CN103431836A - Watching sighting mark and method for using same - Google Patents
Watching sighting mark and method for using same Download PDFInfo
- Publication number
- CN103431836A CN103431836A CN2013103935069A CN201310393506A CN103431836A CN 103431836 A CN103431836 A CN 103431836A CN 2013103935069 A CN2013103935069 A CN 2013103935069A CN 201310393506 A CN201310393506 A CN 201310393506A CN 103431836 A CN103431836 A CN 103431836A
- Authority
- CN
- China
- Prior art keywords
- sighting target
- point source
- watching
- attentively
- cylindrical body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000005259 measurement Methods 0.000 abstract description 18
- 238000007689 inspection Methods 0.000 abstract 1
- 206010025421 Macule Diseases 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 230000004323 axial length Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 210000005252 bulbus oculi Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 241000375392 Tana Species 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 210000001525 retina Anatomy 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000001356 surgical procedure Methods 0.000 description 1
Images
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
The invention relates to the field of measurement or inspection in the ophthalmology department, and in particular relates to a watching sighting mark and a method for using the same. The watching sighting mark comprises a spot light source and a cylinder body, wherein the spot light source is arranged at one end of the cylinder body, and the other end of the cylinder body is opened. The method for using the watching sighting mark is that the sight of a person to be inspected is guided by the cylinder body to focus on the spot light source inside the cylinder body. According to the watching sighting mark and the method for using the same, the person to be inspected can see the spot light source at one closed end from the other opening end of the cylinder body, namely, the watching axis of the person to be inspected is compulsorily positioned inside the cylinder body, so that the person to be inspected indeed watches the sighting mark rather than seeing the sighting mark when reporting the situation of watching the sighting mark, and the deviation of a measurement result is small.
Description
Technical field
The present invention relates to measurement or the detection field of ophthalmology, in particular to the using method of watching sighting target attentively and watching sighting target attentively.
Background technology
Watching sighting target attentively, is a kind of device for ophthalmic measurement or detection.Be generally used for the detected person is carried out to the measurement of axis oculi, the measurement of slant visibility, the measurement at angle, room or the measurement at artificial intraocular lenses inclination angle.
In correlation technique, usually adopt the red point source that continues bright or flicker as watching sighting target attentively, when carrying out ophthalmic measurement or detecting, whether the tester can require the detected person watch sighting target attentively and answer and watch attentively, and whether detected person's report is watched attentively.
When doing ophthalmic measurement or detecting, as shown in Figure 1, using point source 1 as sighting target due to correlation technique, when the detected person sees to point source, the line on point source 1 and retina between imaging point is fixation axis 3; When point source 1 falls into optical fundus central fovea of macula 5, the optical fundus central fovea of macula 5 of take is normal line 2 with the line of point source 1; When point source 1 falls into optical fundus central fovea of macula 5, fixation axis 3 overlaps with normal line 2, now, meets the detected person who medically assert and " watches " sighting target attentively; When point source 1 falls into optical fundus central fovea of macula periphery 4, when fixation axis 3 forms an angle with normal line 2, the detected person " sees " point source, does not meet the detected person who medically assert and " watches " sighting target attentively.But the detected person not necessarily knows the difference of " seeing " and " watching attentively ", during report " watching attentively " point source 1, be likely " seeing " point source 1, thereby make measuring result error larger.
Summary of the invention
The object of the present invention is to provide the using method of watching sighting target attentively and watching sighting target attentively, to solve the above problems.
Provide in an embodiment of the present invention and watched sighting target attentively, having comprised: point source and cylindrical body;
Described point source is located at an end of described cylindrical body; The other end opening of described cylindrical body.
The above embodiment of the present invention watch sighting target attentively, by cylindrical body is set, detected person's sight line need to just can be seen the point source of the other end that is positioned at sealing by an end of cylindrical body opening, also make detected person's fixation axis be forced to be positioned at the inside of cylindrical body, thereby the detected person is reported while watching sighting target attentively, really be " watching attentively " sighting target but not " seeing " sighting target, thereby make the measurement result deviation less.
A kind of using method of watching sighting target attentively as described as above-mentioned embodiment also is provided in an embodiment of the present invention, and described cylindrical body guiding detected person's sight line is gathered in the inside of described cylindrical body and is seen point source.
