JP5268053B2 - 眼球組織固有振動数測定装置及びそれを利用した非接触式眼圧計 - Google Patents
眼球組織固有振動数測定装置及びそれを利用した非接触式眼圧計 Download PDFInfo
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- JP5268053B2 JP5268053B2 JP2008128690A JP2008128690A JP5268053B2 JP 5268053 B2 JP5268053 B2 JP 5268053B2 JP 2008128690 A JP2008128690 A JP 2008128690A JP 2008128690 A JP2008128690 A JP 2008128690A JP 5268053 B2 JP5268053 B2 JP 5268053B2
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- 210000005252 bulbus oculi Anatomy 0.000 title claims description 61
- 210000004087 cornea Anatomy 0.000 claims description 91
- 230000004410 intraocular pressure Effects 0.000 claims description 50
- 210000001508 eye Anatomy 0.000 claims description 33
- 238000001514 detection method Methods 0.000 claims description 27
- 238000005507 spraying Methods 0.000 claims description 15
- 238000004088 simulation Methods 0.000 claims description 14
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 5
- 230000003287 optical effect Effects 0.000 description 38
- 238000005259 measurement Methods 0.000 description 32
- 210000001519 tissue Anatomy 0.000 description 28
- 238000009530 blood pressure measurement Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 238000007664 blowing Methods 0.000 description 9
- 210000003786 sclera Anatomy 0.000 description 7
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- 238000010586 diagram Methods 0.000 description 4
- 238000000691 measurement method Methods 0.000 description 4
- 208000010412 Glaucoma Diseases 0.000 description 3
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- 238000011161 development Methods 0.000 description 2
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- 238000007796 conventional method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
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- 239000004615 ingredient Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 210000003041 ligament Anatomy 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
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- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
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Images
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
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/16—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring intraocular pressure, e.g. tonometers
- A61B3/165—Non-contacting tonometers
-
- 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
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/16—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring intraocular pressure, e.g. tonometers
Description
図12、図13に示されるグラフは、前記測定系によって得られた正常な健康人眼の角膜の固有振動とゴールドマン圧平眼圧計(GAT)測定値及びダイナミック・カンター・トノメーター(DCT)測定値との相関関係を示すグラフである。
図14に示されるグラフは、前記測定系における豚眼の角膜変形の測定をレーザー変位センサによって行ったものである。高速度カメラによる角膜変形量測定装置300がレーザー変位センサによって代用可能であることが示されている。
E…被検眼
F…気流吹付
S…レーザー投影光若しくはレーザー反射光
L1、L2、L3、L4…ハーフミラー
100…前眼部観察装置
110…前眼部観察系
120…指標投影光学系
130…固視標投影光学系
140…XYアライメント検出光学系
160…Zアライメント指標投影光学系
170…Zアライメント検出光学系
180…眼圧測定系制御回路
200…気流吹付装置
201…吹付量検出部
202…圧力センサ
300…角膜変形量測定装置
301…変形量数値化装置
400…解析装置
500…角膜変形検出光学系
Claims (6)
- 被検眼の角膜に気流を吹き付けて角膜を変形させる気流吹き付け手段と、
前記気流吹き付け手段による角膜の変形を前記気流の吹き付け開始からの経過時間と共に計測する角膜変形量計測手段と、
前記角膜変形検出手段の求めた前記角膜変形量と経過時間との関係をフーリエ解析するフーリエ解析手段と、
前記フーリエ解析手段の求めたフーリエ解析結果に基づいて眼球の各構成組織の固有振動数を求める眼球組織固有振動数演算手段とを備えたことを特徴とする眼球組織固有振動数測定装置。 - 前記角膜変形量計測手段は、高速度カメラであることを特徴とする請求項1に記載の眼球組織固有振動数測定装置。
- 前記角膜変形量計測手段は、レーザー変位センサであることを特徴とする請求項1に記載の眼球組織固有振動数測定装置。
