shows 112 below photopic vision district figure 102.And, below the photopic vision district of each correcting lens figure 103～108, dispose " far away single " key 113, " near single " key 114, " distance " key 115, " near " key 116, " recently " key 117, " two-fold " key 118, and as the key of demonstration and the selection of each correcting lens of double as.
In addition, in the zone 130 in the left side of picture 100, show to be used for the distance in reflection photopic vision district and the diagram of field range easily.For example, with respect to examinee's pattern 132, the pattern 136 of the TV monitor pattern 135 of the object about the indoor 2m of nearly display pattern 134 with operation, the reflection that has shown nearly simulation with operation about reflection 40cm about the pattern 133 of keyboard, reflection 60cm, the scenery in a reflection distant place etc.In addition, schematically be illustrated in these pattern overlappings and the distance in the photopic vision district during by the observation of various lens and the regional diagram 140 of field range.In addition, between right side area 101 and left field 130, show both common distance axis 120, the distance that becomes target is labeled.
By selecting to be configured in some in the correcting lens options button 113～118 under each photopic vision district figure, regional diagram 140 is changed to the demonstration corresponding with this correcting lens.The range direction of zone diagram 140 represents to reflect the scope in the photopic vision district of selected correcting lens, the two-dimensional expansion of the field range the when transverse width of regional diagram 140 is represented to have reflection and worn selected correcting lens.The regional diagram 140 of each correcting lens is stored in the memorizer 24, accesses and shows corresponding content according to the selection signal (the selection signal of key 113～118) of correcting lens.For the range direction of regional diagram 140, also can be according to the far point of each correcting lens described later and the operation result of near point, in the scope identical with each figure 103～108, form.
At the photopic vision district figure 102～108 and the regional diagram 140 that show at picture 100, far away from correcting the number of degrees (correcting the number of degrees, far away from prescription correction degree number fully for two of usefulness far away), add number of degrees ADD, regulate power NPA (or as the basis that is used for calculating NPA data such as anomalistic distance) according to what import by above-mentioned conscious inspection, by control part 20 calculate the bore hole of following explanation and correct by various correcting lens after far point, near point and the intermediate point of eyes.In addition, computing for the far point of each photopic vision district figure 102～108, near point etc., because the sphere of equal value of right and left eyes and to add the number of degrees substantially the same, thus be benchmark with the right eye, but also can switch to the demonstration of the observing effect of right eye or left eye by right and left eyes options button 141.In addition, can be benchmark with the eye of better usefulness also.Perhaps, when display space has surplus, in each photopic vision district figure, two photopic vision district figure about also can arranging and showing.In addition, it is benchmark that the demonstration in photopic vision district is corrected the number of degrees with prescription basically, but when pressing " conscious " key 142, switches to correct the demonstration that the number of degrees are benchmark fully with usefulness far away.When pressing " prescription " key 143, switching to and correcting the number of degrees with the prescription of usefulness far away is the demonstration of benchmark.
Below, at each photopic vision district figure 102～108, the computing of near point NP, far point FP and intermediate point MP is described (with reference to Fig. 5) respectively.In addition, in the computing in the photopic vision district of each figure of Fig. 6, to being that benchmark and the example that used prescription to correct the number of degrees describe with the right eye.
At first, in the photopic vision district of bore hole figure 102, its far point FP obtains with the inverse of two spherical degree SE of equal value that correct the number of degrees fully (below, abbreviate " intact SE " as).In addition, spherical degree SE of equal value is as well-known by add half number of degrees of obtaining of astigmatism degree C to spherical degree S.The near point NP of bore hole obtains with the inverse of (intact SE+NPA).In addition, used the intermediate point MP of the half of detected adjusting power NPA that has to obtain with the inverse of (intact SE+NPA/2).
In photopic vision district figure 103 with single focal lense (far away single) far away, its far point FP obtains with the inverse of the spherical degree SE of equal value of (prescription is corrected the number of degrees-correct the fully number of degrees) (below, abbreviate " locating-finish " SE as).Near point NP obtains with the inverse of ((locating-finish) SE+NPA).In addition, intermediate point MP obtains with the inverse of ((locating-finish) SE+NPA/2).
In nearly photopic vision district figure 104 with single focal lense (near single), its far point FP is to use adding number of degrees ADD in the prescription (below, abbreviate " locating ADD " as), and obtain with the inverse of ((locating-finish) ADD of SE+ place).Near point NP obtains with the inverse of ((locating-finish) ADD+NPA of SE+ place).In addition, intermediate point MP uses operation distance (below, abbreviate " locating WD " as) when having determined the adding number of degrees ADD of prescription.At this, determined to correct fully and the distance of the operation the during ADD that writes out a prescription has all been used 40cm.
In the photopic vision district figure 105 of the progressive lenses of distance, its far point FP similarly uses the inverse of (locating-finish) SE to obtain with far away during with single focal lense.Near point NP is to use with near to obtain with the identical calculating of single focal lense with intermediate point MP.
In in the photopic vision district figure 106 of near progressive lenses, its far point FP is made as 200cm as target, if but the inverse of (locating-finish) SE becomes the value less than 200cm, then should be worth as far point FP.Near point NP is to use with near to obtain with the identical calculating of single focal lense with intermediate point MP.
