JPS6216090B2 - - Google Patents
Info
- Publication number
- JPS6216090B2 JPS6216090B2 JP56175059A JP17505981A JPS6216090B2 JP S6216090 B2 JPS6216090 B2 JP S6216090B2 JP 56175059 A JP56175059 A JP 56175059A JP 17505981 A JP17505981 A JP 17505981A JP S6216090 B2 JPS6216090 B2 JP S6216090B2
- Authority
- JP
- Japan
- Prior art keywords
- fundus
- image
- electroretinogram
- lens
- optical system
- 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
- 230000003287 optical effect Effects 0.000 claims description 26
- 238000003745 diagnosis Methods 0.000 claims description 10
- 230000000638 stimulation Effects 0.000 claims description 6
- 210000001508 eye Anatomy 0.000 description 14
- 238000005286 illumination Methods 0.000 description 9
- 229910052736 halogen Inorganic materials 0.000 description 8
- 150000002367 halogens Chemical class 0.000 description 8
- 229910052724 xenon Inorganic materials 0.000 description 8
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 8
- 238000003384 imaging method Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 210000004087 cornea Anatomy 0.000 description 3
- 210000001747 pupil Anatomy 0.000 description 2
- 210000005252 bulbus oculi Anatomy 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000013307 optical fiber Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
Landscapes
- Eye Examination Apparatus (AREA)
Description
【発明の詳細な説明】
本発明は、電気生理学的診断法が可能な眼底カ
メラに関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fundus camera capable of electrophysiological diagnosis.
眼底カメラによる眼底像と、眼球の網膜電図と
は生理学的に相当な関係があるにも拘らず、従来
はそれぞれ独立した検出装置により異なる時点で
測定・観察されている。 Although there is a physiologically significant relationship between the fundus image obtained by a fundus camera and the electroretinogram of the eyeball, conventionally they have been measured and observed at different times using independent detection devices.
本発明の目的は、これらの２つの情報を同時に
検出し、同一の記録媒体に記録することにより、
眼底像と網模電図とを容易に対応させ、生理学的
な診断を適確になし得る電気生理学的診断法が可
能な眼底カメラを提供することにあり、その要旨
は、撮影用光源からの光照射による眼底像を画像
記録媒体に投影する眼底像撮影光学系と、前記撮
影用光源からの被検眼眼底への光刺激により得ら
れる電気的情報を網膜電図として表示する手段
と、該表示手段により表示された網膜電図を前記
眼底像と共に前記画像記録媒体に記録するよう
に、前記眼底像投影光学系中に投影する投影光学
系とを備えたことを特徴とするものである。 The purpose of the present invention is to simultaneously detect these two pieces of information and record them on the same recording medium.
The object of the present invention is to provide a fundus camera capable of electrophysiological diagnosis, which allows the fundus image and the electroretinal image to correspond easily, and enables accurate physiological diagnosis. a fundus image photographing optical system that projects a fundus image by light irradiation onto an image recording medium; a means for displaying electrical information obtained by optical stimulation of the fundus of the subject's eye from the photographing light source as an electroretinogram; and the display. The apparatus is characterized by comprising a projection optical system that projects into the fundus image projection optical system so that the electroretinogram displayed by the means is recorded on the image recording medium together with the fundus image.
本発明を図示の実施例に基づいて詳細に説明す
る。 The present invention will be explained in detail based on illustrated embodiments.
第１図ａ，ｂは本発明に係る電気生理学的診断
法が可能な眼底カメラの原理的な説明図を示し、
被検眼Ｅの直前に置かれた眼底カメラには、被検
眼Ｅの側から順次に光軸に沿つて対物レンズ１、
有孔鏡２、撮影用絞り３、フオーカシングレンズ
４、結像レンズ５及びクイツクリターンミラー６
が配置されている。第１図に示すように下降して
いるクイツクリターンミラー６の反射側には、コ
ンデンサレンズ７、光路曲折用ミラー８及び接眼
レンズ９が配置され、観察者ｅはこの接眼レンズ
９を覗き込んで被検眼Ｅ内の眼底Ｅfを確察し得
るようになつている。一方、有孔鏡２には観察用
照明であるハロゲンランプ１０或いは撮影用照明
であるキセノン管１１からの照明が入射し、被検
眼Ｅ内を照明するようになされている。この眼底
照明光学系はハロゲンランプ１０側から有孔鏡２
に向つて順次にコンデンサレンズ１２、キセノン
管１１、別のコンデンサレンズ１３、円環状スリ
ツト板１４、光路曲折用ミラー１５が配置され、
ハロゲンランプ１０或いはキセノン管１１からの
照明光は、このミラー１５で屈曲されてフイルタ
１６、絞り１７、リレーレンズ１８を介して前記
有孔鏡２に入射される。尚、ハロゲンランプ１０
は暗順応状態を作るために適宜発光を停止し得る
ようになつている。又、絞り１７は前記視度調節
用のフオーカシングレンズ４と連動して光軸方向
へ移動し、常に眼底と共役に維持されることとは
別に、装置の外部から開口径を変えられると共に
光軸に垂直な面内で移動可能にして、眼底Ｅfの
視野を可変、或いは光刺激の範囲を変更できるよ
うになつている。更にスリツト板１４は、角膜Ｅ
cの反射を除去するために、第１図ｂに示すリン
グスリツト１４ａを有し、中継する光学系を介し
て被検眼Ｅの瞳孔と共役な基準位置に配置され、
ハロゲンランプ１０とキセノン管１１の放射光は
コンデンサレンズ１２，１３によつてスリツト板
１４上に一旦集光される。又、フイルタ１６は必
要に応じて照明光学系に挿入され、各種色フイル
タ或いはバンドパスフイルタを用いることによ
り、被検眼Ｅに任意のスペクトル刺激を与えるこ
とができる。 FIGS. 1a and 1b show the principle explanatory diagram of a fundus camera capable of electrophysiological diagnosis according to the present invention,
The fundus camera placed just in front of the eye E is equipped with an objective lens 1,
Perforated mirror 2, photographic aperture 3, focusing lens 4, imaging lens 5, and quick return mirror 6
is located. As shown in FIG. 1, a condenser lens 7, an optical path bending mirror 8, and an eyepiece 9 are arranged on the reflection side of the quick return mirror 6, which is descending, and the observer e looks into this eyepiece 9. It is now possible to confirm the fundus E f in the eye E to be examined. On the other hand, illumination from a halogen lamp 10 serving as observation illumination or a xenon tube 11 serving as photography illumination enters the perforated mirror 2 to illuminate the inside of the eye E to be examined. This fundus illumination optical system starts from the halogen lamp 10 side with the perforated mirror 2.
A condenser lens 12, a xenon tube 11, another condenser lens 13, an annular slit plate 14, and an optical path bending mirror 15 are arranged in order toward the
Illumination light from a halogen lamp 10 or a xenon tube 11 is bent by this mirror 15 and enters the perforated mirror 2 via a filter 16, an aperture 17, and a relay lens 18. In addition, halogen lamp 10
is designed to be able to stop emitting light as appropriate to create a dark-adapted state. The diaphragm 17 moves in the optical axis direction in conjunction with the focusing lens 4 for adjusting the diopter, and apart from being always maintained conjugate with the fundus, the aperture diameter can be changed from outside the device. By making it movable in a plane perpendicular to the optical axis, the field of view of the fundus E f or the range of optical stimulation can be changed. Furthermore, the slit plate 14
In order to eliminate the reflection of c , a ring slit 14a shown in FIG.
The emitted light from the halogen lamp 10 and the xenon tube 11 is once condensed onto a slit plate 14 by condenser lenses 12 and 13. Further, the filter 16 is inserted into the illumination optical system as necessary, and by using various color filters or bandpass filters, it is possible to apply arbitrary spectral stimulation to the eye E to be examined.
又、被検眼Ｅの角膜Ｅcには、金属輪から成る
第１の電極１９を内面に埋設したコンタクトレン
ズ２０を張付け得るようになつており、皮膚に張
付けた第２の電極２１との間のキセノン管１１か
らの光刺激による電位差を、増幅器２２により増
幅しオシロスコープ２３に画像化して表示するよ
うになつている。 Further, a contact lens 20 having a first electrode 19 made of a metal ring embedded in the inner surface can be attached to the cornea E c of the eye E to be examined, and a contact lens 20 is attached to the cornea E c of the eye E to be examined. The potential difference caused by optical stimulation from the xenon tube 11 is amplified by an amplifier 22 and displayed as an image on an oscilloscope 23.
被検眼Ｅに装着された正のパワーのコンタクト
レンズ２０の作用によつて、光学的な瞳の位置が
移動するために、これに対処してスリツト板１４
のみ或いはそれより光源側の光学系と共にその光
軸に沿つてミラー１５方向に移動する。又、眼底
Ｅfの中間像が形成される正常眼の結像位置もこ
れに伴つて移動するので、フオーカシングレンズ
４の焦点範囲をそれに応じて変位させるか、位置
保償用の負レンズを絞り３とフオーカシングレン
ズ４との間に挿入して焦点合せをした後にハロゲ
ンランプ１０を点灯すると、ランプ１０から発光
された光はスリツト板１４のリングスリツト１４
ａを照射し、リレーレンズ１８で結像作用を受
け、有孔鏡２で反射し一旦リングスリツト１４ａ
の明像が形成される。更に照明光は対物レンズ１
により瞳孔上に結像し眼底Ｅfを照明する。この
場合コンタクトレンズ２０が存在すると、照明光
は広画角に眼底Ｅfを照明することになる。次に
眼底Ｅfを発した眼底像情報を有する光束は被検
眼Ｅから射出する際に、コンタクトレンズ２０で
収斂屈折され、対物レンズ１によつて対物レンズ
１と有孔鏡２との中間点に像Ｅf１が中間結像さ
れる。この中間像Ｅf１を形成した光束は、更に
絞り３により絞られ、フオーカシングレンズ４を
通り結像レンズ５により結像される。この像はク
イツクリターンミラー６、コンデンサレンズ７、
光路曲折用ミラー８及び接眼レンズ９を介して観
察者ｅにより目視される。 Because the optical position of the pupil moves due to the action of the positive power contact lens 20 attached to the eye E, the slit plate 14 is adjusted to accommodate this movement.
The mirror 15 moves along its optical axis either alone or together with an optical system closer to the light source. In addition, since the imaging position of the normal eye, where the intermediate image of the fundus E f is formed, also moves accordingly, the focal range of the focusing lens 4 must be changed accordingly, or a negative lens for position guarantee may be used. When the halogen lamp 10 is turned on after being inserted between the aperture 3 and the focusing lens 4 for focusing, the light emitted from the lamp 10 passes through the ring slit 14 of the slit plate 14.
a is irradiated, subjected to an imaging action by the relay lens 18, reflected by the perforated mirror 2, and once passed through the ring slit 14a.
A clear image is formed. Furthermore, the illumination light is from objective lens 1.
The image is formed on the pupil and illuminates the fundus E f . In this case, if the contact lens 20 is present, the illumination light will illuminate the fundus E f with a wide angle of view. Next, the light beam having fundus image information emitted from the fundus E f is convergently refracted by the contact lens 20 when exiting from the eye E to be examined, and is directed by the objective lens 1 to the midpoint between the objective lens 1 and the perforated mirror 2. An image E f 1 is formed as an intermediate image. The light beam that has formed this intermediate image E f 1 is further narrowed down by an aperture 3 , passes through a focusing lens 4 , and is imaged by an imaging lens 5 . This image consists of a quick return mirror 6, a condenser lens 7,
It is visually observed by the observer e via the optical path bending mirror 8 and the eyepiece lens 9.
又、ハロゲンランプ１０の代りにキセノン管１
１を瞬間的に点灯し、クイツクリターンミラー６
を上昇し光路外に退去させると、眼底像はクイツ
クリターンミラー６の背後に像Ｅf２として結像
され、撮影フイルム２４に露光される。一方、オ
シロスコープ２３の画面には、キセノン管１１の
フラツシユ光に基づく光刺激による角膜Ｅcの電
位が第１、第２の電極１９，２１により検出さ
れ、この電位即ち網膜電図が映像されることにな
る。 Also, instead of the halogen lamp 10, a xenon tube 1 is used.
1 momentarily lights up, quick return mirror 6
When the fundus image is raised and moved out of the optical path, the fundus image is formed as an image E f 2 behind the quick return mirror 6, and is exposed onto the photographic film 24. On the other hand, on the screen of the oscilloscope 23, the potential of the cornea E c due to optical stimulation based on the flash light of the xenon tube 11 is detected by the first and second electrodes 19 and 21, and this potential, that is, the electroretinogram is imaged. It turns out.
第２図は本発明に係る眼底カメラの構成図であ
り、第１図と同一の符号は同一の部分、部材を示
しており、第１図に於ける照明光学系は図面上省
略されている。但し、１７′は所望形状、例えば
半円形或いは複数の開口を備えるマスクであり、
交換着脱が可能であると共に、挿着した状態でフ
オーカシングレンズ４と連動して光軸方向に移動
し、又光軸に垂直な面内で変位可能となつてい
る。クイツクリターンミラー６の背後には、即時
現像用カメラ２５が配置されており、このカメラ
２５はフイールドレンズ２６、撮影レンズ２７、
即時現像フイルム２８を有している。一方、電極
１９，２１により得られた網膜電図像は第１図の
オシロスコープ２３の代りにテレビジヨン用のブ
ラウン管２９により画像化され、投影レンズ３０
及び反射ミラー３１を介して前記カメラ２５に投
影されるようになつている。 FIG. 2 is a configuration diagram of the fundus camera according to the present invention, and the same reference numerals as in FIG. 1 indicate the same parts and members, and the illumination optical system in FIG. 1 is omitted in the drawing. . However, 17' is a mask having a desired shape, such as a semicircle or a plurality of openings,
It can be replaced and removed, and when inserted, it can move in the optical axis direction in conjunction with the focusing lens 4, and can also be displaced in a plane perpendicular to the optical axis. An instant development camera 25 is arranged behind the quick return mirror 6, and this camera 25 includes a field lens 26, a photographic lens 27,
It has an instant development film 28. On the other hand, the electroretinogram obtained by the electrodes 19 and 21 is converted into an image by a television cathode ray tube 29 instead of the oscilloscope 23 in FIG.
and is projected onto the camera 25 via the reflecting mirror 31.
従つてカメラ２５の１枚の即時現像フイルム２
８には、第３図ａ，ｂに示すような眼底像３２と
網膜電図像３３とが写し込まれることになり、直
ちに画像化され、眼底疾患等の診断が迅速にしか
も極めて適確になし得ることになる。 Therefore, one instant development film 2 of the camera 25
8, a fundus image 32 and an electroretinogram 33 as shown in FIGS. 3a and 3b are imprinted, and are immediately converted into images, allowing diagnosis of fundus diseases etc. to be made quickly and extremely accurately. You will get it.
前述の実施例に於いては、コンタクトレンズ２
０を被着した被検眼Ｅを対称としているが、コン
タクトレンズ２０を外した裸眼であつても撮像に
は何ら支障はない。又、画像記録媒体として即時
現像フイルム用のカメラ２５を使用しているが、
通常のフイルムを使用するものであつても勿論問
題はないし、VTRを用いてもよい。更にはカメ
ラ２５への両画像の投影は主光軸外へ反射ミラー
で曲折して写し込むことも可能であり、画像の伝
達は光フアイバを用いてもよい。網膜電図の画像
化はブラウン管２９の代りに、液晶TVのような
薄板式のものを用いて小型化を図ることも可能で
あり、又対物レンズ１の鏡筒を延長した先にコン
タクトレンズを固設し、このコンタクトレンズを
含めて新たな対物レンズを構成してもよい。 In the above embodiment, the contact lens 2
Although the subject's eye E, which is covered with a lens 0, is the subject's eye, there is no problem in imaging even if the contact lens 20 is removed and the naked eye is used. Also, a camera 25 for instant development film is used as the image recording medium;
Of course, there is no problem in using ordinary film, and a VTR may also be used. Furthermore, both images can be projected onto the camera 25 by bending them off the main optical axis using a reflecting mirror, and an optical fiber may be used to transmit the images. Electroretinogram imaging can be miniaturized by using a thin plate type device such as a liquid crystal TV instead of the cathode ray tube 29, or by attaching a contact lens to the end of the lens barrel of the objective lens 1. A new objective lens may be constructed including this contact lens by attaching it permanently.
以上説明したように本発明に係る電気生理学的
診断法が可能な眼底カメラは、従来独立して得ら
れていた眼底像と網膜電図とが１個の記録媒体に
同一時点での出力として対応づけて記録すること
ができるので診断上、整理上大きな利点がある。 As explained above, the fundus camera capable of performing the electrophysiological diagnosis method according to the present invention is capable of outputting fundus images and electroretinograms, which were conventionally obtained independently, onto a single recording medium at the same time. This has great advantages in terms of diagnosis and organization because it can be recorded together.
第１図は本発明の原理の説明図、第２図は本発
明に係る眼底カメラの構成図、第３図は本発明の
眼底カメラで得られたフイルム画像である。
符号１は対物レンズ、２は有孔鏡、３は絞り、
４はフオーカシングレンズ、６はクイツクリター
ンミラー、１０はハロゲンランプ、１１はキセノ
ン管、１４はスリツト板、１７は絞り、２０はコ
ンタクトレンズ、２５はカメラ、２８は即時現像
フイルム、２９はブラウン管、３０は投影レン
ズ、Ｅは被検眼、Ｅfは眼底である。
FIG. 1 is an explanatory diagram of the principle of the present invention, FIG. 2 is a configuration diagram of a fundus camera according to the present invention, and FIG. 3 is a film image obtained with the fundus camera of the present invention. 1 is an objective lens, 2 is a perforated mirror, 3 is an aperture,
4 is a focusing lens, 6 is a quick return mirror, 10 is a halogen lamp, 11 is a xenon tube, 14 is a slit plate, 17 is an aperture, 20 is a contact lens, 25 is a camera, 28 is an instant development film, 29 is A cathode ray tube, 30 a projection lens, E the eye to be examined, and E f the fundus.
