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つくばリポジトリ (Tulips-R) >
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Experiments in fluids >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2241/116786
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| Title: | Stereo-PIV study of flow inside an eye under cataract surgery |
| Authors: | Sakakibara, Jun
Yamashita, Masaki
Kobayashi, Tatsuya
Kaji, Yuichi
Oshika, Tetsuro
榊原, 潤
加治, 優一
大鹿, 哲郎 |
| Issue Date: | Apr-2012 |
| Publisher: | Springer |
| Journal Title: | Experiments in fluids |
| Volume: | 52 |
| Issue: | 4 |
| Start Page: | 831 |
| End Page: | 842 |
| DOI: | 10.1007/s00348-011-1140-0 |
| Abstract: | We measured velocity distributions in the anterior chamber of porcine eyes under simulated cataract surgery using stereoscopic particle image velocimetry (stereo-PIV). The surface of the cornea was detected based on the images of laser-induced fluorescent light emitted from fluorescent dye solution introduced in a posterior chamber. A coaxial phacoemulsification procedure was simulated with standard size (standard coaxial phacoemulsification) and smaller (micro coaxial phacoemulsification) surgical instruments. In both cases, an asymmetric flow rate of irrigation was observed, although both irrigation ports had the same dimensions prior to insertion into the eye. In cases where the tip of the handpiece was placed farther away from the top of the cornea, i.e., closer to the crystalline lens, direct impingement of irrigation flow onto the cornea surface was avoided and the flow turned back toward the handpiece along the surface of the corneal endothelium. Viscous shear stress on the corneal endothelium was computed based on the measured mean velocity distribution. The maximum shear stress for most cases exceeded 0.1 Pa, which is comparable to the shear stress that caused detachment of the corneal endothelial cells reported by Kaji et al. in Cornea 24:S55–S58, (2005). When direct impingement of the irrigation flow was avoided, the shear stress was reduced considerably. |
| URI: | http://hdl.handle.net/2241/116786 |
| Rights: | © Springer-Verlag 2011
The original publication is available at www.springerlink.com |
| Text Version: | author |
| Appears in Collections: | 榊原 潤 (Sakakibara Jun)
加治 優一 (Kaji Yuichi)
大鹿 哲郎 (Oshika Tetsuro)
Experiments in fluids
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