In the photopic vision district of nearest progressive lenses figure 107, its far point FP is made as 60cm as target, if but the inverse of (locating-finish) SE becomes the value less than 60cm, then should be worth as far point FP.Near point NP is to obtain with the identical calculating of single focal lense with near with intermediate point MP.
In the photopic vision district figure 108 in bifocal lens, far obtaining far point, near point and intermediate point respectively with portion with in closely with portion.Far far point FP, near point NP and the intermediate point MP with portion uses with far away to obtain with the identical calculating of single focal lense.In addition, be to use with near to obtain with the identical calculating of single focal lense with far point FP, the near point NP of portion with intermediate point MP closely.
In addition, the method for solving of each above-mentioned intermediate point MP is an example, in the mensuration of the adding number of degrees that utilize cross grid sighting target, on the experience to use 1/2 of adjusting power.Because not making the intermediate point MP of eyestrain can be target to regulate 1/3～2/3 of power, so can also obtain with following formula.Near point is made as NP, adjusting power is made as NPA, be made as the adjusting power NPA (value between preferred 1/3～2/3) that only uses certain ratio Δ X and not make eyestrain, obtain by following formula.
MP＝1/(1/NP-(1-NPA×ΔX))
Perhaps, when using the value of far point FP, obtain (progressive lenses of nearly usefulness still,, the progressive lenses of usefulness except) recently by following formula.
MP＝1/(1/FP+NPA×ΔX)
Following such demonstration of each figure of obtaining by computing as described above.In addition, each photopic vision district figure for Fig. 6, right eye number of degrees when two are corrected fully are made as spherical degree S=-1.00D, astigmatism degree C=-0.75D, astigmatism axle A=5 degree, add number of degrees ADD=+2.00D, each number of degrees of prescription are made as spherical degree S=-0.75D, astigmatism degree C=-0.50D, astigmatism axle A=5 degree, add number of degrees ADD=+1.75D, and adjusting power is made as NPA=0.88D, and calculates.In addition, operation distance W D is made as 40cm.
In the photopic vision district of bore hole figure 102, show with different display modes, to identify the regional 102b of intermediate point MP to the regional 102a of far point FP and intermediate point MP near point NP distinctively.In this example, intermediate point MP represents with blueness that to the regional 102a of far point FP intermediate point MP represents with yellow to the regional 102b of near point NP.Intermediate point MP means half that uses adjusting power and the scope of observing to the regional 102a of far point FP not tiredly, and intermediate point MP means the scope of using adjusting power over half to observe to the regional 102b of near point NP.And then, in regional 102a, demonstrate happy emoticon 120a, in regional 102b, show grimace symbol 120b.By such differentiation the demonstration of regional 102a and regional 102b, the examiner can make the examinee illustrate that the scope that eyestrain ground is observed is to demonstrate the intermediate point MP of blue and symbol 120a to the regional 102a of far point FP with visually understanding easily, and intermediate point MP is the eyes zones of fatigue easily to the regional 102b of near point NP.
At this, Fig. 6 has selected the example of the single focal lense of usefulness far away by " far away single " key 113.When selecting the single focal lense of usefulness far away, its photopic vision district figure 103 is identical with the photopic vision district figure 102 of bore hole, and intermediate point MP represents with blueness that to the regional 103a of far point FP intermediate point MP represents with yellow to the regional 103b of far point NP.And then, show emoticon 120a, 120b among regional 103a and the 103b respectively.For photopic vision district figure 104,105,106 of unselected other correcting lens etc., represent zone in its figure with Lycoperdon polymorphum Vitt, to distinguish clearly with selected correcting lens.
In addition, when selecting the single focal lense of usefulness far away, the regional diagram 140 in the zone 130 in the left side of picture 100 is shown as reflecting the range direction observed by the single focal lense of usefulness far away and the diagram of field range.In the single focal lense of usefulness far away, has the characteristic that in wide to a certain degree field range, to observe a distant place usually, so regional graphics 140 are constituted as this characteristic of reflection.For the demonstration of the range direction of regional diagram 140, can also with figure 103 accordingly, show according to the operation result of near point NP and far point MP.
When for correcting lens relatively, and pass through " near single " when key 114 is selected the single focal lense of nearly usefulness, the photopic vision district checks picture 100 to be switched to the demonstration of Fig. 7.The photopic vision district figure 104 of the single focal lense of nearly usefulness and the photopic vision district figure 102 of bore hole similarly, intermediate point MP represents with blueness that to the regional 104a of far point FP intermediate point MP represents with yellow to the regional 104b of near point NP.In addition, in the position of near point NP and intermediate point MP, show the distance that calculates by above-mentioned operation method with numerical value.In regional 104a and 104b, show emoticon 120a, 120b respectively.
In addition, the single focal lense of nearly usefulness has wideer scope usually on hand.Therefore, the regional diagram 140 in the zone 130 in left side is shown as having the diagram of wide cut degree, with the single focal lense of using far away with respect to Fig. 6, reflects wideer field range on hand.On the other hand, in the single focal lense of nearly usefulness, because the photopic vision district of range direction is shorter, thus be shown as having the diagram of the length up to about 50cm nearby, short with the photopic vision district of reflection range direction.For the length in the photopic vision district of range direction, also can with figure 104 similarly, represent according to the operation result of near point NP and far point FP.
