JPH0323206Y2 - - Google Patents
Info
- Publication number
- JPH0323206Y2 JPH0323206Y2 JP1987027648U JP2764887U JPH0323206Y2 JP H0323206 Y2 JPH0323206 Y2 JP H0323206Y2 JP 1987027648 U JP1987027648 U JP 1987027648U JP 2764887 U JP2764887 U JP 2764887U JP H0323206 Y2 JPH0323206 Y2 JP H0323206Y2
- Authority
- JP
- Japan
- Prior art keywords
- light source
- corneal
- light
- light emitting
- junction
- 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
- 210000005252 bulbus oculi Anatomy 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 4
- 210000001525 retina Anatomy 0.000 description 8
- 230000002207 retinal effect Effects 0.000 description 5
- 230000000638 stimulation Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical group [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 210000004087 cornea Anatomy 0.000 description 1
- 210000001508 eye Anatomy 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Description
【考案の詳細な説明】
(1) 技術分野
本考案は人体眼球の網膜電図記録装置に使用さ
れる光源一体型コンタクトレンズ電極に関するも
のである。[Detailed Description of the Invention] (1) Technical Field The present invention relates to a contact lens electrode with an integrated light source used in an electroretinogram recording device for human eyes.
(2) 従来技術
人間の眼球、特に網膜には一定の電位（網膜電
位）が存在し、この電位は光の刺激によつて変化
するが、この変化の記録は網膜電図
（electroretinogram：略称ERG）と呼ばれてい
る。(2) Prior art A certain electric potential (retinal potential) exists in the human eyeball, especially the retina, and this electric potential changes in response to light stimulation. )It is called.
網膜電位は角膜表面に接触させたコンタクトレ
ンズ型電極を介して取り出される。 Retinal potentials are obtained via contact lens-type electrodes in contact with the corneal surface.
第４図は従来のコンタクトレンズ型電極の一例
を示す。１は電極保持体、２は角膜接合部、３は
角膜接合部の凹面で被検者の眼球１３の角膜表面
に接触される。４は凹面３に設置したリング状電
極、５はリング状電極４に接続されたリード線
で、記録装置（図示省略）に導びかれる。なお、
もう一方の電極（図示省略）は、被検者の顔面の
適当な部位の皮膚表面に接触させられる。 FIG. 4 shows an example of a conventional contact lens type electrode. 1 is an electrode holder, 2 is a corneal junction, and 3 is a concave surface of the corneal junction, which is brought into contact with the corneal surface of the subject's eyeball 13. 4 is a ring-shaped electrode installed on the concave surface 3, and 5 is a lead wire connected to the ring-shaped electrode 4, which is led to a recording device (not shown). In addition,
The other electrode (not shown) is brought into contact with the skin surface of an appropriate part of the subject's face.
刺激光は電極保持体から離れた別体の光源１
２、例えばキセノンランプから発生され、角膜接
合部を通して眼球１３内へ照射される（第５図）。 The stimulation light is a separate light source 1 separated from the electrode holder.
2. For example, it is generated from a xenon lamp and is irradiated into the eyeball 13 through the corneal junction (FIG. 5).
(3) 考案が解決しようとする問題点
従来においては、刺激光を発生する光源は電極
保持体とは別体で、電極保持体から離して被検者
の顔面の前方に支持されるので、特別の支持機構
が必要である。また光源から発射される光は光源
の像を網膜の一局所１４にのみ結像させ、換言す
れば、被検者の網膜の一部のみが照射されるの
で、網膜全域の平均的電位を検出することができ
ず、ERGを正確に記録することができない。さ
らに光源の位置や光の強さは検査をする医師の主
観によつて決定されるので、検査結果に客観性を
欠く。(3) Problems to be solved by the invention Conventionally, the light source that generates stimulating light is separate from the electrode holder and is supported in front of the subject's face away from the electrode holder. Special support mechanisms are required. In addition, the light emitted from the light source forms an image of the light source only on one part of the retina 14, in other words, only a part of the retina of the subject is irradiated, so the average potential of the entire retina is detected. ERG cannot be recorded accurately. Furthermore, since the position of the light source and the intensity of the light are determined subjectively by the doctor conducting the test, the test results lack objectivity.