- 前記フーリエ解析手段は、眼球変形の数値シミュレーション結果を保持する数値シミュレーション結果保持手段と、前記フーリエ解析された時間の関数が眼球のどの組織の固有振動数と対応しているかをパターン分類するパターン分類手段とを備えたことを特徴とする請求項1〜3のいずれかに記載の眼球組織固有振動数測定装置。
- 前記眼球組織固有振動数演算手段は、前記眼球の角膜の固有振動数を求めることを特徴とする請求項4に記載の眼球組織固有振動数測定装置。
- 前記眼球組織固有振動数演算手段の求めた前記眼球の角膜の固有振動数に基づき、眼圧を演算する眼圧演算手段を備えたことを特徴とする請求項5に記載の眼球組織固有振動数測定装置を利用した非接触式眼圧計。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008128690A JP5268053B2 (ja) | 2008-05-15 | 2008-05-15 | 眼球組織固有振動数測定装置及びそれを利用した非接触式眼圧計 |
CA2724222A CA2724222C (en) | 2008-05-15 | 2009-05-14 | Eyeball tissue characteristic frequency measurement device and non-contact tonometer utilizing the same |
EP09746641A EP2294968A4 (en) | 2008-05-15 | 2009-05-14 | DEVICE FOR MEASURING THE CLEAN FREQUENCY OF OCULAR GLOBE TISSUE AND CONTACTLESS TONOMETER USING THE SAME |
US12/992,646 US8545404B2 (en) | 2008-05-15 | 2009-05-14 | Eyeball tissue characteristic frequency measurement device and non-contact tonometer utilizing the same |
PCT/JP2009/058977 WO2009139435A1 (ja) | 2008-05-15 | 2009-05-14 | 眼球組織固有振動数測定装置及びそれを利用した非接触式眼圧計 |
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JP2008128690A JP5268053B2 (ja) | 2008-05-15 | 2008-05-15 | 眼球組織固有振動数測定装置及びそれを利用した非接触式眼圧計 |
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JP2009273715A JP2009273715A (ja) | 2009-11-26 |
JP5268053B2 true JP5268053B2 (ja) | 2013-08-21 |
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Country Status (5)
Country | Link |
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US (1) | US8545404B2 (ja) |
EP (1) | EP2294968A4 (ja) |
JP (1) | JP5268053B2 (ja) |
CA (1) | CA2724222C (ja) |
WO (1) | WO2009139435A1 (ja) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202005002562U1 (de) * | 2005-02-16 | 2005-06-09 | Oculus Optikgeräte GmbH | Ophthalmisches Analysesystem zur Messung des intraocularen Drucks im Auge |
US8226235B2 (en) * | 2006-02-14 | 2012-07-24 | Vision Optimization, Llc | Method and apparatus for determining dynamic deformation characteristics of an object |
JP5677041B2 (ja) * | 2009-11-11 | 2015-02-25 | 株式会社ニデック | 眼科装置 |
US9320430B2 (en) * | 2010-03-31 | 2016-04-26 | Reichert, Inc. | Ophthalmic diagnostic instrument and method |
PL2397068T3 (pl) | 2010-06-21 | 2020-11-16 | Oculus Optikgeräte GmbH | Analiza ciśnienia wewnątrzgałkowego |
US9089295B2 (en) * | 2011-02-25 | 2015-07-28 | Canon Kabushiki Kaisha | Ophthalmic apparatus and storage medium |
WO2012134398A1 (en) * | 2011-03-30 | 2012-10-04 | Agency For Science, Technology And Research | A non-contact ultrasonic device, a non-contact ultrasonic system for determining an intraocular pressure of an eye and a method of determining an intraocular pressure of an eye |
DE102011076793A1 (de) * | 2011-05-31 | 2012-12-06 | Oculus Optikgeräte GmbH | Ophthalmologisches Analyseverfahren und Analysesystem |
WO2012163080A1 (en) * | 2011-06-03 | 2012-12-06 | The Hong Kong University Of Science And Technology | Non-destructive measurement of mechanical properties of an ellipsoidal shell |
US9277862B2 (en) * | 2011-08-18 | 2016-03-08 | Forus Health Pvt. Ltd. | Method and system to identify intraocular pressure (IOP) of an eye |
RU2485879C1 (ru) * | 2011-10-26 | 2013-06-27 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Профессионального Образования "Саратовский Государственный Университет Имени Н.Г. Чернышевского" | Способ измерения внутриглазного давления |
JP2014171722A (ja) * | 2013-03-11 | 2014-09-22 | Canon Inc | 非接触式眼科装置及びその制御方法 |
WO2016009334A1 (en) * | 2014-07-17 | 2016-01-21 | Bitoun Pierre | Measurement of ocular parameters using vibrations induced in the eye |