When for correcting lens relatively, and when pass through " distance " key 115 and selecting the progressive lenses of far and near usefulness, the photopic vision district checks picture 100 to be switched to the demonstration of Fig. 8.In photopic vision district figure 105, intermediate point MP represents with blueness that to the regional 105a of far point FP intermediate point MP represents with yellow to the regional 105b of near point NP.In each zone, show emoticon 120a and 120b.In addition, the distance of representing intermediate point MP and near point NP with numerical value.In the progressive lenses of distance, be usually located at far with portion with closely use the amplitude of the progressive band portion between the portion narrow, far the field range of usefulness portion is wider than the field range of nearly usefulness portion.Regional diagram 140 in the left field 130 is in order to reflect the field-of-view characteristics of the progressive lenses that this is far and near, and nearly side is compared extensively in a distant place and the diagram of the field range that central part attenuates and be shown as having.For the range direction of regional diagram 140, in order to reflect from a distant place to the characteristic that closely can enough guarantee the progressive lenses in photopic vision district, and the diagram that is shown as having the length from nearly side to a distant place.
By utilize the demonstration in the such photopic vision district of such Fig. 6～Fig. 8, the observing effect when visually illustrating by each correcting lens understandablely.That is, the examiner is by display graphics 102, can be to hypermetropia when the bore hole only to about the 80cm and the situation that does not also see Chu on hand describes.In the vision in order to ensure a distant place, and used under the situation of single focal lense of usefulness far away, by the figure 105 of displayed map 6, though can illustrate that hypermetropia improves, myopia is than bore hole poor shortcoming also.On the other hand, under the situation of the single focal lense that has used nearly usefulness, figure 104 and diagram demonstration 140 by displayed map 7 can illustrate the situation of improving myopia.And, in this case, by figure 103 and figure 104 are compared observation, can illustrate between the far point in the photopic vision district that the near point in the photopic vision district that the single focal lense by usefulness far away obtains and the single focal lense by nearly usefulness obtain to have the space.And then, in the rectification that the single focal lense by usefulness far away carries out, as shown in Figure 6, by the far point FP of distance that expression do not make eyestrain being shown to the viewing area 103a of the blueness of intermediate point MP, can visually illustrate far away with and each single focal lense of nearly usefulness in look in the middle of being difficult to guarantee.
And, by with respect to the photopic vision district in the single focal lense of the usefulness far away as Fig. 6, Fig. 7 and nearly usefulness, the photopic vision district figure 105 that progressive lenses by distance usefulness obtains is shown, can illustrates if select the progressive lenses of far and near usefulness then can guarantee vision from myopia to the hypermetropia well.
But in the progressive lenses of distance usefulness, the amplitude of common progressive band portion is narrower, therefore have along with add the number of degrees become big in the middle of the shortcoming that narrows down of the field range of part.Characteristic for the observing effect of the progressive lenses of the distance usefulness with this shortcoming by diagram shown in Figure 8 140 is shown, can describe to the examinee understandablely.
At this, as the environment of examinee's wearing spectacles lens based on office work, and pay attention under the situation about guaranteeing of the vision of nearer at one's side distance (about 60cm), the examiner recommends nearest progressive lenses (cover from the progressive lenses of the myopia to about the 60cm) at one's side to get final product.When specifying nearest progressive lenses by " recently " key 117, the demonstration of picture 100 is switched to as shown in Figure 9.With the situation of other lenses similarly, the intermediate point MP in photopic vision district 107 represents with blueness that to the regional 107a of far point FP intermediate point MP represents with yellow to the regional 107b of near point NP.In addition, the regional diagram 140 of left field 130 is switched to the demonstration of the field-of-view characteristics of the nearest progressive lenses of reflection.For nearest progressive lenses, the zone of usually nearly usefulness portion is regional wideer than usefulness portion far away.For the characteristic of the progressive lenses that is easy to reflect that this is nearest, it is diagram about 60cm that regional diagram 140 is shown as at one's side field range photopic vision district wide and far point.By such demonstration, the examiner can illustrate that the photopic vision district when having worn nearest progressive lenses guarantees, and the field range in photopic vision district can be described understandablely.And, compare by photopic vision district figure 104 and the photopic vision district figure 107 to the single focal lense of nearly usefulness, thereby can illustrate that nearest progressive lenses can guarantee the vision of long distance.
On the other hand, as the environment of examinee's wearing spectacles lens based on indoor, and pay attention under situation about guaranteeing to the vision of the middle distance of 2m at one's side, near progressive lenses got final product during the examiner recommended.When pressing " near " key 116, the demonstration of picture 100 is switched to as shown in figure 10.With the situation of other lenses similarly, the intermediate point MP of photopic vision district figure 106 represents with blueness that to the zone of far point FP intermediate point MP represents with yellow to the zone of near point NP.In addition, left field diagram 140 is switched to the demonstration of the field-of-view characteristics of progressive lenses near in the reflection.For near progressive lenses, usually usefulness portion far away and closely wide a little than the progressive lenses of distance with portion.In addition, if the amplitude of progressive band portion and far and near progressive lenses are compared, then wide a little.Zone diagram 140 is shown as from the wide slightly diagram of field range to about the intermediate distance 2m at one's side, to reflect the characteristic of progressive lenses near in this.By such demonstration, the examiner guarantees in the photopic vision district during near progressive lenses in can illustrating and having worn, and then the characteristic of the field range that near progressive lenses has in can illustrating understandablely.
