Analysis of the Mechanism of the Delay Characteristics in Cornea Deformation for Non-contact Tonometry
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- KANEKO Makoto
- Graduate School of Engineering, Osaka University
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- KEMPF Roland
- Institut fur Automatisierungstechnik
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- KURITA Yuichi
- Graduate School of Engineering, Hiroshima University
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- IIDA Yoshichika
- Graduate School of Engineering, Hiroshima University
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- OKUDE Jumpei
- Graduate School of Engineering, Hiroshima University
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- MISHIMA Hiromu K
- Hiroshima General Hospital of West Japan Rail-way Company
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- TSUKAMOTO Hidetoshi
- Graduate School of Biomedical Sciences, Hiroshima University
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- SUGIMOTO Eiichiro
- Chugoku Rousai Hospital
Bibliographic Information
- Other Title
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- 空気噴流方式眼圧計で角膜変形遅れ特性が起こるメカニズムの解明
- クウキ フンリュウ ホウシキ ガンアツケイ デ カクマク ヘンケイ オクレ トクセイ ガ オコル メカニズム ノ カイメイ
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Abstract
Through the observation of the eye deformation during an air jet application, we found that the eye deformation is always delayed with respect to the starting time of the air jet application. In order to explain such a characteristic, we newly introduce the cornea chain model, which assumes that the surface can be bent without any resistance under zero internal pressure, while it can not be deformed under an adequate internal pressure. We show that the chain model can nicely explain the characteristic distribution in the cornea deformation. Furthermore, we show that a pretty high correlation (R=0.816) exists between the delay time and the estimated internal eye pressure. This result can be used in a new type of a non-contact tonometer, which measures the internal eye pressure based on the delay time and which is gentler for eyes than the conventional one.
Journal
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- Transactions of the Society of Instrument and Control Engineers
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Transactions of the Society of Instrument and Control Engineers 43 (2), 78-84, 2007
The Society of Instrument and Control Engineers
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Details 詳細情報について
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- CRID
- 1390001204503092352
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- NII Article ID
- 130003792073
- 10018544279
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- NII Book ID
- AN00072392
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- ISSN
- 18838189
- 04534654
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- NDL BIB ID
- 8723885
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed