JP4397684B2 - 非接触式眼圧計 - Google Patents
非接触式眼圧計 Download PDFInfo
- Publication number
- JP4397684B2 JP4397684B2 JP2003424538A JP2003424538A JP4397684B2 JP 4397684 B2 JP4397684 B2 JP 4397684B2 JP 2003424538 A JP2003424538 A JP 2003424538A JP 2003424538 A JP2003424538 A JP 2003424538A JP 4397684 B2 JP4397684 B2 JP 4397684B2
- Authority
- JP
- Japan
- Prior art keywords
- cornea
- intraocular pressure
- corneal thickness
- tonometer
- airflow
- 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 - Lifetime
Links
- 210000004087 cornea Anatomy 0.000 claims description 82
- 230000004410 intraocular pressure Effects 0.000 claims description 75
- 238000005259 measurement Methods 0.000 claims description 45
- 238000001514 detection method Methods 0.000 claims description 44
- 238000006243 chemical reaction Methods 0.000 claims description 20
- 238000007664 blowing Methods 0.000 claims description 10
- 230000003287 optical effect Effects 0.000 description 57
- 239000007921 spray Substances 0.000 description 20
- 238000009530 blood pressure measurement Methods 0.000 description 13
- 239000005357 flat glass Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 3
- 206010067013 Normal tension glaucoma Diseases 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 201000002978 low tension glaucoma Diseases 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 206010002091 Anaesthesia Diseases 0.000 description 1
- 208000010412 Glaucoma Diseases 0.000 description 1
- 230000037005 anaesthesia Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004493 normal intraocular pressure Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Images
Landscapes
- Eye Examination Apparatus (AREA)
Description
C 角膜
12 気流吹付ノズル
20 XYアライメント指標投影光学系
40 XYアライメント検出光学系
50 角膜変形検出光学系
60 スリット投影光学系
72 ラインセンサ
74 角膜厚測定回路
80 制御回路
200 制御手段
300 眼圧測定手段
301 圧力センサ
302 吹付量検出手段
400 記憶手段
401 換算情報
500 眼圧値取得手段
Claims (2)
- 被検眼角膜に対して光束を投影し、その反射光を検知して被検眼の角膜厚を測定する角膜厚測定手段と、角膜に気流を吹き付けて角膜が所定の変形状態となったときの気流の圧力を検出する気流検出手段とを備える非接触式眼圧計であって、
前記気流検出手段により検出された前記気流の圧力と前記角膜厚測定手段により測定された角膜厚とに対応するゴールドマン圧平眼圧計による眼圧値を求める眼圧値取得手段を備えていることを特徴とする非接触式眼圧計。 - 角膜が前記所定の変形状態となった時点の気流の圧力と被検眼の角膜厚とに対応するゴールドマン圧平眼圧計による眼圧値をあらかじめ記録した換算情報を格納する記憶手段を更に備え、
前記眼圧値取得手段は、前記記憶手段に格納された前記換算情報を参照して、前記気流検出手段により検出された前記気流の圧力と前記角膜厚測定手段により測定された角膜厚とに対応するゴールドマン圧平眼圧計による眼圧値を求めることを特徴とする請求項1記載の非接触式眼圧計。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003424538A JP4397684B2 (ja) | 2003-12-22 | 2003-12-22 | 非接触式眼圧計 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003424538A JP4397684B2 (ja) | 2003-12-22 | 2003-12-22 | 非接触式眼圧計 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2005177252A JP2005177252A (ja) | 2005-07-07 |
JP4397684B2 true JP4397684B2 (ja) | 2010-01-13 |
Family
ID=34784705
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2003424538A Expired - Lifetime JP4397684B2 (ja) | 2003-12-22 | 2003-12-22 | 非接触式眼圧計 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP4397684B2 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009028287A (ja) * | 2007-07-27 | 2009-02-12 | Topcon Corp | 非接触型眼圧計 |
CN104490360B (zh) * | 2014-11-19 | 2016-02-10 | 上海市计量测试技术研究院 | 一种接触式压平眼压计的检定装置及方法 |
-
2003
- 2003-12-22 JP JP2003424538A patent/JP4397684B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JP2005177252A (ja) | 2005-07-07 |
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