In addition, when pressing " two-fold " key 118, for the photopic vision district figure 108 of usefulness portion far away and nearly usefulness portion, intermediate point MP represents with blueness that to the zone of far point FP intermediate point MP represents (omitting diagram) to the zone of near point NP with yellow.Photopic vision district 108 is understood as that the form that the figure 103 of the single focal lense of usefulness far away and the figure 104 of the single focal lense of nearly usefulness are added up.In addition, the regional graphics 140 in left side are shown as the diagram with the same field range of the single focal lense of usefulness far away.
In the picture 100 of Fig. 6～shown in Figure 10, when pressing the key 145 that is configured in the upper right side, as shown in figure 11, in the upper right side of picture 100, eject the data list 150 of the rectification number of degrees (S, C, A, ADD and WD) that show right and left eyes.The data list that is arranged on picture 100 by utilization shows the key 145 of usefulness, even do not turn back to mode determination, also can confirm the rectification number of degrees in the execution of photopic vision district display routine.
In addition, when pressing the key 144 that arranges for the rectification number of degrees that change prescription, the data of the rectification number of degrees of prescription are replicated, and can change each data in the data list 150 of Figure 11.The key operation of the mode key group 34 by operating surface board 32 (or by each field of the touch data guide look 150), the data that selection will be changed, if rotary dial knob 36, then in the value of the selected data of step change of regulation.For example, when paying attention to intermediate vision when the examinee wishes far and near progressive lenses, the value that weakens spherical degree S gets final product.In this case, for example, when the amount that only weakens 0.25D at spherical degree S=-0.75D (make S become-0.50D) time, will add the value that number of degrees ADD also changes to the amount that only weakens 0.25D by control part 20.That is, ADD=+1.75D is altered to ADD=+1.50D.And, when the correction degree logarithmic data of prescription is changed, calculate far point FP, near point NP and the intermediate point MP of each correcting lens again by control part 20, also change photopic vision district figure 103,105,106 of each correcting lens shown in Fig. 6,8 etc. etc. according to the value that calculates again.
In addition, for example, when having changed the operation distance W D that the examinee wishes, add number of degrees ADD by control part 20 according to this change distance change.When current operation distance is made as WD1, the adding number of degrees in this operation distance are made as ADD1, after changing operation distance is made as WD2, when the adding number of degrees of following this change are made as ADD2, calculate ADD2 with following formula.
ADD2＝(1/WD2-(1/WD1-ADD1))
And, when WD and ADD are changed, calculating far point FP, near point NP and the intermediate point MP of each correcting lens again by control part 20, the photopic vision district figures 103,104,105,106 of each correcting lens etc. are also changed according to the value that calculates again.
As mentioned above, can in the execution of photopic vision district display routine, change and correct the number of degrees, so even do not turn back to mode determination, also can change the photopic vision district figure of each correcting lens at once, carry out its explanation easily.In addition, by the observing effect of confirming that in advance the examiner wishes, when in the end carrying out falsework inspection (in falsework, putting into the inspection that test lens is confirmed observing effect), can write out a prescription effectively and correct the fine setting of the number of degrees.
When pressing key 145 again, the data list 150 that data change is used is closed, and the data of the rectification number of degrees after changing are stored in the memorizer 24.In addition, the prescription data that shows by key 144 is kept by the former state storage.When turning back to mode determination, can also carry out affirmation, its printout under the prescription data after changing.
In above-mentioned picture 100, when pressing " conscious " key 142, demonstration has obtained the data of correcting the number of degrees fully after two balances in data list 150.In this case, also can need not back mode determination, and confirm to correct fully the number of degrees, so when the change number of degrees, prevent from surpassing the overcorrection of correcting the number of degrees fully easily.
In the above description, the display 21 that utilizes functional unit 1 to possess has shown the diagram of photopic vision district check usefulness, but can also constitute the personal computer that utilizes the market sale with display.Figure 12 is the structure example of personal computer (below, PC 80), and PC 80 comprises display 81, has the input parts 87 such as main body 82, keyboard or mouse of control assembly 84.Control assembly 84 has the storage device that stores photopic vision district display routine.Required data can use input part 87 to import in order to carry out photopic vision district display routine, or also can send input by the data from components of assays 1 via communication line.If aforesaid photopic vision district Presentation Function is installed in PC 80, even then under the situation that components of assays 3 and functional unit 1 are not set, the examiner also can illustrate the observing effect that utilizes the correcting lens that is suitable for the examinee.
Above-mentioned embodiment can carry out various distortion.Below, variation is described.As shown in figure 13, in picture 100, by be provided for showing the rectification number of degrees that utilize the previous eyeglass lens that uses of examinee (below, the preceding glasses rectification number of degrees) " glasses " key 146 in the photopic vision district of the eyes of correcting also can be known the photopic vision zone state of correcting the number of degrees based on examinee's preceding glasses at a glance.Data as preceding glasses are corrected the number of degrees except spherical degree S, astigmatism degree C, astigmatic shaft angle degree A, also comprise the data that add the number of degrees ADD when pro-eyeglass lens power is progressive lenses.Preceding glasses correction degree logarithmic data is measured with known lens meter.The operation of indicating by the input of functional unit 1 with the data of lens meter mensuration is imported into control part 20 via communication cable.In addition, also can be in advance by the mensuration record in the output lens somascopes such as printer, and from input data designated groups key 35, select " glasses " pattern, rotation scale knob 36, thereby the numerical value input that glasses are corrected the number of degrees (S, C, A, ADD) before carrying out.
