JPS629331B2 - - Google Patents
Info
- Publication number
- JPS629331B2 JPS629331B2 JP56149058A JP14905881A JPS629331B2 JP S629331 B2 JPS629331 B2 JP S629331B2 JP 56149058 A JP56149058 A JP 56149058A JP 14905881 A JP14905881 A JP 14905881A JP S629331 B2 JPS629331 B2 JP S629331B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical lens
- cornea
- corneal
- shape
- index
- 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
- 210000004087 cornea Anatomy 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 22
- 238000005259 measurement Methods 0.000 claims description 19
- 201000009310 astigmatism Diseases 0.000 description 7
- 238000001514 detection method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000003384 imaging method Methods 0.000 description 3
- 238000005286 illumination Methods 0.000 description 2
- 201000000766 irregular astigmatism Diseases 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 230000002079 cooperative effect Effects 0.000 description 1
- 230000000875 corresponding effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012876 topography Methods 0.000 description 1
Landscapes
- Eye Examination Apparatus (AREA)
- Length Measuring Devices By Optical Means (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56149058A JPS5850937A (ja) | 1981-09-21 | 1981-09-21 | 角膜形状測定装置 |
| US06/734,234 US4660946A (en) | 1981-09-21 | 1985-05-14 | Cornea shape measuring method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56149058A JPS5850937A (ja) | 1981-09-21 | 1981-09-21 | 角膜形状測定装置 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5850937A JPS5850937A (ja) | 1983-03-25 |
| JPS629331B2 true JPS629331B2 (pt) | 1987-02-27 |
Family
ID=15466743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56149058A Granted JPS5850937A (ja) | 1981-09-21 | 1981-09-21 | 角膜形状測定装置 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5850937A (pt) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59214427A (ja) * | 1983-05-23 | 1984-12-04 | キヤノン株式会社 | 角膜形状測定装置 |
| JP2707249B2 (ja) * | 1987-03-06 | 1998-01-28 | キヤノン株式会社 | 角膜形状測定装置 |
| DE29913603U1 (de) * | 1999-08-04 | 1999-11-25 | Oculus Optikgeräte GmbH, 35582 Wetzlar | Spaltprojektor |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930957A (pt) * | 1972-07-20 | 1974-03-19 | ||
| JPS52135758A (en) * | 1976-05-10 | 1977-11-14 | Susumu Hashimoto | Circular scale observing device |
| JPS5618837A (en) * | 1979-07-23 | 1981-02-23 | Canon Kk | Keratometer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5714803Y2 (pt) * | 1973-05-22 | 1982-03-27 |
-
1981
- 1981-09-21 JP JP56149058A patent/JPS5850937A/ja active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4930957A (pt) * | 1972-07-20 | 1974-03-19 | ||
| JPS52135758A (en) * | 1976-05-10 | 1977-11-14 | Susumu Hashimoto | Circular scale observing device |
| JPS5618837A (en) * | 1979-07-23 | 1981-02-23 | Canon Kk | Keratometer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5850937A (ja) | 1983-03-25 |
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