WO2016111646A1 (en) * | 2015-01-05 | 2016-07-14 | National University Of Singapore | In vivo corneal modeling |
US10394928B2 (en) * | 2015-03-17 | 2019-08-27 | National Taiwan University | Corneal dynamic model algorithm and system using the same |
TW201703722A (zh) * | 2015-07-21 | 2017-02-01 | 明達醫學科技股份有限公司 | 量測裝置及其運作方法 |
DE102018107622A1 (de) * | 2018-03-29 | 2019-10-02 | Imedos Systems GmbH | Vorrichtung und Verfahren zur Bestimmung retinaler Blutdruckwerte und zum Mapping retinaler Blutdruckwerte und Perfusionsdruckwerte |
FI128150B (en) | 2018-11-29 | 2019-11-15 | Photono Oy | A system and method for measuring intraocular pressure |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5251627A (en) * | 1991-06-27 | 1993-10-12 | Morris Donald E | Non-invasive measurement of eyeball pressure using vibration |
US5372030A (en) * | 1993-09-15 | 1994-12-13 | The University Of Georgia Research Foundation, Inc. | Non-destructive firmness measuring device |
JPH09103411A (ja) * | 1995-10-13 | 1997-04-22 | Canon Inc | 眼測定装置 |
JPH09327437A (ja) * | 1996-06-11 | 1997-12-22 | Topcon Corp | 眼科装置と眼科データ管理システム |
JP3886255B2 (ja) | 1998-06-12 | 2007-02-28 | 株式会社トプコン | 非接触式眼圧計 |
FR2814935B1 (fr) | 2000-10-10 | 2003-03-28 | Chru Lille | Procede et dipositif de detection des modes propres de vibration d'un oeil, par interferometrie laser, et leur application a la mesure de la pression intra-oculaire |
JP4709984B2 (ja) * | 2001-03-19 | 2011-06-29 | 学校法人日本大学 | 物質の特性測定方法、物質の特性測定装置 |
US6595920B2 (en) * | 2001-05-21 | 2003-07-22 | The Ohio State University | Non-contact instrument for measurement of internal optical pressure |
MXPA04009268A (es) | 2002-03-28 | 2005-05-17 | Eric Technologies Corp | Tonometro de retroalimentacion de fuerza. |
US7201720B2 (en) * | 2002-03-28 | 2007-04-10 | Oscar Cuzzani | Non-contacting tonometer |
JP2004267299A (ja) | 2003-03-05 | 2004-09-30 | Univ Nihon | 眼圧検査装置 |
US7871378B1 (en) * | 2004-12-22 | 2011-01-18 | Achevé Technology, Inc. | Device and method to measure corneal biomechanical properties and its application to intraocular pressure measurement |
JP4644842B2 (ja) | 2005-03-22 | 2011-03-09 | 国立大学法人広島大学 | 非接触式眼圧計 |
US7798962B2 (en) * | 2005-09-08 | 2010-09-21 | Reichert, Inc. | Method and apparatus for measuring corneal resistance |
US7481767B2 (en) | 2005-09-08 | 2009-01-27 | Reichert, Inc. | Method and apparatus for determining true intraocular pressure |
JP2007202734A (ja) | 2006-01-31 | 2007-08-16 | Kyocera Kinseki Corp | 圧力センサ |
DE102006017389A1 (de) * | 2006-04-11 | 2007-10-18 | Oculus Optikgeräte GmbH | Refraktionsmessvorrichtung zur Bestimmung der Refraktionseigenschaften eines Auges |
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- 2008-05-15 JP JP2008128690A patent/JP5268053B2/ja active Active
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2009
- 2009-05-14 US US12/992,646 patent/US8545404B2/en not_active Expired - Fee Related
- 2009-05-14 WO PCT/JP2009/058977 patent/WO2009139435A1/ja active Application Filing
- 2009-05-14 EP EP09746641A patent/EP2294968A4/en not_active Withdrawn
- 2009-05-14 CA CA2724222A patent/CA2724222C/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2009273715A (ja) | 2009-11-26 |
EP2294968A4 (en) | 2012-11-21 |
CA2724222C (en) | 2015-07-07 |
WO2009139435A1 (ja) | 2009-11-19 |
EP2294968A1 (en) | 2011-03-16 |
US8545404B2 (en) | 2013-10-01 |
CA2724222A1 (en) | 2009-11-19 |
US20110118585A1 (en) | 2011-05-19 |
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