When the examiner pressed " glasses " key 146, according to preceding glasses correction degree logarithmic data, the photopic vision district 103～108 that is calculated by control part 20 was displayed on right side area 101.By the calculating formula that the inverse of the spherical degree SE of equal value that utilizes (prescription is corrected the number of degrees-correct the fully number of degrees) among Fig. 5 is obtained, the far point FP before correcting the number of degrees and replace prescription to correct the number of degrees obtaining with preceding glasses under the glasses rectification number of degrees.For near point NP, intermediate point MP, also at the calculating formula among Fig. 5 will write out a prescription correct the number of degrees and replace into before glasses correct the number of degrees and obtain.At far away with single focal lense, closely use single focal lense, far and near usefulness progressive lenses, in progressive lenses, the progressive lenses, the type of bifocal lens of usefulness recently of nearly usefulness, calculated by control part 20.The type of the eyeglass lens of examiner by pressing key 113～118 and select to use before the examinee (below, be called preceding glasses), the photopic vision district figure 103～108 before can selecting in the glasses and the examinee is illustrated.
In addition, in the photopic vision district figure 108 when the bifocal lens of Figure 13, show with the position of myopia with photopic vision district figure 108b with photopic vision district figure 108a by the hypermetropia that staggers, identify the observing effect of usefulness portion far away and nearly usefulness portion respectively easily.In addition, in Figure 13, consider display space, and by key 115,116 optionally same position demonstrate far and near usefulness progressive lenses photopic vision district figure 105 and in the photopic vision district figure 106 of progressive lenses of nearly usefulness.When the picture dimension of display 21 is big, also can arrange show press " glasses " key 146 and show correct the photopic vision district figure of the number of degrees based on preceding glasses.
The examiner utilizes the photopic vision district 103～108 under this " glasses " pattern, when having used various lens, can easily switch the observing effect in the preceding glasses of explanation.In addition, show " glasses " pattern and " prescription " pattern by switching, the difference of the observing effect of glasses and current prescription values before the examiner can illustrate easily to the examinee, how the easy understanding of examinee improves observing effect.In addition, what the examiner is illustrated as to the examinee easily and is made as this prescription values reasons such as (for example, when the difference of current glasses and current prescription is big, causing burden), therefore the examinee approved.
In addition, by utilizing the diagram 140 in the zone 130 in left side simultaneously, can recommend to compare with preceding glasses the glasses of each different purpose of observed distance range or visual field range, also a plurality of glasses are held in suggestion easily.
Another variation is described.In the demonstration of the photopic vision district of Fig. 6～Figure 11, Figure 13 figure, correct fully the number of degrees and prescription correct the number of degrees astigmatism degree C poor Δ C more than or equal to certain value (for example, more than or equal to 0.75D) situation under, when the actual observation object, with respect to the situation of having corrected astigmatism degree C, because the remnants of astigmatism degree C are very big, so the observing effect of specific direction is unintelligible.Therefore, on calculating, even in being expressed as the scope in the photopic vision district 102～108 of scope clearly, in fact also contain unsharp part.In addition, under bore hole astigmatism degree C (for example, situation 0.75D) is also identical more than or equal to certain value.Therefore, first display mode of the photopic vision district figure 102～108 with respect to the poor Δ C of astigmatism degree C during less than certain value, the 2nd display mode of the poor Δ C that is made as at astigmatism degree C demonstration tone by changing photopic vision district figure 102～108 during more than or equal to certain value can visually allow the examinee understand the actual clear situation that do not see easily.For example, in the photopic vision district of Fig. 6 figure 102,103, difference Δ C during less than certain value when astigmatic (corrected), by regional 102a, the 103a that will show with blueness with canescent light blue the demonstration, will be with yellow regional 102b, the 103b that shows with canescent yellow the demonstration, can be illustrated in the situation of astigmatism remnants definition generation deterioration of observing effect when very big.Particularly, for the examiner who lacks experience, astigmatism during more than or equal to certain value by automatically changing the display modes such as tone of photopic vision district figure, can more correctly carry out the explanation of observing effect to the examinee.
In addition, the progressive lenses of nearly usefulness in also can following such Fig. 5 of realization, use the computational methods of the far point FP of progressive lenses recently.At first, in the calculating of far point FP of progressive lenses of nearly usefulness, in Fig. 5, be 200cm to the maximum as target, but also can be the calculating same with the progressive lenses of distance usefulness.And then, because in use during the progressive lenses of nearly usefulness, with respect to hypermetropia, the eyespot of sight line reduces a little, so also the calculating of its far point FP can be made as 1/ ((locating-finish) SE+0.25), will correct about the number of degrees 1 grade of reduction (or 2 grades) and calculate.Thus, can to the examinee present with in the corresponding photopic vision district of the actual using method of progressive lenses of nearly usefulness.
