JPS61144516A - Visual field meter - Google Patents
Visual field meterInfo
- Publication number
- JPS61144516A JPS61144516A JP59266590A JP26659084A JPS61144516A JP S61144516 A JPS61144516 A JP S61144516A JP 59266590 A JP59266590 A JP 59266590A JP 26659084 A JP26659084 A JP 26659084A JP S61144516 A JPS61144516 A JP S61144516A
- Authority
- JP
- Japan
- Prior art keywords
- dome
- light emitting
- visual
- green light
- radius
- 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.)
- Pending
Links
Classifications
-
- 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
- A61B3/024—Subjective types, i.e. testing apparatus requiring the active assistance of the patient for determining the visual field, e.g. perimeter types
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Biophysics (AREA)
- Ophthalmology & Optometry (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Eye Examination Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、緑色の発光ダイオードを視標とする比較的小
型のドームをもって構成される視野計に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a perimeter comprising a relatively small dome with a green light emitting diode as a visual target.
従来視野計におけるドームの大きさは、被検者の一方の
眼がほぼドームの中心にある固定位置の固視標に指向さ
れた場合に固視が容易であるという理由から通常、半径
が300〜500−の範囲内で設定されていた。しかし
、かかる大きさのドームを有することは広大な設置面積
を必要とし、また、オイレータの作業性を著しく低下さ
せる等種種の欠点があった。The size of the dome in conventional perimeter perimeters is usually 300 mm in radius because it is easy to fixate when one eye of the subject is directed to a fixation target at a fixed position approximately in the center of the dome. It was set within the range of ~500-. However, having a dome of such a size requires a vast installation area and has various drawbacks, such as significantly reducing the workability of the oilator.
これに対し、本発明者等は、そのr−ム半径が300m
以下例えば240fiで、各視標に発光ダイオードを埋
めこみ自動的又は手動的に該ダイオードを点滅する構造
の視野計を開発しているが、このものは、診療室内等の
占有面積が少なくてすみ、また、小型・軽量であって操
作が容易であり、かつ、ドームを上下前後左右に簡単に
移動させて予め固定された被検者の規準に合わせて固視
標を移動しうる喪め該被検者の苦痛が軽減されて格段に
正確な視野データが得られる等多くの長所を有すること
が判明している。On the other hand, the present inventors have determined that the r-m radius is 300 m.
For example, we have developed a 240-fi perimeter with a structure in which a light emitting diode is embedded in each visual target and the diode is blinked automatically or manually. In addition, it is small and lightweight and easy to operate, and the dome can be easily moved up, down, forward, backward, left and right, and the fixation target can be moved according to the standards of the subject fixed in advance. It has been found that this method has many advantages, such as reducing the examiner's pain and allowing much more accurate visual field data to be obtained.
しかしながら、反面ドーム半径が300腫以上の視野計
と比較すると、ドームの単位面積あたシの発光ダイオー
ドの数が急増する(例えば半径330mのドームと半径
240sa+のドームとは前者が後者の1.89倍の内
壁表面積を有する)ため、半径300m以上の視野計で
は余り目立たなかりた各視標における発光ダイオードの
埋め込み孔が黒点として被検者に認識され該被検者の疲
労感が経時的に増大する等の欠点を有することが判った
。However, when compared to a perimeter with a dome radius of 300 m or more, the number of light emitting diodes per unit area of the dome increases rapidly (for example, a dome with a radius of 330 m and a dome with a radius of 240 m + are 1.5 m in radius and 1.5 m in radius, respectively). 89 times the inner wall surface area), the embedded holes for the light emitting diodes in each optotype, which were not very noticeable when using a perimeter with a radius of 300 m or more, were recognized by the examinee as a black spot, and the examinee's feeling of fatigue increased over time. It was found that there are disadvantages such as an increase in
本発明はドームの半径が300mm以下の視野計を対象
として、該ドームにおいて比較的顕著に目立つダイオー
ドの埋め込み孔に基づく黒点を殆んど完全に認識せしめ
ず被検者の疲労感を少くして、しかも、小型のメリット
を十分に発揮する視野計を提供しようとするものである
。The present invention is aimed at a perimeter with a dome radius of 300 mm or less, and is designed to almost completely eliminate the relatively conspicuous sunspots caused by the embedded holes of the diodes in the dome, thereby reducing the subject's sense of fatigue. Moreover, the present invention aims to provide a perimeter that fully takes advantage of its small size.
