JPS5817611B2 - Binocular open perimeter - Google Patents
Binocular open perimeterInfo
- Publication number
- JPS5817611B2 JPS5817611B2 JP53113444A JP11344478A JPS5817611B2 JP S5817611 B2 JPS5817611 B2 JP S5817611B2 JP 53113444 A JP53113444 A JP 53113444A JP 11344478 A JP11344478 A JP 11344478A JP S5817611 B2 JPS5817611 B2 JP S5817611B2
- Authority
- JP
- Japan
- Prior art keywords
- eye
- visual field
- fixation
- optical axis
- subject
- 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.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B9/00—Blowing glass; Production of hollow glass articles
- C03B9/30—Details of blowing glass; Use of materials for the moulds
- C03B9/32—Giving special shapes to parts of hollow glass articles
- C03B9/33—Making hollow glass articles with feet or projections; Moulds therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Eye Examination Apparatus (AREA)
- Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Containers Having Bodies Formed In One Piece (AREA)
Description
【発明の詳細な説明】
視野測定は、網膜疾患はもとより視神経から視中枢に至
る異常を知るうえで非常に有用な検査である。DETAILED DESCRIPTION OF THE INVENTION Visual field measurement is a very useful test for determining not only retinal diseases but also abnormalities from the optic nerve to the optic center.
しかるに従来より視野測定に用いられている視野計にお
いては、片眼の視野測定に際して、測定しない信服には
乳白色の専用眼帯などで覆い、被検眼で視野計内の固視
灯あるいは固視点を凝視させて行なっていた。However, with the conventional perimetry used for visual field measurement, when measuring the visual field of one eye, the eye that is not being measured is covered with a special milky-white eyepatch, and the eye to be examined is fixed at the fixation light or fixation point inside the perimetry. I let him do it.
したがって被検眼に黄斑部疾患などの中心視野障害があ
って固視灯などを凝視できない場合には正確な視野測定
ができなかった。Therefore, if the subject's eye has a central visual field disorder such as macular disease and is unable to gaze at a fixation lamp or the like, accurate visual field measurements cannot be made.
さらに片眼で1点を凝眼する場合にはかなりの疲労を伴
ない、それが固視微動とか調節、瞳孔径の変化を促し正
確な視野測定を妨げていた。Furthermore, staring at a single point with one eye is accompanied by considerable fatigue, which causes small movements of fixation, accommodation, and changes in pupil diameter, which impedes accurate visual field measurement.
本発明は、上述のような問題点を解決し、両眼視の状態
で片眼の視野測定を可能にした視野計に関するものであ
り、さらに詳しくいえば、両眼で凝視する固視点を配置
するための固視スクリーンと、いずれか一方の眼の光軸
上に配置されたハーフミラ−と、該ハーフミラ−により
反射された光軸上に配置された視野計とから構成され、
両眼視の状態で片眼の視野を測定できることを特徴とす
る両眼開放視野計に関するものである。The present invention relates to a perimeter that solves the above-mentioned problems and makes it possible to measure the visual field of one eye in a binocular viewing state.More specifically, the present invention relates to a perimeter that allows fixation points for fixation with both eyes to be placed. It consists of a fixation screen for viewing, a half mirror placed on the optical axis of either eye, and a perimeter placed on the optical axis reflected by the half mirror,
The present invention relates to a binocular open field meter that is capable of measuring the visual field of one eye in a binocular viewing state.
以下、本発明の1実施例について図面により説明する。Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
第1図は本発明の1実施例の平面断面図であり、第2図
は第1図のx−x’断面図である。FIG. 1 is a plan sectional view of one embodiment of the present invention, and FIG. 2 is a sectional view taken along line xx' in FIG.
1は被検者の左眼、2は被眼者の右眼であり、今、右眼
2の視野測定を行なおうとしている。1 is the subject's left eye, 2 is the subject's right eye, and the visual field of the right eye 2 is about to be measured.
1a、2aはそれぞれの眼1,2の光軸であり、固視ス
クリーン3上に配置された固視点Pを凝視している。1a and 2a are optical axes of the eyes 1 and 2, respectively, which gaze at a fixation point P arranged on a fixation screen 3.
4は被検眼2の光軸2a上に配置されたハーフミラ−で
ある。4 is a half mirror placed on the optical axis 2a of the eye 2 to be examined.
