CN103767671B - Bi-color axial position astigmatic chart - Google Patents
Bi-color axial position astigmatic chart Download PDFInfo
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- CN103767671B CN103767671B CN201410047800.9A CN201410047800A CN103767671B CN 103767671 B CN103767671 B CN 103767671B CN 201410047800 A CN201410047800 A CN 201410047800A CN 103767671 B CN103767671 B CN 103767671B
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- astigmatism
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- 201000009310 astigmatism Diseases 0.000 abstract description 30
- 238000000034 method Methods 0.000 abstract description 8
- 230000004438 eyesight Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 206010034960 Photophobia Diseases 0.000 description 2
- 230000004075 alteration Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 208000013469 light sensitivity Diseases 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 208000014733 refractive error Diseases 0.000 description 2
- 241000256844 Apis mellifera Species 0.000 description 1
- 206010010356 Congenital anomaly Diseases 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 208000029091 Refraction disease Diseases 0.000 description 1
- 230000004430 ametropia Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
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- Eye Examination Apparatus (AREA)
Abstract
The invention discloses a bi-color axial position astigmatic chart and an astigmatism checking method adopting the same, which can be used for detecting astigmatism diopter and the axial position of astigmatism quickly, effectively and accurately.
Description
Technical field
The present invention relates to optometry field, what particularly relate to double-colored axle position astigmatic chart and use this double-colored axle position astigmatic chart tests astigmatic method.
Background technology
In existing optometry process, use the red green sighting target determination concave-sphere number of degrees, the direction of the axle position using conventional astigmatic table to determine and astigmatism degree, but the astigmatism degree measured like this and axle position are outlines, very accurate, and the method applying red green sighting target and conventional astigmatic table mensuration astigmatism degree and axle position has its limitation, especially when astigmatism degree is close with myopia degree, obtain good result with this method is more difficult, and can not determine and measure astigmatism accurately, more easily cause error.
Summary of the invention
The object of the invention is: what provide a kind of double-colored axle position astigmatic chart and use this double-colored axle position astigmatic chart tests astigmatic method, astigmatism degree and axis of astigmatism can be detected fast, effectively, accurately.
To achieve these goals, technical scheme of the present invention is:
The double-colored method testing astigmatism, comprises the following steps:
Step one, plugs the spherocylindrical lens of optometry data at trial frame, and carries out mist and look, to vision about 0.3;
Step 2, removes post mirrors all on trial frame;
Step 3, progressively increases negative concave-sphere or the normal position of spherical lens that successively decreases, makes vision to 0.6;
Step 4, throws in astigmatism dish, if those who are investigated think that the svelteness degree of all directions is all similar, then the optometry of astigmatism dish terminates, and those who are investigated do not detect astigmatism; If those who are investigated think that definition is variant, then determine which bar lines is the most clear, and record the direction of lines the most clearly;
Step 5, uses red green axle position astigmatic chart, and the green line of red green axle position astigmatic chart is aimed at the direction of above-mentioned lines the most clearly.
Step 6, if those who are investigated think that the clear degree of red line on above-mentioned green line both sides is all similar, then surveys axis of astigmatism and terminates; If those who are investigated think that definition is variant, then confirm which the bar red line in the red line of both sides is clear, past red line direction clearly rotates astigmatic chart 0 to 10 and spends;
Step 7, repeats six steps again, until those who are investigated think that two red line definitions are all similar, surveys axis of astigmatism and terminates;
Step 8, uses the vertical astigmatism dish of red green axle, by green line bar shaft alignment step 5 medium green lines axle position;
Step 9, suppose that those who are investigated think that green and red line definition are all similar, then examinee's astigmatism is-0.50D; If those who are investigated think that definition is variant, at the axially strutting mirror that green line is vertical, until green the same with red line clear, then examinee's mean of cylindrical diopter is, adds-0.50D at actual post mirror.
A kind of double-colored axle position astigmatic chart, comprises red line and green line that angle is 5 degree ~ 90 degree.
The present invention is owing to have employed above-mentioned technology, and the good effect making it compared with prior art to have is: the present invention carries out optometry by using the double-colored axle position astigmatic chart with red line and green line, can detect astigmatism degree and axis of astigmatism fast, effectively, accurately.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention double-colored axle position astigmatic chart.
Fig. 2 is the structural representation of the double-colored vertical astigmatic chart of the present invention.
Detailed description of the invention
Embodiments of the invention are further illustrated below in conjunction with accompanying drawing.
Refer to shown in Fig. 1 and Fig. 2, a kind of double-colored method testing astigmatism, comprises the following steps:
Step one, plugs the spherocylindrical lens of optometry data at trial frame, and carries out mist and look, to vision about 0.3;
Step 2, removes post mirrors all on trial frame;
Step 3, progressively increases negative concave-sphere or the normal position of spherical lens that successively decreases, makes vision to 0.6;
Step 4, throws in astigmatism dish, if those who are investigated think that the svelteness degree of all directions is all similar, then the optometry of astigmatism dish terminates, and those who are investigated do not detect astigmatism; If those who are investigated think that definition is variant, then determine which bar lines is the most clear, and record the direction of lines the most clearly;
Step 5, uses red green axle position astigmatic chart, and the green line of red green axle position astigmatic chart is aimed at the direction of above-mentioned lines the most clearly.
Step 6, if those who are investigated think that the clear degree of red line on above-mentioned green line both sides is all similar, then surveys axis of astigmatism and terminates; If those who are investigated think that definition is variant, then confirm which the bar red line in the red line of both sides is clear, past red line direction clearly rotates astigmatic chart 0 to 10 and spends;
Step 7, repeats six steps again, until those who are investigated think that two red line definitions are all similar, surveys axis of astigmatism and terminates;
Step 8, uses the vertical astigmatism dish of red green axle, by green line bar shaft alignment step 5 medium green lines axle position;
Step 9, suppose that those who are investigated think that green and red line definition are all similar, then examinee's astigmatism is-0.50D; If those who are investigated think that definition is variant, at the axially strutting mirror that green line is vertical, until green the same with red line clear, then examinee's mean of cylindrical diopter is, adds-0.50D at actual post mirror.
Double-colored axle position astigmatic chart, comprises red line and green line that angle is 5 degree ~ 90 degree.
Generally, because eyes are congenital have color sensitivity, strong to the light sensitivitys of sodium yellow, to red, blue light light sensitivitys is poor, gold-tinted the brightest in such spectrum formed on the retina very clearly as, and by color of light that is longer or shorter wavelength, then only form the ring of light comparatively do not worked, so be easily left in the basket, also just make chromatic aberration obtain and make up to a certain extent.Though but suffer from ametropia when human eye or correct but do not reach appropriateness, then wear with red, green len or watch red green different sighting target attentively, the chromatic aberration of human eye just will inevitably make patient feel the difference of red, green sighting target definition.This is bichrome refraction ratio juris just also.But it is to be noted here: application red green filter disc, its red filter disc transmitance peak value is when 620nm, dioptric colour difference is+0.24D, green filter disc transmitance honeybee value is when 535nm, colour difference is-0.21D, so time total colour difference be about 0.50D, effective correction of refractive errors scope that bichrome refraction is corresponding is 0.50D, therefore should be increased to optimum by correcting defects of vision before bichrome refraction as far as possible.
In sum, the present invention double-colored axle position astigmatic chart can detect astigmatism degree and axis of astigmatism fast, effectively, accurately.
Claims (1)
1. a double-colored axle position astigmatic chart, is characterized in that: comprise crossing green line and red line; Described green line is one, and red line is two; Described green line and two red lines intersect at a point; Described two red lines are symmetrical relative to described green line; The angle of described two red lines and green line is 5 degree ~ 90 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410047800.9A CN103767671B (en) | 2014-02-11 | 2014-02-11 | Bi-color axial position astigmatic chart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410047800.9A CN103767671B (en) | 2014-02-11 | 2014-02-11 | Bi-color axial position astigmatic chart |
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| Publication Number | Publication Date |
|---|---|
| CN103767671A CN103767671A (en) | 2014-05-07 |
| CN103767671B true CN103767671B (en) | 2015-07-01 |
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| CN201410047800.9A Active CN103767671B (en) | 2014-02-11 | 2014-02-11 | Bi-color axial position astigmatic chart |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105342550A (en) * | 2015-09-29 | 2016-02-24 | 张仕郎 | Electronic astigmatic chart and method for measuring astigmatism focal power |
| CN106901685B (en) * | 2017-03-06 | 2019-01-22 | 云视野（北京）科技有限公司 | A kind of method, apparatus and electronic equipment obtaining diopter |
| CN109744995A (en) * | 2019-01-30 | 2019-05-14 | 鲁国耀 | A kind of visual chart and prevented the optometry method rectified |
| CN111281328B (en) * | 2020-02-27 | 2022-08-12 | 南京云视郎生物科技有限公司 | Amblyopia optometry method and device and electronic equipment |
| CN115590459B (en) * | 2022-10-25 | 2023-07-07 | 江苏鸿晨集团有限公司 | High-precision light diffusion plate |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106595U (en) * | 1991-11-26 | 1992-06-10 | 李观富 | Multi-functional instrument for examining the eyes |
| US5997142A (en) * | 1996-12-24 | 1999-12-07 | Nakagawa; Akio | Eye test method using red and green marks and red/green tester used in the eye test method |
| CN1297713A (en) * | 1999-11-25 | 2001-06-06 | 邓可立 | Ametropia correcting method and equipment |
| JP2007267822A (en) * | 2006-03-30 | 2007-10-18 | Topcon Corp | Subjective optometer |
| CN201275058Y (en) * | 2008-09-02 | 2009-07-22 | 闵国光 | Multifunctional lamp box for examining diopter |
| CN201602753U (en) * | 2010-01-08 | 2010-10-13 | 曹季 | Astigmatic chart combined optometry light box |
-
2014
- 2014-02-11 CN CN201410047800.9A patent/CN103767671B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2106595U (en) * | 1991-11-26 | 1992-06-10 | 李观富 | Multi-functional instrument for examining the eyes |
| US5997142A (en) * | 1996-12-24 | 1999-12-07 | Nakagawa; Akio | Eye test method using red and green marks and red/green tester used in the eye test method |
| CN1297713A (en) * | 1999-11-25 | 2001-06-06 | 邓可立 | Ametropia correcting method and equipment |
| JP2007267822A (en) * | 2006-03-30 | 2007-10-18 | Topcon Corp | Subjective optometer |
| CN201275058Y (en) * | 2008-09-02 | 2009-07-22 | 闵国光 | Multifunctional lamp box for examining diopter |
| CN201602753U (en) * | 2010-01-08 | 2010-10-13 | 曹季 | Astigmatic chart combined optometry light box |
Non-Patent Citations (1)
| Title |
|---|
| 散光眼的视觉分析和利用散光表视标检查散光;姚进;《中国眼镜科学杂志》;20071130(第11期);第44-45页 * |
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| CN103767671A (en) | 2014-05-07 |
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Effective date of registration: 20151113 Address after: 100081, A, building 1, building 48, No. 3 West Third Ring Road, Haidian District, Beijing, 24E Patentee after: Cloud View (Beijing) Technology Co., Ltd. Address before: 564799 Zhang Xiaohua clinic, two floor, Lotus Pond, Chishui, Guizhou, Zunyi Patentee before: Zhang Shilang |