本発明は、
a、 ドームの曲率半径が最大300mであって従来視
野計と比較して格段に小径のものをその対象とし、
b、そのドームに点在する各視標には、発光時被検者に
最も視感度の高い波長をもつ緑色の発光ダイオードを選
択的に取付け、
C3また、ドームの内壁表面に、上記の緑色を補色とす
る暗赤紫色の着色層を形成せしめて、発光時の緑色の確
認を一層容易かつ確実にするとともに、発光していない
ときは各視標の埋め込み孔が被検者に黒点として認識さ
れること1くなって該被検者の苦痛を軽減し検査の信頼
性又は精度を向上する
如き構成をもって前述問題点を解決しようとするもので
ある。The present invention is directed to a) a dome with a maximum radius of curvature of 300 m, which is much smaller than that of a conventional perimeter; A green light emitting diode with the highest visibility wavelength was selectively attached to the examiner, and a dark reddish-purple colored layer was formed on the inner wall surface of the dome, with the color complementary to the green mentioned above. In addition to making it easier and more reliable to confirm the green color of the target, when it is not emitting light, the embedded hole of each optotype will be recognized by the examinee as a black spot, reducing the pain of the examinee and making the examination easier. It is an attempt to solve the above-mentioned problems with a configuration that improves the reliability or accuracy of the system.
以下図面を参照し実施例に基づいて本発明を説明する。 The present invention will be described below based on embodiments with reference to the drawings.
第1図<i) 、 (Ji) 、 GiDは夫々本発明
に係る視野計の一実施例の正面図、側面断面図及び要部
拡大断面図である。FIGS. 1<i), (Ji), and GiD are a front view, a side sectional view, and an enlarged sectional view of essential parts, respectively, of an embodiment of a perimeter according to the present invention.
この視野計は、ドーム1と該ドームを支える支持台2を
有し、また、図示しないが被検者の頭部を固定するため
の顎台と額当てとを有する。ドーム1はこれら顎台、額
当てとは独立して移動するように配置される。頭部を固
定された被検者の規準をドームの固視標3に一致させる
ため本発明に係る小型の視野計は、ドーム自身を前後、
左右又は上下しつるドーム移動装置を有するものである
が、これらは直接本発明に関係がないので詳細な説明は
省略する。This perimeter has a dome 1 and a support base 2 that supports the dome, and also has a chin rest and a forehead rest (not shown) for fixing the subject's head. The dome 1 is arranged to move independently of the chin rest and forehead rest. In order to match the standard of the subject whose head is fixed with the fixation target 3 of the dome, the small perimeter according to the present invention moves the dome itself back and forth,
It has a dome moving device that moves left and right or up and down, but since these are not directly related to the present invention, detailed explanations will be omitted.
本発明に係る視野計のドームはその曲率半径が300m
以−下好ましくは240鰭前後のものがその対象となっ
ている。The dome of the perimeter according to the present invention has a radius of curvature of 300 m.
Hereinafter, those with around 240 fins are preferably targeted.
次に、本発明にあっては、ドーム1の固視標以外の各視
標4.4.・・・に第1図GiDに示す如き発光ダイオ
ード5が取付けられ、該ダイオードは緑色に発光するも
のが採用されている。このダイオードは色ピーク波長が
555〜565ナノメータのものである。Next, in the present invention, each visual target other than the fixation target on the dome 1 4.4. A light emitting diode 5 as shown in FIG. 1 GiD is attached to . . . , and the diode emits green light. This diode has a color peak wavelength of 555-565 nanometers.