The using method of watching sighting target attentively of the above embodiment of the present invention, by cylindrical body is set, detected person's sight line need to just can be seen the point source of the other end that is positioned at sealing by an end of cylindrical body opening, also make detected person's fixation axis be forced to be positioned at the inside of cylindrical body, thereby the detected person is reported while watching sighting target attentively, really be " watching attentively " sighting target but not " seeing " sighting target, thereby make the measurement result deviation less.
The accompanying drawing explanation
Fig. 1 shows in correlation technique the schematic diagram of watching sighting target attentively;
Fig. 2 shows the sighting target schematic diagram in use of watching attentively of the present invention;
The schematic diagram of axiallength Lc and the angle of true axiallength L in the measurement error allowed when Fig. 3 shows the artificial intraocular lenses and measures;
The lenth ratio that Fig. 4 shows the width of the point source of watching sighting target attentively of the present invention and cylindrical body equals the schematic diagram of tan α.
The 1-point source; The 2-normal line; The 3-fixation axis; 4-optical fundus central fovea of macula periphery; 5-optical fundus central fovea of macula; The 6-cylindrical body.
The specific embodiment
Below by specific embodiment, also by reference to the accompanying drawings the present invention is described in further detail.
Watch sighting target attentively, as shown in Figure 2, comprising: point source 1 and cylindrical body 6; Point source 1 is located at an end of cylindrical body 6; The other end opening of cylindrical body 6.
The above embodiment of the present invention watch sighting target attentively, by cylindrical body 6 is set, detected person's sight line need to just can be seen by an end of cylindrical body 6 openings the point source 1 of the other end that is positioned at sealing, be also, make detected person's fixation axis 3 be forced to be positioned at the inside of cylindrical body 6, thereby the detected person is reported while watching sighting target attentively, be " watching attentively " sighting target but not " seeing " sighting target really, thereby make the measurement result deviation less.
Preferably, above-mentioned, watch sighting target attentively, the ratio of the length of the width of point source 1 and cylindrical body 6 is less than tan7.4 °.
Wherein, the source of tan7.4 ° is: the SRKII formula (known) of measuring according to the artificial intraocular lenses:
Being less than 0.5D(D due to the deviation of the P of successful surgery is the dioptric Diopter of unit), so, the deviation of axis oculi L should be less than 0.2, thereby, as shown in Figure 3, following formula has just been arranged:
Dx wherein (Dx >=0) is operating distance (light source to corneal vertex), and Lc is for measuring the axiallength of gained, and the angle of deviation produced while watching attentively is α, and W is measurement point on the wall of eyeball deflection distance apart from axis oculi.
From above-mentioned formula, Dx is larger, and corresponding skew angle is less.This just means, cursor is far away apart from eyeball, and the angle of deviation of permission is less.Take the normal adult axis oculi as 24mm, Dx gets 0～+ ∞ mm, α is at 7.4 °～0 °.
The ratio of the width by set-point light source 1 and the length of cylindrical body 6 is less than tan7.4 °, when detected person's sight line is seen the point source 1 of the other end that is positioned at sealing by an end of cylindrical body 6 openings, be also the inside that detected person's fixation axis 3 is forced to be positioned at cylindrical body 6, thereby the detected person is reported while watching sighting target attentively, really be " watching attentively " sighting target but not " seeing " sighting target, thereby make the measurement result deviation less
Preferably, above-mentioned, watch sighting target attentively, point source 1 is the LED point source.
Be the LED point source by set-point light source 1, make the life-span of the point source 1 of watching sighting target attentively long, power consumption is little and cost is low.
Preferably, above-mentioned, watch sighting target attentively, point source 1 is intensity adjustable point source.
By set-point light source 1, be intensity adjustable point source, the brightness of brightness adjustment point source 1 that can be indoor when watching sighting target attentively and use, make its brightness more meet the demand that medical science detects.
Preferably, above-mentioned, watch sighting target attentively, point source 1 is red intensity adjustable point source.
Be red intensity adjustable point source by set-point light source 1, improve the sensitivity of human body to the color of point source 1, contribute to user to find and watch sighting target attentively and watched attentively, improve the service efficiency of watching sighting target attentively.
Preferably, above-mentioned, watch sighting target attentively, cylindrical body 6 is cylinder and internal diameter is≤2mm.
Be≤2mm by cylindrical body 6 is set for cylinder and internal diameter, be convenient to make human eye to watch from all directions the detection data result that sighting target obtains attentively consistent, internal diameter is set for≤2mm, meet clinical medical need.
