CN105534522A - Perimeter stimulation screen structure - Google Patents
Perimeter stimulation screen structure Download PDFInfo
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- CN105534522A CN105534522A CN201510926806.8A CN201510926806A CN105534522A CN 105534522 A CN105534522 A CN 105534522A CN 201510926806 A CN201510926806 A CN 201510926806A CN 105534522 A CN105534522 A CN 105534522A
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- straight line
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/398—Electrooculography [EOG], e.g. detecting nystagmus; Electroretinography [ERG]
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Abstract
The invention provides a perimeter stimulation screen structure. The perimeter stimulation screen structure includes a stimulation screen body; a central fixation point, a first fixation lamp, a second fixation lamp, a fifth fixation lamp and a sixth fixation lamp are arranged on the stimulation screen body; a human eye watching position and the central fixation point are connected to form a fifth straight line; the first fixation lamp and the human eye watching position are connected to form a first straight line; the second fixation lamp and the human eye watching position are connected to form a second straight line; the fifth straight line, the first straight line and the second straight line are parallel to a horizontal plane; a first inclined angle between the fifth straight line and the first straight line is 5-10 degrees; a second inclined angle between the first straight line and the second straight line is 5-10 degrees; the fifth fixation lamp and the first fixation lamp are symmetrical with respect to the fifth straight line; the sixth fixation lamp and the second fixation lamp are symmetrical with respect to the fifth straight line; and an inner surface of the stimulation screen body is provided with a coating layer. The perimeter stimulation screen structure can measurement changes of a rest potential of a retina in the condition of bright and dark adaptation when an eyeball moves at different angles.
Description
Technical field
The invention belongs to Visual System Electrophysiology Technique field, particularly a kind of visual field instrument stimulates screen structure.
Background technology
Electro-oculogram measures the retina electrostatic potential existed between retinal pigment epithelium and photoreceptor cell.According to the change of retina rest potential under light and dark adaptation condition, the photochemical reaction of photoreceptor cell and epiretinal function status can be reflected, also can be used for measuring eyeball position and oculomotor physiological change.Amphiblestroid electricity reaction is from baroque retina neural reticular tissue.Retinal photoreceptor epithelium is positive potential, and pigment epithelium direction is nagative potential, and two interlayer potential differences can reach 60mV.Positive potential can to forwarding to cornea, and nagative potential passes to after sclera backward.When eyeball turns to endocanthion angle, the cornea of positive pole shifts near the nearly angle of eye lateral of rear Ghandler motion of endocanthion angle and negative pole, otherwise just obtains contrary result to angle of eye lateral rotation.Changing with the rotation of eyeball at the inside and outside corner of the eyes angle of the examinee electric current respectively put detected by an electrode under dark, light adaptation condition is exactly electro-oculogram.
At present, visual field instrument stimulates the location arrangements of the upper fixation lamp of screen unreasonable, is not easy to measure the retina rest potential of people's Rotation of eyeball multiple angles.
Meanwhile, stimulate screen usually to adopt lacquer spraying technique to form matte surface, select to spray paint material, by adjustment spraying level and granularity, also can reach requirement, but the method complex process, and yield rate is lower.
Summary of the invention
A kind of simple and reasonable visual field instrument is the object of the present invention is to provide to stimulate screen structure, regular for multiple fixation lamp being located at is stimulated screen, by turning on the fixation lamp of diverse location, the change of retina retina rest potential under light and dark adaptation condition when can measure Rotation of eyeball different angles respectively, for clinical trial, to provide multiple numerical value for reference, also for the segmentation research of scientific research institutions provides help.The described inner surface of screen body that stimulates is provided with coating, and coating processing technology is simple, and yield rate is high, and can form uniform illumination degree on surface.