通常、視野計は暗室内で使用され、ドームの内壁のみが
僅かに明るくなる(例えば背面輝度31.5アポスチル
プ)ような照明が施嘔れているが、緑色に発光する各視
標は被検者の視認を特に容易にするものであり、しかも
目の疲労が少なくてすむ等の理由から最も好ましい。Normally, the perimeter is used in a dark room, and the illumination is such that only the inner wall of the dome is slightly bright (for example, the back luminance is 31.5 apostillum), but each target that emits green light is This is most preferable because it particularly facilitates visual recognition by the person and reduces eye fatigue.
かかる視野計において、本発明の重要な特徴部分は、ド
ーム1の内壁表面に緑色を補色とする暗赤紫色の着色層
6を形成せしめる点に存する。即ち、赤紫色を主体とす
る暗色の表面層であって、マンセル表示系の色相環では
r RP J相当の色相であり、また、CIE表色系で
は「赤紫」で表示される色相である。In such a perimeter, an important feature of the present invention resides in that a dark reddish-purple colored layer 6, which is a complementary color to green, is formed on the inner wall surface of the dome 1. That is, it is a dark-colored surface layer that is mainly reddish-purple, and has a hue equivalent to r RP J in the Munsell color system, and is a hue that is displayed as "reddish-purple" in the CIE color system. .
本発明は以上の構成に基づくもので、まず、曲率半径が
300−以下のドームを使用しているので、診療室内の
占有スペースは極めて少なくてすみ、移動が容易であっ
て、被検者の目にあわせてドームを前後・左右又は上下
に動かして固視標に対する規準を確定することができ視
野検査がスムームに行われ、被検者の受ける苦痛も著し
く軽減される等の利点があシ、また、各視標には緑色の
発光ダイオードが埋め込まれているので、被検者の視認
が容易で、かつ、目の疲労が少ない等から好ましく、さ
らに、本発明では、ドーム内面に該緑色の補色であって
殆んど黒色に近い深赤紫色の着色層を形成せしめて、い
るので、従来の白色壁面の場合に特に発光ダイオードの
埋め込み孔が黒点となって被検者の目に映じた欠点を解
消することとなって被検者の経時的疲労感が著しく減少
して検査結果の信頼性が格段に高まる仁ととなシ、また
、通電されて緑色に発光する発光ダイオードが補色関係
にある暗赤紫色のドーム内壁において特別に判然と視認
されて良好であり、さらに、従来の視野計では暗室にお
ける使用が必至であったのが、本発明に係る視野計は、
白色内面の如き輝きがないので、必ずしも暗室内に設置
しなくても、成る程度の暗さの部室であれば使用可能と
なシ、このため暗幕等で区切られる場所でも十分検査を
実施し得て好都合である等本発明視野計は多く利点を有
するものであシ極めて有用である。The present invention is based on the above configuration, and first, since it uses a dome with a radius of curvature of 300° or less, it occupies extremely little space in the clinic, is easy to move, and is This system has the advantage that the dome can be moved back and forth, left and right, or up and down in line with the eyes to determine the standard for the fixation target, allowing the visual field test to be performed smoothly and significantly reducing the pain experienced by the examinee. In addition, each optotype is embedded with a green light emitting diode, which is preferable because it is easy for the subject to see and reduces eye fatigue. A deep reddish-purple colored layer, which is a complementary color and is almost black, is formed, so that when the wall surface is conventionally white, the hole where the light emitting diode is embedded becomes a black dot, which is visible to the examinee. This eliminates the shortcomings of test subjects, significantly reducing fatigue over time and greatly increasing the reliability of test results.In addition, the light-emitting diode, which emits green light when energized, has a complementary color. It can be seen particularly clearly on the related dark reddish-purple inner wall of the dome, and furthermore, while the conventional perimeter had to be used in a dark room, the perimeter according to the present invention
Since it does not have the brightness of a white inner surface, it does not necessarily have to be installed in a dark room; it can be used in a reasonably dark club room, and therefore, it can be used in areas separated by blackout curtains. The perimeter of the present invention has many advantages, such as being very convenient.