A kind of using method of watching sighting target attentively, cylindrical body 6 guiding detected persons' sight line is gathered in the inside of cylindrical body 6 and is seen point source 1.
The using method of watching sighting target attentively of the above embodiment of the present invention, by cylindrical body 6 is set, detected person's sight line need to just can be seen by an end of cylindrical body 6 openings the point source 1 of the other end that is positioned at sealing, also make detected person's fixation axis 3 be forced to be positioned at the inside of cylindrical body 6, thereby the detected person is reported while watching sighting target attentively, really be " watching attentively " sighting target but not " seeing " sighting target, thereby make the measurement result deviation less.
Preferably, in the above-mentioned using method of watching sighting target attentively, user is used while watching the device of sighting target attentively, meets formula
the ratio of the length that wherein α is the angle of deviation that produces while watching attentively and the tan α width that is point source 1 and cylindrical body 6, the length that L is axis oculi, Dx is the operating distance that light source arrives corneal vertex.
When sighting target is watched in use attentively, the B<W that need to satisfy condition, as shown in Figure 3, Figure 4,
When Dx=0, α=7.4 °, W=3.1mm; Work as Dx=40mm, α=1.7 °, W=1.9mm; Work as Dx=80mm, α=1 °, W=1.8mm; Work as Dx=200mm, α=0.4 °, W=1.6mm.
Again due to C=B/tana, the length that wherein C is cylindrical body 6, the diameter that B is the sighting target light source.Visible, the factor that affects sighting target tube length degree C requires the scope of error (corresponding is the α angle), the diameter B of sighting target light source, operating distance Dx, axiallength L etc.If Dx and L are certain, the light source diameter is less, and the optical tube length needed is shorter.
For example, when the light source diameter is 1mm and 0.5mm, the normal adult axis oculi is about 24mm, requires the axis oculi error of measuring to be less than 0.2mm, and during operating distance 200mm, according to formula (1) 1 and (3), the length of the sighting target cylinder that can need is for being respectively 137mm and 69mm.
Therefore, watch the condition of sighting target attentively by setup and use, be convenient to make and produce and watch sighting target attentively according to the demand of user, and convenient according to the condition of watching sighting target attentively, measure fast and accurately the needed parameter of ophthalmic measurement.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (8)
1. watch sighting target attentively for one kind, it is characterized in that, comprising: point source and cylindrical body;
Described point source is located at an end of described cylindrical body; The other end opening of described cylindrical body.
2. according to claim 1ly watch sighting target attentively, it is characterized in that, the ratio of the width of described point source and the length of described cylindrical body is less than tan7.4 °.
3. according to claim 2ly watch sighting target attentively, it is characterized in that, described point source is the LED point source.
4. according to claim 2ly watch sighting target attentively, it is characterized in that, described point source is intensity adjustable point source.
5. according to claim 4ly watch sighting target attentively, it is characterized in that, described point source is red intensity adjustable point source.
6. according to claim 4ly watch sighting target attentively, it is characterized in that, described cylindrical body is cylinder and internal diameter is≤2mm.
7. a using method of watching sighting target attentively as described as claim 1-6 any one, is characterized in that, described cylindrical body guiding detected person's sight line is gathered in the inside of described cylindrical body and seen point source.