The object of the invention is by such technical scheme realize, it comprises stimulates screen body, described stimulation screen body is provided with central fixation point, first fixation lamp, second fixation lamp, 5th fixation lamp and the 6th fixation lamp, people's eye fixation place and central fixation point connect into the 5th straight line, described first fixation lamp and people's eye fixation place connect into the first straight line, described second fixation lamp and people's eye fixation place connect into the second straight line, described 5th straight line, first straight line and the second straight line are all and plane-parallel, described 5th straight line becomes the first angle to be 5-10 degree with the first straight line, described first straight line becomes the second angle to be 5-10 degree with the second straight line, described 5th fixation lamp and the first fixation lamp are about the 5th straight line symmetry, described 6th fixation lamp and the second fixation lamp are about the 5th straight line symmetry, the described inner surface of screen body that stimulates is provided with coating, described coating is formed by barium sulfate and rubstick Homogeneous phase mixing.
During use, human eye is watched attentively by people's eye fixation place stimulates screen, turn on the fixation lamp of diverse location, eyeball is followed the fixation lamp lighted and is rotated, the change of retina retina rest potential under light and dark adaptation condition when can measure Rotation of eyeball different angles respectively, for clinical trial, to provide multiple numerical value for reference, also for the segmentation research of scientific research institutions provides help.
The material of coating is pure barium sulfate, and because barium sulfate is white, not absorbing light, diffuse reflectance is close to 1, and reflexive is better, is comparatively ideal material.
Coating is attached to and stimulates screen body to adopt following steps:
First, fixing full visual field stimulator spheroid;
Secondly, by barium sulfate and rubstick Homogeneous phase mixing by a certain percentage;
Then, spray-on coating, with automatic spray gun by mixture on inwall the even application thin layer of gained by barium sulfate and rubstick, then by dry hot air dries surface, after dry tack free, repeat the step about 30 times spraying and dry, form the barium sulfate coating of about 1mm on surface.
Adopt above-mentioned steps, the processing technology of coating is simple, and yield rate is high, when light-illuminating, can form uniform illumination degree in stimulation screen body internal surface.
Further, described stimulation screen body also comprises the 3rd fixation lamp and the 7th fixation lamp, described 3rd fixation lamp and people's eye fixation place connect into the 3rd straight line, described 3rd straight line and plane-parallel, described 3rd straight line becomes the 3rd angle to be 5-10 degree with the second straight line, and described 7th fixation lamp and the 3rd fixation lamp are about the 5th straight line symmetry.
Further, described stimulation screen body also comprises the 4th fixation lamp and the 8th fixation lamp, described 4th fixation lamp and people's eye fixation place connect into the 4th straight line, described 4th straight line and plane-parallel, described 4th straight line becomes the 4th angle to be 5-10 degree with the 3rd straight line, and described 8th fixation lamp and the 4th fixation lamp are about the 5th straight line symmetry.
Further, described first angle, the second angle, the 3rd angle are identical with the number of degrees of the 4th angle.
Further, the number of degrees of described first angle, the second angle, the 3rd angle and the 4th angle are 7.5 degree.
Further, the described inner surface stimulating screen body is a sphere, and described coating layer thickness is 0.8-1.2mm.
Owing to have employed technique scheme, the present invention has simple and reasonable advantage, regular for multiple fixation lamp being located at is stimulated screen by it, by turning on the fixation lamp of diverse location, the change of retina retina rest potential under light and dark adaptation condition when can measure Rotation of eyeball different angles respectively, for clinical trial, to provide multiple numerical value for reference, also for the segmentation research of scientific research institutions provides help.The described inner surface of screen body that stimulates is provided with coating, and coating processing technology is simple, and yield rate is high, and can form uniform illumination degree on surface.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Fig. 2 is the sectional view of Fig. 1.
In figure, the 1, first fixation lamp; 2, the second fixation lamp; 3, the 3rd fixation lamp; 4, the 4th fixation lamp; 5, the 5th fixation lamp; 6, the 6th fixation lamp; 7, the 7th fixation lamp; 8, the 8th fixation lamp; 9, central fixation point; 10, screen body is stimulated; 11, coating.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
As illustrated in fig. 1 and 2, the present invention includes and stimulate screen body 10, described stimulation screen body 10 is provided with central fixation point 9, first fixation lamp 1, second fixation lamp 2, 5th fixation lamp 5 and the 6th fixation lamp 6, people's eye fixation place and central fixation point 9 connect into the 5th straight line, described first fixation lamp 1 connects into the first straight line with people's eye fixation place, described second fixation lamp 2 connects into the second straight line with people's eye fixation place, described 5th straight line, first straight line and the second straight line are all and plane-parallel, described 5th straight line becomes the first angle to be 5-10 degree with the first straight line, described first straight line becomes the second angle to be 5-10 degree with the second straight line, described 5th fixation lamp 5 and the first fixation lamp 1 are about the 5th straight line symmetry, described 6th fixation lamp 6 and the second fixation lamp 2 are about the 5th straight line symmetry, the described inner surface of screen body 10 that stimulates is provided with coating 11, described coating 11 is formed by barium sulfate and rubstick Homogeneous phase mixing.
During use, human eye is watched attentively by people's eye fixation place stimulates screen, turn on the fixation lamp of diverse location, eyeball is followed the fixation lamp lighted and is rotated, the change of retina retina rest potential under light and dark adaptation condition when can measure Rotation of eyeball different angles respectively, for clinical trial, to provide multiple numerical value for reference, also for the segmentation research of scientific research institutions provides help.
The material of coating 11 is pure barium sulfate, and because barium sulfate is white, not absorbing light, diffuse reflectance is close to 1, and reflexive is better, is comparatively ideal material.
Coating 11 is attached to and stimulates screen body 10 to adopt following steps:
First, fixing full visual field stimulator spheroid;
Secondly, by barium sulfate and rubstick Homogeneous phase mixing by a certain percentage;
Then, spray-on coating 11, with automatic spray gun by mixture on inwall the even application thin layer of gained by barium sulfate and rubstick, then by dry hot air dries surface, after dry tack free, repeat the step about 30 times spraying and dry, form the barium sulfate coating 11 of about 1mm on surface.
Adopt above-mentioned steps, the processing technology of coating 11 is simple, and yield rate is high, when light-illuminating, can form uniform illumination degree at stimulation screen body 10 inner surface.
As shown in Figure 1, described stimulation screen body 10 also comprises the 3rd fixation lamp 3 and the 7th fixation lamp 7, described 3rd fixation lamp 3 connects into the 3rd straight line with people's eye fixation place, described 3rd straight line and plane-parallel, described 3rd straight line becomes the 3rd angle to be 5-10 degree with the second straight line, and described 7th fixation lamp 7 and the 3rd fixation lamp 3 are about the 5th straight line symmetry.
As shown in Figure 1, described stimulation screen body 10 also comprises the 4th fixation lamp 4 and the 8th fixation lamp 8, described 4th fixation lamp 4 connects into the 4th straight line with people's eye fixation place, described 4th straight line and plane-parallel, described 4th straight line becomes the 4th angle to be 5-10 degree with the 3rd straight line, and described 8th fixation lamp 8 and the 4th fixation lamp 4 are about the 5th straight line symmetry.
As specific embodiment, described first angle, the second angle, the 3rd angle are identical with the number of degrees of the 4th angle.The angle that eyeball rotates at every turn is identical, is more conducive to as clinical trial provides reference.
As specific embodiment, the number of degrees of described first angle, the second angle, the 3rd angle and the 4th angle are 7.5 degree.
As specific embodiment, the inner surface of described stimulation screen body 10 is a sphere, and described coating 11 thickness is 0.8-1.2mm.
These are only embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every equivalent structure utilizing description of the present invention and accompanying drawing content to do, is directly or indirectly used in the technical field that other are relevant, all in like manner within scope of patent protection of the present invention.