第1図(i) 、 (Ii)及び6iDは夫々本発明に
係る視野計の一実施例の正面図、側面断面図及び要部拡
大断面図である。
1・・・ドーム、3・・・固視標、4・・・その他の視
標、5・・・発光ダイオード、6・・・着色層第1図(
1) 第1図(ii )
第1図(iii)1(i), (Ii), and 6iD are a front view, a side sectional view, and an enlarged sectional view of essential parts, respectively, of an embodiment of a perimeter according to the present invention. DESCRIPTION OF SYMBOLS 1... Dome, 3... Fixation target, 4... Other visual target, 5... Light emitting diode, 6... Colored layer Fig. 1 (
1) Figure 1 (ii) Figure 1 (iii)
Claims (1)
在する各視標に緑色の発光ダイオードが取付けられてな
る視野計であり、ドームの内壁表面に緑色を補色とする
暗赤紫色の着色層が形成されることを特徴とする視野計
。It is a perimeter meter in which the dome has a maximum radius of curvature of 300 mm and green light emitting diodes are attached to each optotype scattered around the dome, and a dark reddish-purple colored layer with green as a complementary color is formed on the inner wall surface of the dome. A visual field meter characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59266590A JPS61144516A (en) | 1984-12-18 | 1984-12-18 | Visual field meter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP59266590A JPS61144516A (en) | 1984-12-18 | 1984-12-18 | Visual field meter |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61144516A true JPS61144516A (en) | 1986-07-02 |
Family
ID=17432920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP59266590A Pending JPS61144516A (en) | 1984-12-18 | 1984-12-18 | Visual field meter |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61144516A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01238819A (en) * | 1988-03-19 | 1989-09-25 | Takagi Seisakusho:Kk | Perimeter |
WO2003017830A1 (en) * | 2001-08-27 | 2003-03-06 | Taketoshi Suzuki | Visual sense examining chart |
JP2007130495A (en) * | 2007-01-19 | 2007-05-31 | Taketoshi Suzuki | Vision test chart |
CN105342611A (en) * | 2015-12-14 | 2016-02-24 | 重庆国特医疗设备有限公司 | Visual field instrument stimulating screen structure |
CN105496408A (en) * | 2015-12-14 | 2016-04-20 | 重庆国特医疗设备有限公司 | Stimulation screen structure of perimeter |
CN105534522A (en) * | 2015-12-14 | 2016-05-04 | 重庆国特医疗设备有限公司 | Perimeter stimulation screen structure |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5025091A (en) * | 1973-02-26 | 1975-03-17 | ||
JPS5198191A (en) * | 1975-02-22 | 1976-08-28 | ||
JPS5227956A (en) * | 1975-08-28 | 1977-03-02 | Kazuo Okuno | Rotary device for trnsmitting rotation |
-
1984
- 1984-12-18 JP JP59266590A patent/JPS61144516A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5025091A (en) * | 1973-02-26 | 1975-03-17 | ||
JPS5198191A (en) * | 1975-02-22 | 1976-08-28 | ||
JPS5227956A (en) * | 1975-08-28 | 1977-03-02 | Kazuo Okuno | Rotary device for trnsmitting rotation |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01238819A (en) * | 1988-03-19 | 1989-09-25 | Takagi Seisakusho:Kk | Perimeter |
WO2003017830A1 (en) * | 2001-08-27 | 2003-03-06 | Taketoshi Suzuki | Visual sense examining chart |
CN100337580C (en) * | 2001-08-27 | 2007-09-19 | 铃木武敏 | Visual sense examining chart |
JP2007130495A (en) * | 2007-01-19 | 2007-05-31 | Taketoshi Suzuki | Vision test chart |
JP4560801B2 (en) * | 2007-01-19 | 2010-10-13 | 武敏 鈴木 | Visual inspection chart |
CN105342611A (en) * | 2015-12-14 | 2016-02-24 | 重庆国特医疗设备有限公司 | Visual field instrument stimulating screen structure |
CN105496408A (en) * | 2015-12-14 | 2016-04-20 | 重庆国特医疗设备有限公司 | Stimulation screen structure of perimeter |
CN105534522A (en) * | 2015-12-14 | 2016-05-04 | 重庆国特医疗设备有限公司 | Perimeter stimulation screen structure |
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