8. using method according to claim 7, is characterized in that, when described user is used the described device of watching sighting target attentively, meets formula
the ratio of the length that wherein α is the angle of deviation that produces while watching attentively and the tan α width that is described point source and described cylindrical body, the length that L is axis oculi, Dx is the operating distance that light source arrives corneal vertex.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310393506.9A CN103431836B (en) | 2013-09-02 | 2013-09-02 | Watch sighting target attentively and watch the using method of sighting target attentively |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310393506.9A CN103431836B (en) | 2013-09-02 | 2013-09-02 | Watch sighting target attentively and watch the using method of sighting target attentively |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103431836A true CN103431836A (en) | 2013-12-11 |
| CN103431836B CN103431836B (en) | 2015-08-05 |
Family
ID=49685631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310393506.9A Expired - Fee Related CN103431836B (en) | 2013-09-02 | 2013-09-02 | Watch sighting target attentively and watch the using method of sighting target attentively |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103431836B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852796A (en) * | 2016-05-06 | 2016-08-17 | 南阳师范学院 | Method for measuring physiological blind spots through perimeter and visual chart |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH024311A (en) * | 1988-06-13 | 1990-01-09 | Kamiya Sadayoshi | Inspection instrument for contact lens |
| US5013319A (en) * | 1989-06-05 | 1991-05-07 | Mount Sinai School Of Medicine Of The City University Of New York | Apparatus and method for cornea marking |
| CN2552474Y (en) * | 2002-06-22 | 2003-05-28 | 顾宝文 | Strabismus quantitative photographic analyser |
| CN101411607A (en) * | 2007-10-16 | 2009-04-22 | 张光荣 | Device for photographing conjunctiva and sclera of eyeball |
| CN201308475Y (en) * | 2008-12-02 | 2009-09-16 | 南昌航空大学 | Human eye subjective visual-quality diagnostic apparatus |
| CN101766472A (en) * | 2009-12-31 | 2010-07-07 | 中国科学院长春光学精密机械与物理研究所 | Liquid crystal adaptive retinal imaging optical system for aberration correction with self-regulating visibility |
| CN203506688U (en) * | 2013-09-02 | 2014-04-02 | 王涛 | Sighting target |
-
2013
- 2013-09-02 CN CN201310393506.9A patent/CN103431836B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH024311A (en) * | 1988-06-13 | 1990-01-09 | Kamiya Sadayoshi | Inspection instrument for contact lens |
| US5013319A (en) * | 1989-06-05 | 1991-05-07 | Mount Sinai School Of Medicine Of The City University Of New York | Apparatus and method for cornea marking |
| CN2552474Y (en) * | 2002-06-22 | 2003-05-28 | 顾宝文 | Strabismus quantitative photographic analyser |
| CN101411607A (en) * | 2007-10-16 | 2009-04-22 | 张光荣 | Device for photographing conjunctiva and sclera of eyeball |
| CN201308475Y (en) * | 2008-12-02 | 2009-09-16 | 南昌航空大学 | Human eye subjective visual-quality diagnostic apparatus |
| CN101766472A (en) * | 2009-12-31 | 2010-07-07 | 中国科学院长春光学精密机械与物理研究所 | Liquid crystal adaptive retinal imaging optical system for aberration correction with self-regulating visibility |
| CN203506688U (en) * | 2013-09-02 | 2014-04-02 | 王涛 | Sighting target |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105852796A (en) * | 2016-05-06 | 2016-08-17 | 南阳师范学院 | Method for measuring physiological blind spots through perimeter and visual chart |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103431836B (en) | 2015-08-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6447119B1 (en) | Apparatus for visualizing the eye's tear film | |
| US6059773A (en) | Method and apparatus for measuring properties of the eye using an virtual object | |
| US7878652B2 (en) | Adaptive photoscreening system | |
| CN101123910B (en) | Method and device for detecting retinopathy | |
| CN100367905C (en) | Contrast chart device and contrast visual sensitivity measuring device | |
| US20160287070A1 (en) | Hand-held vision detecting device and vision detecting method | |
| CN104490359B (en) | For the mancarried device of juvenile's Vision screening | |
| US20090303439A1 (en) | Ophthalmic apparatus | |
| ES2970062T3 (en) | Computer-implemented method and system for the interactive measurement of ocular refractive errors, addition and power of reading glasses | |
| JPH10502002A (en) | Apparatus and method for evaluating the refractive power of the eye | |
| CN106580244A (en) | A Portable Infrared Light Eccentric Photography Optometry System | |
| CN101732029A (en) | Wave-front aberration-based vision tester | |
| CN104042186A (en) | Self-service type eye comprehensive detection device | |
| KR101525352B1 (en) | Retinoscope | |
| US8696125B2 (en) | Eye refractive power measurement apparatus | |
| CN101601577B (en) | An Electronic Perimeter with Eye Tracking and Refractive Compensation Functions | |
| CN203506688U (en) | Sighting target | |
| CN103431836B (en) | Watch sighting target attentively and watch the using method of sighting target attentively | |
| ES2942865T3 (en) | Determination of values for myopia control of one eye of a user | |
| CN118091881A (en) | Human eye diopter detection optical system and subjective optometry | |
| CN209285467U (en) | A kind of eyesight detection device based on eccentricity cycles principle | |
| KR200480621Y1 (en) | Apparatus for eye-sight test | |
| Abrahamsson et al. | Photorefraction: a useful tool to detect small angle strabismus | |
| RU2669228C1 (en) | Spheroperimeter | |
| US9717407B2 (en) | Apparatus and method for testing night vision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20200902 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |