JPS5977833A - Apparatus for measuring maximum and minimum eye pressures - Google Patents
Apparatus for measuring maximum and minimum eye pressuresInfo
- Publication number
- JPS5977833A JPS5977833A JP57188142A JP18814282A JPS5977833A JP S5977833 A JPS5977833 A JP S5977833A JP 57188142 A JP57188142 A JP 57188142A JP 18814282 A JP18814282 A JP 18814282A JP S5977833 A JPS5977833 A JP S5977833A
- Authority
- JP
- Japan
- Prior art keywords
- intraocular pressure
- maximum
- pulse wave
- highest
- light
- 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
Landscapes
- Eye Examination Apparatus (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は眼圧の最高値、最低値を正確に測定するだめの
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for accurately measuring the maximum and minimum values of intraocular pressure.
角膜に当接する空気圧が高まるにつれて光検出器に感受
される光計が増加し、角膜が圧平されて丁度平面鏡のよ
うに働き光検出器には最大の光量が到達しその時点まで
の時間を計測して眼圧値を換算表示する技術は広く行わ
れている。As the air pressure in contact with the cornea increases, the amount of light detected by the photodetector increases, and the cornea is applanated, acting just like a plane mirror, until the maximum amount of light reaches the photodetector, and the time up to that point increases. Techniques for measuring and converting and displaying intraocular pressure values are widely used.
本出願人はさきに特開昭５６−１０４６４０号全もって
１軸心方向から角＋ｒ＜に照射した赤外線の反射光を光
電素子で受光せしめて得られる受光前信号値を、角膜頂
点が軸心に一致した場合の光電素子の受光量に相当する
設定受光量信号値と比較して行うエアーパルス発射手段
を開示しているが、本発明は、エアーパルスの発射及び
赤外線照射を、概ね脈波の酸高部及び最低部においてな
すよう構成される眼圧測定装置を提供するものである。The present applicant previously disclosed in Japanese Patent Application Laid-Open No. 56-104640 that the corneal apex is the axial center of the corneal apex, which is obtained by receiving the reflected infrared light irradiated at an angle +r from one axis with a photoelectric element. The present invention discloses an air pulse emitting means that performs a comparison with a set received light amount signal value corresponding to the received light amount of the photoelectric element when the amount matches the amount of light received by the photoelectric element. The present invention provides an intraocular pressure measuring device configured to measure the intraocular pressure at the highest and lowest acid levels.
脈波と眼圧との間には相関関係がある。即ち心電計、指
尖脈波計等により測定される脈波の最高部又は最低部は
、測定部位によシ多少の遅延時間（０〜０．１秒イ呈匣
）が推定されるが該時間金調修することは可能であるた
め、実質的に眼圧の最高値又は最低値に殆んど同期せし
めうるものである。There is a correlation between pulse waves and intraocular pressure. In other words, it is estimated that there is some delay time (0 to 0.1 seconds) depending on the measurement site for the highest or lowest part of the pulse wave measured by an electrocardiograph, fingertip plethysmograph, etc. Since it is possible to adjust the time, it is possible to substantially synchronize with the maximum or minimum value of the intraocular pressure.
従って、脈波の最高部又は最［１，部に同期して角膜の
表面に対し自動的にエアーパルスを発射し、また、赤外
ｗを照射するならば、次第に圧平の度合が大となシ遂に
は平面鏡状になって最大の反射光量が検出され眼圧の最
高値又は最低値が測定・表示されることになシ又はプリ
ンターに記録されるに至るものである。Therefore, if air pulses are automatically emitted to the corneal surface in synchronization with the highest or lowest part of the pulse wave, and if infrared light is irradiated, the degree of applanation will gradually increase. Eventually, it will become like a plane mirror and the maximum amount of reflected light will be detected, and the maximum or minimum value of the intraocular pressure will be measured and displayed or recorded on a printer.
以下図面を参照し実施例に基づいて本発明全説明する。The present invention will be fully explained below based on embodiments with reference to the drawings.
第１図において、１は被検者の角膜表面を、また、２は
１黄者の眼、Ｓは軸心を示す。また、３はステンレスス
チール襄のシリンダで４はピストンである。ソレノイド
５に通電されるとピストン４が図で斜上方に動き、シリ
ンダ３内の圧力が高まってシリンダ３内の空気が対物レ
ンズ６の中心にあるノズルを抜は被検者の角膜表面１に
エアーパルスとして噴射されるようになっている。In FIG. 1, 1 indicates the subject's corneal surface, 2 indicates the yellow person's eye, and S indicates the axis. Further, 3 is a cylinder made of stainless steel, and 4 is a piston. When the solenoid 5 is energized, the piston 4 moves diagonally upward in the figure, the pressure inside the cylinder 3 increases, and the air inside the cylinder 3 is forced out of the nozzle at the center of the objective lens 6 and onto the corneal surface 1 of the subject. It is designed to be injected as an air pulse.
この装置では、角Ｊ漠表面にエアーパルスが発射される
ことによシ角膜が逐仄平らにされるが、この発射から完
全な圧平までの時間によシ眼圧が測定される。この時間
を測定するためには赤外線を発射することによシ可能で
ある。即ち、発光ダイオード７から発射される赤外線は
ミラー８及びビームスグリツタ９で反射されて対物レン
ズ６によって角膜表面１に集光するが、該角膜表面で反
射されて再び対物レンズ６を通）ビームスシリツタ９及
びテレスコーグレンズ１０をとおシ、ダイクロイックは
う１１で反射されて反射光を検知する光電素子１２に入
射するとともに一部はダイクロイックミラ１１をとおシ
検者の眼２に達する。そして、上記の赤外線の反射光の
光景は角膜着面１にあたる窒気圧が高まるにつれて次第
に増加し角膜が圧平された瞬間平面鏡として働き光！素
子１２に達する光量は最大となる。エアーパルスの発射
。In this device, the cornea is gradually flattened by emitting air pulses to the corneal surface, and the intraocular pressure is measured during the time from the ejection to complete applanation. This time can be measured by emitting infrared radiation. That is, the infrared rays emitted from the light emitting diode 7 are reflected by the mirror 8 and the beam sifter 9, and are focused on the corneal surface 1 by the objective lens 6. The light passes through the shutter 9 and the telescope lens 10, is reflected by the dichroic lens 11, and enters the photoelectric element 12 that detects the reflected light, and a portion of the light passes through the dichroic mirror 11 and reaches the eye 2 of the examiner. The above scene of reflected infrared light gradually increases as the nitrogen pressure on the corneal attachment surface 1 increases, and the moment the cornea is applanated, it acts as a plane mirror! The amount of light reaching the element 12 is maximum. Air pulse firing.
と同時釦なされる赤外線の照射から上記の最大光量に達
するまでの時間を計測し常法に基づき解析器１３によシ
眼圧値が求められ、プリンター１４に記録される。The time from the irradiation of infrared rays, which is pressed at the same time as the above button, to the time when the above-mentioned maximum amount of light is reached is measured, and the intraocular pressure value is determined by the analyzer 13 based on a conventional method, and is recorded on the printer 14.
次に本発明における最も重要な部分である脈波測定装置
による脈波の最高部及び最低部に概ね同期してエアーパ
ルスが発射され、また、赤外線が照射される構成につい
て説明する。Next, a configuration will be described in which the pulse wave measuring device, which is the most important part of the present invention, emits air pulses and irradiates infrared rays in approximately synchronization with the highest and lowest parts of the pulse wave.
上記の如く、赤外線を発射する発光ダイオード７と、エ
アーノぐルスを発射する動力となるソレノイド５とが存
在するが、このふたつは同時に機能するとともに、脈波
測定装［１５で計測される脈波の最高部又は最低部に基
づ龜、これらに概ね同期して動作せしめる制御器１６を
有してな凱さらに、脈波の最高部又は最低部がその測定
部位例えば心臓と１ｄ尖とでは眼圧の最高値又は最低値
の出現との間に若干の時間のずれがあることをも考慮し
て脈波の最高部、最低部と眼圧の最高値又は最低値が＋
ｉＪ能な限シ同期せしめられるよう調整するための調節
器１７が設けられている。調整は連層０． ｉ秒以内で
行われている。As mentioned above, there is a light emitting diode 7 that emits infrared rays and a solenoid 5 that is the power to emit the air nozzle, but these two function simultaneously and the pulse wave measured by the pulse wave measuring device [15]. Furthermore, the controller 16 operates in approximately synchronization with the highest or lowest part of the pulse wave. Considering that there is a slight time lag between the appearance of the highest or lowest pressure, the highest or lowest part of the pulse wave and the highest or lowest value of intraocular pressure are +
A regulator 17 is provided for adjusting the maximum synchronization. Adjustment is continuous 0. This is done within i seconds.
本発明は以上の如き構成に基づいてなされたものであっ
て、得られる眼圧値が脈波に概ね同期して膚に＠篩匝又
は最低値が記録されることとなるので、従来どの時点で
Ｕｉ定されたかが不明であるため最高・最低両値の間に
かなシの差があるにも拘らず表示された数字によっては
１診のおそｎ等もあったものが、本装置ｇによれば極め
て正確に眼圧１１ｉ ｋ ｆ）ＩＩＪ定しうろこととな
りその有用性が大である。The present invention has been made based on the above-described configuration, and since the obtained intraocular pressure value is recorded at the lowest value on the skin in approximately synchronization with the pulse wave, it is possible to Because it is unclear whether the Ui was determined by the device, even though there is a slight difference between the highest and lowest values, depending on the number displayed, it may have been possible to do so after one consultation. In this case, the intraocular pressure (11i k f) IIJ can be determined extremely accurately, and its usefulness is great.
第１図は本発明装置を示す説明図である。
１・・・被検者の角膜表面、２・・・検者の目、３・・
・シリンダ、４・・・ピストン、５・・・ソレノイド、
６・・・対物レンズ、７・・・発光ダイオード、８・・
・ミラー、９・・・ビームスプリッタ、１０・・・テレ
スコーゾレンズ、１１・・・ダイクロイックミラ、１２
・・・光電素子、１３・・・解析器、１４・・・プリン
ター、１５・・・脈波測定装置、１６・・・制御器、１
７・・・調節器。
特許出願人 持田製薬株式会社FIG. 1 is an explanatory diagram showing the apparatus of the present invention. 1... Subject's corneal surface, 2... Examiner's eyes, 3...
・Cylinder, 4... Piston, 5... Solenoid,
6...Objective lens, 7...Light emitting diode, 8...
・Mirror, 9... Beam splitter, 10... Telescoso lens, 11... Dichroic mirror, 12
... Photoelectric element, 13 ... Analyzer, 14 ... Printer, 15 ... Pulse wave measuring device, 16 ... Controller, 1
7...Adjuster. Patent applicant Mochida Pharmaceutical Co., Ltd.
Claims (1)
照射される赤外線の反射光の光量が最大になるまでの時
間を計測して眼圧値を測定する装置において、別に設け
られる脈波測定装置による脈波の最高部及び最低部に概
ね同期して角膜表面に対しエアーパルスが発射され、か
つ、赤外線照射が開始されて、脈波の鏝高部又は最低部
に概ね同Ｉｔ、１１する眼圧の最高値又は最低値が夫々
測定・表示され又はプリンターに記録されるように構成
されることを特徴とする最高最低眼圧測定装置。A device that measures intraocular pressure by blowing air pulses onto the surface of the cornea and measuring the time until the amount of reflected infrared light irradiated on the surface reaches its maximum, using a separately provided pulse wave measuring device. An air pulse is emitted to the corneal surface approximately in synchronization with the highest and lowest parts of the pulse wave, and infrared irradiation is started, so that the intraocular pressure reaches approximately the same It, 11 at the highest or lowest part of the pulse wave. 1. A maximum and minimum intraocular pressure measuring device characterized in that the maximum and minimum values of the intraocular pressure are respectively measured and displayed or recorded on a printer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57188142A JPS5977833A (en) | 1982-10-28 | 1982-10-28 | Apparatus for measuring maximum and minimum eye pressures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57188142A JPS5977833A (en) | 1982-10-28 | 1982-10-28 | Apparatus for measuring maximum and minimum eye pressures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5977833A true JPS5977833A (en) | 1984-05-04 |
Family
ID=16218476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57188142A Pending JPS5977833A (en) | 1982-10-28 | 1982-10-28 | Apparatus for measuring maximum and minimum eye pressures |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5977833A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62290438A (en) * | 1986-06-09 | 1987-12-17 | キヤノン株式会社 | Tonometer |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4917476A (en) * | 1972-06-05 | 1974-02-15 |
-
1982
- 1982-10-28 JP JP57188142A patent/JPS5977833A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4917476A (en) * | 1972-06-05 | 1974-02-15 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62290438A (en) * | 1986-06-09 | 1987-12-17 | キヤノン株式会社 | Tonometer |
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