2bは該ハーフミラ−4によって反射された被検眼2の
光軸である。2b is the optical axis of the subject's eye 2 reflected by the half mirror 4.
5は左眼1の光軸1a上に配置されて、被検眼2と左眼
1で固視点Pを見たときの明るさの差を補正するための
ハーフミラ−86はチャートボックス、7はシャッター
、8はチャート板、9はフィルター、10はコンデンサ
ーレンズ、11はランプである。5 is a half mirror placed on the optical axis 1a of the left eye 1 to correct the difference in brightness when the fixation point P is viewed between the eye 2 and the left eye 1. 86 is a chart box, and 7 is a shutter. , 8 is a chart board, 9 is a filter, 10 is a condenser lens, and 11 is a lamp.
チャート板8には、円、四角形等が印されている。The chart board 8 is marked with circles, squares, etc.
外周板12の内側で光軸2bを軸に矢印入方向に回転可
能に保持されている回転板、14は該回転板13に固設
されているレールで、チャートボックス6に設けられた
ローラー15によってチャートボックス6が矢印B方向
に摺動可能になっている。A rotary plate 14 is held rotatably in the direction of the arrow around the optical axis 2b inside the outer peripheral plate 12, and 14 is a rail fixed to the rotary plate 13, and a roller 15 provided on the chart box 6 This allows the chart box 6 to slide in the direction of arrow B.
そして、チャートボックス6、シャッター7、チャート
板8、フィルター9、コンデンサーレンズ10、ランプ
11、外周板12、回転板13、レール14、ローラ1
5で視野計を構成している。Chart box 6, shutter 7, chart board 8, filter 9, condenser lens 10, lamp 11, outer peripheral plate 12, rotary plate 13, rail 14, roller 1
5 constitutes a perimeter.
以上のような装置において、視野測定を行なうには次の
ように操作する。In the above-described apparatus, the following operations are performed to measure the visual field.
先ず、被検者の両眼の光軸1a、2aがそれぞれハーフ
ミラ−5,4を通るようにして、固視点Pを凝視させ、
被検眼2と固視点Pの距離と被検眼2と回転板13の距
離を等しくする。First, the subject is made to fixate the fixation point P so that the optical axes 1a and 2a of both eyes pass through the half mirrors 5 and 4, respectively.
The distance between the eye 2 to be examined and the fixation point P and the distance between the eye 2 to be examined and the rotary plate 13 are made equal.
次にシャッター7を開けて、ランプ11によって照射さ
れた形などを被検者に識別させる。Next, the shutter 7 is opened and the subject is asked to identify the shape illuminated by the lamp 11.
チャート板8は、回転板13の回転とチャートボックス
6の摺動とによって視野内を走査し、適当な間隔をおい
てシャッター7を開閉して被検者に形を識別させる。The chart board 8 scans the field of view by the rotation of the rotary board 13 and the sliding of the chart box 6, and the subject is allowed to identify the shapes by opening and closing the shutter 7 at appropriate intervals.
この操作を繰り返すことによって視野測定を行ない、場
合によっては、予め用意した赤、黄、緑、青などのフィ
ルター9を交換して色による視野の変化を測定すること
もできる。By repeating this operation, the visual field is measured, and depending on the case, it is also possible to replace the previously prepared red, yellow, green, blue, etc. filters 9 to measure changes in the visual field due to color.
なお、本発明による両眼開放視野計の視野計部分には従
来よりあるゴールドマン型視野計を配置してもよい。Note that a conventional Goldmann type perimeter may be arranged in the perimeter portion of the binocular open perimeter according to the present invention.
また、固視点Pは小さいランプ等をそこへ配置してもよ
く、小さい光点を投影によって配置してもよい。Furthermore, a small lamp or the like may be placed at the fixation point P, or a small light spot may be placed by projection.
以上の説明から明らかなように、本発明による両眼開放
視野計によれば、被検眼の中心視野に異常があっても正
確な視野測定ができ、また両眼視は片眼視よりも被検者
に与える゛疲労の度合が軽くより正確な視野測定を行な
うことができる。As is clear from the above explanation, the binocular open perimetry according to the present invention allows accurate visual field measurement even if there is an abnormality in the central visual field of the subject's eye, and binocular vision is more effective than monocular vision. The degree of fatigue imparted to the examiner is reduced and more accurate visual field measurements can be performed.