(4) 問題を解決するための手段および作用
本考案は上記従来の問題点を解決するために、
コンタクトレンズ型電極の保持体に刺激光発生用
光源を設置したものである。(4) Means and effects for solving the problem In order to solve the above-mentioned conventional problems, the present invention
A light source for generating stimulation light is installed on a contact lens-type electrode holder.
すなわち、本考案によれば、電極保持体の角膜
接合部に連接した本体部に角膜接合部とは反対側
において光源を嵌設し、光源からの光を角膜接合
部を通して眼球内へ導びく。この場合、電極保持
体本体部の端面に、角膜接合部に向かつて凸な半
球状凸レンズを嵌設し、この凸レンズの焦点付近
に光源を設置することにより、光源からの光は凸
レンズ球面全体を均一に光らし、その光の範囲は
角膜接合部を通して被検者がその光を見たとき視
野全体を覆つている。すなわち、ほぼ網膜視野全
域に均一に光刺激を与える。 That is, according to the present invention, a light source is fitted in the main body portion of the electrode holder connected to the corneal junction on the side opposite to the corneal junction, and light from the light source is guided into the eyeball through the corneal junction. In this case, a hemispherical convex lens that is convex toward the corneal junction is fitted on the end face of the electrode holder main body, and a light source is installed near the focal point of this convex lens, so that the light from the light source covers the entire spherical surface of the convex lens. It illuminates uniformly, and the range of light covers the entire visual field when viewed by the subject through the corneal junction. In other words, light stimulation is applied uniformly to almost the entire retinal visual field.
光刺激による網膜の電位の変化は、角膜接合部
の角膜接触凹面に設けたリング状電極によつて取
り出され記録装置においてERGが記録される。 Changes in retinal potential caused by light stimulation are picked up by a ring-shaped electrode provided on the corneal contact concave surface of the corneal junction, and ERG is recorded by a recording device.
(5) 実施例
以下第１図、第２図に示す本考案の一実施例を
詳細に説明するが、これらの図において第４図、
第５図と同一の参照数字は対応する部材を示す。(5) Embodiment An embodiment of the present invention shown in FIGS. 1 and 2 will be explained in detail below.
The same reference numerals as in FIG. 5 indicate corresponding parts.
すなわち、１は電極保持体で、適当な合成樹脂
で作られ、透光性の角膜接合部２と、この角膜接
合部に連接した円筒状本体部６とからなる。角膜
接合部２の凹面３にはリング状電極４が設けら
れ、リード線５が接続されている。 That is, reference numeral 1 denotes an electrode holder, which is made of a suitable synthetic resin and consists of a translucent corneal junction 2 and a cylindrical main body 6 connected to the corneal junction. A ring-shaped electrode 4 is provided on the concave surface 3 of the corneal junction 2, and a lead wire 5 is connected thereto.
本体部６の後端開口から半球状凸レンズ７をそ
の凸面が本体部６の前端（角膜接合部２）に向く
ようにして嵌設固定する。凸レンズ７の後端面に
は中央凹部８が設けられ、この凹部８に半導体発
光素子例えば発光ダイオード９が嵌合固定され、
発光ダイオードの発光点が凸レンズ７の焦点Ｐに
配置される。発光ダイオード９の両端子１０はリ
ード線１１を介して駆動装置（図示せず）に接続
される。 A hemispherical convex lens 7 is fitted and fixed from the rear end opening of the main body 6 with its convex surface facing the front end (corneal junction 2) of the main body 6. A central recess 8 is provided on the rear end surface of the convex lens 7, and a semiconductor light emitting element such as a light emitting diode 9 is fitted and fixed into this recess 8.
The light emitting point of the light emitting diode is arranged at the focal point P of the convex lens 7. Both terminals 10 of the light emitting diode 9 are connected to a driving device (not shown) via lead wires 11.
駆動装置によつて発光ダイオード９に通電する
と、発射された光は凸レンズ７によつて拡散され
電極保持体の角膜接合部２を通り角膜から眼球１
３内に入射される。凸レンズの焦点Ｐに発光点が
置かれているので、この凸レンズを凸面側から見
ると全体が光源となり、その像が網膜１３′のほ
ぼ視野全域に結ばれる（第３図）。換言すれば、
ほぼ網膜全域が光で均一に照射される。これによ
つて生じた網膜電位の変化はリング状電極４によ
つて取り出され記録装置でERGが記録される。 When the light emitting diode 9 is energized by the driving device, the emitted light is diffused by the convex lens 7, passes through the corneal junction 2 of the electrode holder, and passes from the cornea to the eyeball 1.