Claims (6)
1. visual field instrument stimulates screen structure, it is characterized in that, comprise and stimulate screen body, described stimulation screen body is provided with central fixation point, first fixation lamp, second fixation lamp, 5th fixation lamp and the 6th fixation lamp, people's eye fixation place and central fixation point connect into the 5th straight line, described first fixation lamp and people's eye fixation place connect into the first straight line, described second fixation lamp and people's eye fixation place connect into the second straight line, described 5th straight line, first straight line and the second straight line are all and plane-parallel, described 5th straight line becomes the first angle to be 5-10 degree with the first straight line, described first straight line becomes the second angle to be 5-10 degree with the second straight line, described 5th fixation lamp and the first fixation lamp are about the 5th straight line symmetry, described 6th fixation lamp and the second fixation lamp are about the 5th straight line symmetry, the described inner surface of screen body that stimulates is provided with coating, described coating is formed by barium sulfate and rubstick Homogeneous phase mixing.
2. visual field instrument as claimed in claim 1 stimulates screen structure, it is characterized in that, described stimulation screen body also comprises the 3rd fixation lamp and the 7th fixation lamp, described 3rd fixation lamp and people's eye fixation place connect into the 3rd straight line, described 3rd straight line and plane-parallel, described 3rd straight line becomes the 3rd angle to be 5-10 degree with the second straight line, and described 7th fixation lamp and the 3rd fixation lamp are about the 5th straight line symmetry.
3. visual field instrument as claimed in claim 2 stimulates screen structure, it is characterized in that, described stimulation screen body also comprises the 4th fixation lamp and the 8th fixation lamp, described 4th fixation lamp and people's eye fixation place connect into the 4th straight line, described 4th straight line and plane-parallel, described 4th straight line becomes the 4th angle to be 5-10 degree with the 3rd straight line, and described 8th fixation lamp and the 4th fixation lamp are about the 5th straight line symmetry.
4. visual field instrument as claimed in claim 3 stimulates screen structure, it is characterized in that, described first angle, the second angle, the 3rd angle are identical with the number of degrees of the 4th angle.
5. visual field instrument as claimed in claim 4 stimulates screen structure, it is characterized in that, the number of degrees of described first angle, the second angle, the 3rd angle and the 4th angle are 7.5 degree.
6. visual field instrument as claimed in claim 5 stimulates screen structure, it is characterized in that, the described inner surface stimulating screen body is a sphere, and described coating layer thickness is 0.8-1.2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510926806.8A CN105534522A (en) | 2015-12-14 | 2015-12-14 | Perimeter stimulation screen structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510926806.8A CN105534522A (en) | 2015-12-14 | 2015-12-14 | Perimeter stimulation screen structure |
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| CN105534522A true CN105534522A (en) | 2016-05-04 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61144516A (en) * | 1984-12-18 | 1986-07-02 | Mochida Pharmaceut Co Ltd | Visual field meter |
| CN2879958Y (en) * | 2006-02-24 | 2007-03-21 | 重庆市南岸区光耀工艺品加工厂 | Inner hemisphere of rear-projection type pecioptometry apparatus |
| CN101342072A (en) * | 2008-08-29 | 2009-01-14 | 天津医科大学 | Four-point vision range detecting device and detecting method |
| US20120127430A1 (en) * | 2009-08-02 | 2012-05-24 | Tel Hashomer Medical Research Infrastructure And Services Ltd | System And Method For Objective Chromatic Perimetry Analysis Using Pupillometer |
-
2015
- 2015-12-14 CN CN201510926806.8A patent/CN105534522A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61144516A (en) * | 1984-12-18 | 1986-07-02 | Mochida Pharmaceut Co Ltd | Visual field meter |
| CN2879958Y (en) * | 2006-02-24 | 2007-03-21 | 重庆市南岸区光耀工艺品加工厂 | Inner hemisphere of rear-projection type pecioptometry apparatus |
| CN101342072A (en) * | 2008-08-29 | 2009-01-14 | 天津医科大学 | Four-point vision range detecting device and detecting method |
| US20120127430A1 (en) * | 2009-08-02 | 2012-05-24 | Tel Hashomer Medical Research Infrastructure And Services Ltd | System And Method For Objective Chromatic Perimetry Analysis Using Pupillometer |
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Application publication date: 20160504 |