また、固視スクリーンの形、大きさなどを変えたり、固
視スクリーンに実際の風景などを投影したりして、種々
の状態での視野測定を行なうこともできる。Furthermore, the visual field can be measured in various conditions by changing the shape, size, etc. of the fixation screen, or by projecting actual scenery on the fixation screen.
第1図は本発明の1実施例の平面断面図、第2図は第1
図のx−x’断面図である。
1・・・・・・被検者の左眼、1a・・・・・・左眼1
の光軸、2・・・・・・被検者の右眼(被検者)、3・
・・・・・固視スクリーン、4・・・・・・ハーフミラ
−15・・・・・・ハーフミラ−16・・・・・・チャ
ートボックス、7・・・・・・シャッター、8・・・・
・・チャート板、9・・・・・・フィルター、10・・
・・・・コンデンサーレンズ、11・・・・・・ランフ
、12・・・・・・外周板、13・・・・・・回転板、
P・・・・・・固視点。FIG. 1 is a plan sectional view of one embodiment of the present invention, and FIG.
FIG. 1... Left eye of the subject, 1a... Left eye 1
optical axis, 2... right eye of the subject (subject), 3.
... Fixation screen, 4 ... Half mirror 15 ... Half mirror 16 ... Chart box, 7 ... Shutter, 8 ...・
...Chart board, 9...Filter, 10...
... Condenser lens, 11 ... Lump, 12 ... Outer plate, 13 ... Rotating plate,
P...Fixation point.
Claims (1)
ーンと、いずれか一方の眼の光軸上に配置されたハーフ
ミラ−と、該ハーフミラ−により反射された光軸上に配
置された視野計とから構成され、両眼視の状態で片眼の
視野を測定できることを特徴とする両眼開放視野計。1. A fixation screen for arranging a fixation point for fixation with both eyes, a half mirror placed on the optical axis of either eye, and a visual field placed on the optical axis reflected by the half mirror. 1. A binocular open perimetry device, which is characterized in that it can measure the visual field of one eye in a binocular viewing condition.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3532573A GB1444622A (en) | 1973-07-25 | 1973-07-25 | Method and apparatus for making articles from a viscous material |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5540534A JPS5540534A (en) | 1980-03-22 |
JPS5817611B2 true JPS5817611B2 (en) | 1983-04-08 |
Family
ID=10376454
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53113444A Expired JPS5817611B2 (en) | 1973-07-25 | 1978-09-14 | Binocular open perimeter |
Country Status (7)
Country | Link |
---|---|
JP (1) | JPS5817611B2 (en) |
BE (1) | BE802954A (en) |
CA (1) | CA1005642A (en) |
DE (1) | DE2344485A1 (en) |
FR (1) | FR2237846B1 (en) |
GB (1) | GB1444622A (en) |
NL (1) | NL7310699A (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB8505403D0 (en) * | 1985-03-02 | 1985-04-03 | Glass Bulbs Ltd | Manufacture of stemware |
DE102004054024B4 (en) * | 2004-11-05 | 2015-09-24 | Rastal Gmbh & Co Kg | Vessel with a base, method of making the vessel, tool for making the vessel and display |
CN102617015B (en) * | 2012-03-23 | 2013-11-06 | 常熟建华模具科技股份有限公司 | Mould for manufacturing glass container |
NL2016957B1 (en) * | 2016-06-14 | 2017-12-21 | Ampersand B V | Drinking glass, method and device for manufacturing such a drinking glass |
-
1973
- 1973-07-20 FR FR7326827A patent/FR2237846B1/fr not_active Expired
- 1973-07-25 GB GB3532573A patent/GB1444622A/en not_active Expired
- 1973-07-30 BE BE134001A patent/BE802954A/en not_active IP Right Cessation
- 1973-08-02 NL NL7310699A patent/NL7310699A/en unknown
- 1973-08-15 CA CA178,844A patent/CA1005642A/en not_active Expired
- 1973-09-04 DE DE19732344485 patent/DE2344485A1/en active Pending
-
1978
- 1978-09-14 JP JP53113444A patent/JPS5817611B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2237846B1 (en) | 1978-08-11 |
FR2237846A1 (en) | 1975-02-14 |
GB1444622A (en) | 1976-08-04 |
DE2344485A1 (en) | 1975-04-10 |
BE802954A (en) | 1973-11-16 |
JPS5540534A (en) | 1980-03-22 |
CA1005642A (en) | 1977-02-22 |
NL7310699A (en) | 1975-02-04 |
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