3. Since the light emitting point is placed at the focal point P of the convex lens, when the convex lens is viewed from the convex side, the entire lens becomes a light source, and its image is focused on almost the entire visual field of the retina 13' (FIG. 3). In other words,
Almost the entire retina is uniformly illuminated with light. Changes in the retinal potential caused by this are picked up by the ring-shaped electrode 4, and the ERG is recorded by a recording device.
(6) 効果
以上のように、本考案によれば、光源を電極保
持体に組み込んだので、光源を支持する特別の機
構が不要で、装置の構造が簡単となり、また、光
源からの光が網膜全域を照射するので、網膜全域
からの電位を測定することができ、正確な検査が
可能となる。また、半導体発光素子の通電電流お
よび時間によつて光源の明るさ、従つて照射エネ
ルギーの量がきまるので、検査者の主観による測
定値のばらつきがなく、測定結果の客観性が向上
する。(6) Effects As described above, according to the present invention, since the light source is incorporated into the electrode holder, there is no need for a special mechanism to support the light source, the structure of the device is simplified, and the light from the light source is Since the entire retina is irradiated, the potential from the entire retina can be measured, allowing for accurate testing. Furthermore, since the brightness of the light source and therefore the amount of irradiation energy are determined by the current flowing through the semiconductor light emitting element and the time, there is no variation in the measurement value due to the subjectivity of the inspector, and the objectivity of the measurement result is improved.
第１図は本考案の一実施例の正面図、第２図は
第１図のＡ−Ａ断面図、第３図は使用状態を示す
図、第４図は従来のコンタクトレンズ型電極の縦
断面図、第５図は第４図の電極の使用状態を示す
図である。
２…角膜接合部、４…リング状電極、７…凸レ
ンズ、９…発光ダイオード。
Fig. 1 is a front view of an embodiment of the present invention, Fig. 2 is a sectional view taken along line A-A in Fig. 1, Fig. 3 is a view showing the state of use, and Fig. 4 is a vertical cross-section of a conventional contact lens type electrode. The top view of FIG. 5 is a view showing the state in which the electrode of FIG. 4 is used. 2... Corneal junction, 4... Ring-shaped electrode, 7... Convex lens, 9... Light emitting diode.
Claims (1)
を設置した角膜接合部と、この角膜接合部の前
記凹面とは反対側に連設された本体部と、この
本体部に嵌設され前記角膜接合部に向かつて凸
な半球状の凸レンズと、この凸レンズの焦点付
近に嵌設された光源とからなることを特徴とす
る光源一体型コンタクトレンズ電極。 (2) 前記光源が半導体発光素子からなる実用新案
登録請求の範囲第項に記載の光源一体型コンタ
クトレンズ電極。 (3) 前記半導体発光素子が発光ダイオードである
実用新案登録請求の範囲第項に記載の光源一体
型コンタクトレンズ電極。[Claims for Utility Model Registration] (1) A corneal junction in which an electrode is installed on a concave surface to be joined to the corneal surface of a human eyeball, and a main body connected to the corneal junction on the opposite side of the concave surface. A contact lens electrode with an integrated light source, comprising: a hemispherical convex lens fitted into the main body and convex toward the corneal junction; and a light source fitted near the focal point of the convex lens. (2) The light source-integrated contact lens electrode according to claim 1, wherein the light source is a semiconductor light emitting device. (3) The light source integrated contact lens electrode according to claim 1, wherein the semiconductor light emitting element is a light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987027648U JPH0323206Y2 (en) | 1987-02-25 | 1987-02-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987027648U JPH0323206Y2 (en) | 1987-02-25 | 1987-02-25 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63135605U JPS63135605U (en) | 1988-09-06 |
| JPH0323206Y2 true JPH0323206Y2 (en) | 1991-05-21 |
Family
ID=30829878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987027648U Expired JPH0323206Y2 (en) | 1987-02-25 | 1987-02-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0323206Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4416695B2 (en) * | 2005-05-17 | 2010-02-17 | 有限会社メイヨー | Cornea electrode for retinal electrometer |
-
1987
- 1987-02-25 JP JP1987027648U patent/JPH0323206Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS63135605U (en) | 1988-09-06 |
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