Claims (1)
記録媒体に投影する眼底像撮影光学系と、前記撮
影用光源からの被検眼眼底への光刺激により得ら
れる電気的情報を網膜電図として表示する手段
と、該表示手段により表示された網膜電図を前記
眼底像と共に前記画像記録媒体に記録するよう
に、前記眼底像投影光学系中に投影する投影光学
系とを備えたことを特徴とする電気生理学的診断
法が可能な眼底カメラ。 ２ 前記画像記録媒体をフイルムとする特許請求
の範囲第１項に記載の電気生理学的診断法が可能
な眼底カメラ。 ３ 前記網膜電図はパワーを持つたコンタクトレ
ンズに付設した電極から電気的情報を得て画像化
するようにした特許請求範囲第１項に記載の電気
生理学的診断法が可能な眼底カメラ。[Scope of Claims] 1. A fundus image photographing optical system that projects a fundus image onto an image recording medium by light irradiation from a photographing light source, and electrical information obtained by optical stimulation of the fundus of the subject's eye from the photographing light source. means for displaying the electroretinogram as an electroretinogram; and a projection optical system for projecting the electroretinogram displayed by the display means into the fundus image projection optical system so as to record the electroretinogram together with the fundus image on the image recording medium. A fundus camera capable of electrophysiological diagnosis. 2. A fundus camera capable of electrophysiological diagnosis according to claim 1, wherein the image recording medium is a film. 3. A fundus camera capable of electrophysiological diagnosis according to claim 1, wherein the electroretinogram is obtained by obtaining electrical information from an electrode attached to a powerful contact lens and converting the image into an image.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56175059A JPS5875533A (en) | 1981-10-31 | 1981-10-31 | Eye bottom camera for electrophysiological diagnosis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56175059A JPS5875533A (en) | 1981-10-31 | 1981-10-31 | Eye bottom camera for electrophysiological diagnosis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5875533A JPS5875533A (en) | 1983-05-07 |
| JPS6216090B2 true JPS6216090B2 (en) | 1987-04-10 |
Family
ID=15989507
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56175059A Granted JPS5875533A (en) | 1981-10-31 | 1981-10-31 | Eye bottom camera for electrophysiological diagnosis |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5875533A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0243786U (en) * | 1988-09-20 | 1990-03-26 | ||
| JPH0547030Y2 (en) * | 1986-02-26 | 1993-12-09 | ||
| EP2108308A1 (en) | 2008-04-10 | 2009-10-14 | Kowa Company Ltd. | Ocular light stimulus apparatus |
| US11613854B2 (en) | 2019-05-24 | 2023-03-28 | Tri Mor Corporation | Concrete texturing devices and methods |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63109838A (en) * | 1986-10-25 | 1988-05-14 | キヤノン株式会社 | Ophthalmic examination machine |
| JPS63125237A (en) * | 1986-11-15 | 1988-05-28 | キヤノン株式会社 | Ophthalmic apparatus |
| JPS63109837A (en) * | 1986-10-25 | 1988-05-14 | キヤノン株式会社 | Ophthalmic examination machine |
| JP2930527B2 (en) * | 1994-09-05 | 1999-08-03 | キヤノン株式会社 | Ophthalmic examination device |
| US9872618B2 (en) | 2015-08-05 | 2018-01-23 | Phoenix Technology Group | Wide-field retinal imaging system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011678U (en) * | 1973-05-31 | 1975-02-06 | ||
| JPS5454493A (en) * | 1977-10-06 | 1979-04-28 | Canon Kk | Method of inspecting eyeground and its device |
-
1981
- 1981-10-31 JP JP56175059A patent/JPS5875533A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5011678U (en) * | 1973-05-31 | 1975-02-06 | ||
| JPS5454493A (en) * | 1977-10-06 | 1979-04-28 | Canon Kk | Method of inspecting eyeground and its device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0547030Y2 (en) * | 1986-02-26 | 1993-12-09 | ||
| JPH0243786U (en) * | 1988-09-20 | 1990-03-26 | ||
| EP2108308A1 (en) | 2008-04-10 | 2009-10-14 | Kowa Company Ltd. | Ocular light stimulus apparatus |
| US11613854B2 (en) | 2019-05-24 | 2023-03-28 | Tri Mor Corporation | Concrete texturing devices and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5875533A (en) | 1983-05-07 |
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