For the nearest progressive lenses of using, in Fig. 5, far point FP is fixed as 60cm as target, but is that benchmark uses and reduces the method that adds the number of degrees and calculate far point FP with the rectification number of degrees of nearly usefulness.The calculating of far point FP is made as 1/ (the negative ADD of (locating-finish) SE+ prescription ADD+).The negative ADD of this formula is the minimizing data that add the number of degrees, and these number of degrees are considered the desirable far point of examinee and determined.Below, for the nearest progressive lenses of using, the input for the negative ADD that obtains far point FP is described.
Figure 14 is the example that demonstrates data list 150 when pressing prescription key 144 in the same manner for the rectification number of degrees that change prescription with Figure 11, is to have selected far and near situation with progressive lenses by key 115 simultaneously.In this data list 150, be provided with nearly " far using " pattern and demonstration nearly " the closely using " pattern of using the rectification number of degrees (S, C, A) with the various lens beyond the single focal lense far away of correcting the number of degrees (S, C, A, ADD) of using far away with single focal lense various lens in addition of demonstration, can switch " far away using " pattern and " closely using " pattern by pressing key 151.
Figure 15 is the situation of having selected " near using " pattern.Far adding with the S value (R:-1.75D, L:-2.25D) of the data list 150 under the pattern of showing on Figure 14 added the number of degrees ADD (value (R:-0.75D, the L:-1.25D) of+nearly spherical degree S with the rectification number of degrees that 1.00D) obtains showing in the data list 150 of " near with " pattern.
When under this " near with " pattern, selected recently when use progressive lenses by key 117, below data list 150, demonstrate the key 153 for the negative adding of the input number of degrees.In this example, as the negative number of degrees that add, imported " 1.00D ".The examiner can be by membrane keyboard 153 and one by one with the negative value that adds the number of degrees of regulation amplitude change.For example, when pressing key 153, satisfy time switching 0.5D, so that the negative adding number of degrees become " 1.00D ", " 1.50D ", " 2.00D " is such.In addition, under the state of having selected key 153, can come one by one with the negative number of degrees that add of the amplitude change of regulation by rotation scale knob 36.The negative number of degrees that add also can change with value arbitrarily.When the negative adding number of degrees in the nearest progressive lenses of change, obtain far point FP by above-mentioned computational methods.Then, the display position of the far point FP of photopic vision district figure 107 is changed.Thus, when determining the rectification number of degrees of nearest progressive lenses, can its observing effect be described easily to the examinee.In addition, obtain nearest near point with progressive lenses by calculating shown in Figure 5.When the examiner illustrates observing effect to the examinee, photopic vision district 103～108 all uses regional diagram 140 to regulate the negative value that adds the number of degrees, the nearest progressive lenses that various hope with the examinee approach can be proposed simultaneously, these various hope comprise hope in wideer scope, see well in front of, wish can both clearly to see from the front to a near slightly distant place, wish to obtain not make the prescription of eyestrain degree etc.
In addition, when membrane keyboard 153, data list 150 pictures are closed, display key 153 only on picture.Therefore, by changing the negative position that the number of degrees change far point FP that adds, can prevent that the figure 107 in photopic vision district from being blocked in the data list.
Then, explanation can be adjusted the variation of using when correcting the number of degrees far away of prescription.As described in explanation in Figure 11, by pressing key 144, can change each data in the data list 150.At this, change when excessive the prescription that might carry out overcorrection mistakenly when correcting the number of degrees.By to after changing the number of degrees be used for judging that the predetermined benchmark of overcorrection judges, and judge whether to be overcorrection.In near-sighted system (spherical degree S for negative the number of degrees), far away from correcting the number of degrees when correcting the number of degrees fully at prescription is judged as overcorrection.In hypermetropia system (spherical degree S is the positive number of degrees), spherical degree S surpasses 0 and from just becoming when negative, be judged as overcorrection.In addition, also surpass when correcting the number of degrees fully at astigmatism degree C, be judged as overcorrection.Far away when being judged as overcorrection with the rectification number of degrees at prescription, the display mode of photopic vision district figure 102～108 is changed.For example, the common indigo plant when being not overcorrection, yellow, Lycoperdon polymorphum Vitt etc. are changed to the redness that warning is the meaning of overcorrection.Like this, by in the time will becoming the prescription of overcorrection, showing warning, can prevent possibly that the examiner from the lens of the wrong number of degrees mistake as prescription, can provide the lens of the comfortable number of degrees more accurately to the examinee.
Claims (7)
1. ophthalmic unit that checks the focal power of examinee's eye is characterized in that possessing:
Data obtain the unit, obtain best polarization number when comprising the highest vision that obtains examinee's eye far away with correct the number of degrees far away with complete correction degree number, at the complete correction degree number of the usefulness far away of examinee's eye with spherical degree, astigmatism degree weaken the adding number of degrees ADD with prescription correction degree number, examinee's eye far away after the adjustment, based on sighting target do not blur and examinee's eye can visuognosis the minimum range anomalistic distance or the data of the adjusting power of examinee's eye of the operation distance during adding number of degrees ADD mensuration;
Arithmetic element, according to obtained data, obtain utilize far away with single focal lense, the near photopic vision district of the examinee's eye after correcting with at least a lens in single focal lense and the progressive lenses; And
Display unit, picture illustrate with examinee be basic point and regulation near with distance, regulation far with apart from and the 1st diagram of having disposed the appearance of object respectively of regulation intermediate distance, the 2nd diagram in the photopic vision district of the examinee's eye after obtaining above-mentioned rectification by arithmetic element picture illustrate.
2. ophthalmic unit according to claim 1 is characterized in that,
Arithmetic element is far away with single focal lense, closely the far point of the examinee's eye after proofreading and correct with single focal lense and progressive lenses and near point are obtained the unit in the photopic vision district of the examinee's eye after the above-mentioned rectification according to utilizing,
Obtain by the far point with the examinee's eye after the single focal lense rectification far away according to the complete correction degree number of usefulness far away and the difference with prescription correction degree number far away, make every effort to by the near point with the examinee's eye after the single focal lense rectification far away according to the complete correction degree number of usefulness far away and the difference with prescription correction degree number far away and adjusting
According to the complete correction degree number of usefulness far away and difference with prescription correction degree number far away and add number of degrees ADD and obtain by closely with the far point of the examinee's eye after the single focal lense rectification, according to the complete correction degree number of usefulness far away with far away with prescription correction degree number poor, add number of degrees ADD and adjusting and make every effort to by closely with the near point of the examinee's eye after the single focal lense rectification
Obtain the far point of the examinee's eye after being corrected by progressive lenses according to the complete correction degree number of usefulness far away and difference with prescription correction degree number far away, make every effort near point by the examinee's eye after the progressive lenses rectification according to the complete correction degree number of usefulness far away and poor, the adding number of degrees ADD with prescription correction degree number far away and adjusting.
3. ophthalmic unit according to claim 2 is characterized in that,
Arithmetic element is to the adjusting power of the adjusting power usage rate Δ X that do not make the asthenopic examinee's eye of examinee, adjusting power according to far point or near point and ratio Δ X, obtain respectively based on the single focal lense of using far away, the intermediate point in the photopic vision district of the examinee's eye after the rectification of nearly usefulness single focal lense and progressive lenses, perhaps basis is far with complete correction degree number, adjusting power with prescription correction degree number and ratio Δ X far away is obtained the intermediate point based on the photopic vision district of the examinee's eye after the usefulness far away above-mentioned rectification of single focal lense, and obtain intermediate point based on nearly photopic vision district with the examinee's eye after the above-mentioned rectification of single focal lense and progressive lenses respectively according to operation distance
Display unit further shows that the far point of distinguishing from each lens of obtaining based on above-mentioned arithmetic element is to the 1st zone of intermediate point and the diagram in the 2nd zone from the intermediate point to the near point in the 2nd diagram separately of above-mentioned each lens.
4. ophthalmic unit according to claim 1 is characterized in that, also possesses:
Input is used for the selected cell of the selection signal of selection lens; And
Store the memory element of characteristic of the field range of each lens,
Display unit accesses the field range characteristic of lens according to the selection signal by selected cell input from memory element, and also shows the diagram of the two-dimentional range with field range characteristic that reflection accesses in the 1st diagram.
5. ophthalmic unit according to claim 1 is characterized in that, also comprises:
The change unit, will comprise the complete correction degree number of usefulness far away, far away with prescription correction degree number, add number of degrees ADD and operation distance each data show to the picture of display unit, and input is used for change signal that each shown data are changed,
Arithmetic element is according to the photopic vision district that is obtained the examinee's eye after the above-mentioned rectification by change unit data after changing again.
6. ophthalmic unit according to claim 1 is characterized in that,
Far all comprising spherical degree and astigmatism degree with complete correction degree number and in far with prescription correction degree number,
Display unit is at the poor Δ C of astigmatism degree with complete correction degree number far away and the astigmatism degree with the correction degree number of writing out a prescription far away during less than setting, show the 2nd diagram by the 1st display mode, at difference Δ C during more than or equal to setting, the 2nd display mode of the situation of the definition generation deterioration in the photopic vision district by the examinee's eye after the above-mentioned rectification is shown shows the 2nd diagram.
7. ophthalmic unit according to claim 1 is characterized in that, also comprises:
Input block, the use lens of the glasses that use before the input examinee are namely far away with single focal lense, closely use at least one the rectification number of degrees of use lens in single focal lense and the progressive lenses,
Arithmetic element according to far away with complete correction degree number, obtain photopic vision district by the examinee's eye after the above-mentioned use lens rectification by the rectification number of degrees of the above-mentioned use lens of input block input,
Display unit illustrates the 2nd diagram by the photopic vision district of the examinee's eye after the above-mentioned use lens rectification.
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| JP2007-256505 | 2007-09-28 | ||
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| JP2008028983A JP5073521B2 (en) | 2007-09-28 | 2008-02-08 | Optometry equipment |
| JP2008-028983 | 2008-02-08 |
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Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102009004866B4 (en) * | 2009-01-16 | 2010-11-04 | Carl Zeiss Vision Gmbh | Method and device for determining the individually required addition of a visual aid |
| JP5897285B2 (en) * | 2011-09-02 | 2016-03-30 | イーエイチエス レンズ フィリピン インク | Progressive power lens selection device, progressive power lens selection method, and progressive power lens selection program |
| WO2014007216A1 (en) * | 2012-07-04 | 2014-01-09 | 株式会社ニデック | Optometry device controller, optometry system, and storage medium which stores optometry device prgoram |
| JP6057055B2 (en) * | 2012-07-31 | 2017-01-11 | 株式会社ニデック | Optometry equipment |
| EP2899585A4 (en) * | 2012-09-19 | 2016-05-18 | Nikon Corp | Line of sight detection device, display method, line of sight detection device calibration method, spectacle lens design method, spectacle lens selection method, spectacle lens manufacturing method, printed matter, spectacle lens sales method, optical device, line of sight information detection method, optical instrument design method, optical instrument, optical instrument selection method, and optical instrument production method |
| JP6273444B2 (en) * | 2012-12-12 | 2018-02-07 | 東海光学株式会社 | Visual distance calculation method for eyeglass lens, visual distance display device, and evaluation method for eyeglass lens |
| CN105009124B (en) | 2013-02-06 | 2018-01-19 | Hoya株式会社 | Analogue system, simulator and description of commodity householder method |
| CN105764405B (en) * | 2013-06-06 | 2018-12-18 | 6超越6视觉有限公司 | Based on the not positive system and method for subjective distance measuring measurement ophthalmic refractive |
| JP6284553B2 (en) * | 2013-12-26 | 2018-02-28 | ホヤ レンズ タイランド リミテッドＨＯＹＡ Ｌｅｎｓ Ｔｈａｉｌａｎｄ Ｌｔｄ | Method, program and apparatus for manufacturing progressive-power lens, method for manufacturing progressive-power lens, and lens supply system |
| KR101525352B1 (en) * | 2014-04-25 | 2015-06-03 | 한정우 | Retinoscope |
| US9581835B2 (en) * | 2014-05-30 | 2017-02-28 | Johnson & Johnson Vision Care, Inc. | Patient interactive fit tool and methodology for contact lens fitting |
| JP6497005B2 (en) * | 2014-09-05 | 2019-04-10 | 株式会社ニデック | Visual function measuring device and visual function measuring program |
| JP6828234B2 (en) * | 2015-12-01 | 2021-02-10 | 株式会社ニデック | Optometry information display device, optometry information display program |
| JP6753123B2 (en) * | 2016-04-12 | 2020-09-09 | 株式会社ニデック | Controller for subjective optometry device and subjective optometry device |
| JP2017198806A (en) * | 2016-04-26 | 2017-11-02 | 株式会社Ｋｐｄソリューションズ | Clear vision display device, clear vision display method and clear vision display program |
| CN106137116B (en) * | 2016-08-26 | 2018-05-25 | 四川远瞻智汇科技有限公司 | A kind of vision testing method and device |
| EP3295863B1 (en) | 2016-09-15 | 2023-04-19 | Essilor International | Measurement method for determining a value of a visual correction need for near vision of an individual in a natural posture for near vision |
| KR102570410B1 (en) * | 2017-05-12 | 2023-08-24 | 에씰로 앙터나시오날 | Method for Determining Specific Near Viewing Magnification of Ophthalmic Lenses |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546142A (en) * | 1993-10-04 | 1996-08-13 | Kabushiki Kaisha Topcon | Method and apparatus of optometry |
| CN1690679A (en) * | 2004-04-27 | 2005-11-02 | 株式会社尼德克 | Lens meter |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63135127A (en) * | 1986-11-27 | 1988-06-07 | リコーエレメックス株式会社 | Regulation force meter for vdt work |
| JP2846633B2 (en) * | 1987-09-10 | 1999-01-13 | 株式会社ニデック | Refractive power inspection device |
| JP3195812B2 (en) * | 1991-12-27 | 2001-08-06 | ホーヤ株式会社 | Subjective optometry device |
| JPH0663013A (en) * | 1993-07-19 | 1994-03-08 | Topcon Corp | Ophthalmic device |
| JP3580928B2 (en) * | 1995-12-28 | 2004-10-27 | 株式会社ニデック | Ophthalmic equipment |
| JP4739795B2 (en) * | 2005-03-31 | 2011-08-03 | 株式会社ニデック | Eye refractive power measuring device |
| JP4804096B2 (en) * | 2005-10-11 | 2011-10-26 | セイコーオプティカルプロダクツ株式会社 | Glasses lens clear viewing area display method, glasses lens clear viewing area display device, and recording medium storing glasses lens clear viewing area display program |
-
2008
- 2008-02-08 JP JP2008028983A patent/JP5073521B2/en active Active
- 2008-09-25 CN CN2008101662901A patent/CN101396259B/en active Active
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5546142A (en) * | 1993-10-04 | 1996-08-13 | Kabushiki Kaisha Topcon | Method and apparatus of optometry |
| CN1690679A (en) * | 2004-04-27 | 2005-11-02 | 株式会社尼德克 | Lens meter |
Non-Patent Citations (2)
| Title |
|---|
| JP特开平8-266467A 1996.10.15 |
| JP特开平9-182722A 1997.07.15 |
Also Published As
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| JP2009095635A (en) | 2009-05-07 |
| JP5073521B2 (en) | 2012-11-14 |
| KR101474021B1 (en) | 2014-12-24 |
| KR20090033122A (en) | 2009-04-01 |
| CN101396259A (en) | 2009-04-01 |
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