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Automated recording and control of intracameral pressure during phacoemulsificaion-aspiration surgery Noriaki Kido 1 , Masato Miyazaki 2 , Takafumi Harada 3 , Shinichiro Nakagawa 4 , Satoshi Ikai 4 , Yuji Kakutani 4 , Eikou Furutani 4 , Mitsuhiko Araki 4 , Takao Hashimoto 5 1Dept of Ophthalmol and Visual Sci, Kyoto Univ Grad Sch of Med 2Dept of Ophthalmol, St. Marianna Univ Sch of Med 3Yaizu Kogawa Eye Clinic 4Dept of Electronics Engineering, Grad of Engineering,Kyoto Univ 5Jules Stein Eye Inst, Univ of California pp.967-971
Published Date 2002/6/15
DOI https://doi.org/10.11477/mf.1410907765
  • Abstract
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Safe phacoemulsification requires stable anterior chamber. We recorded the change of intracameral pres-sure during phacoemulsification using an automated system. We also tested the novel active regulatory methods of the intracameral pressure. Maximum vacuum pressure and flow rate were set at 330mmHg and 33 ml/min, respectively. Phacoemulsification was done under topical instillation of anesthetic, using 3.0 mm-corneal, single-plane, self-sealing incision. Intracameral pressure was continuously recorded at 0.5 msec intervals using an intracameral pressure-moni-toring system previously reported. The rate of change of the intracameral pressure was larger in absolute value during surge phenomena than during constant pressure-states. As for the control regulation of intracameral pressure, differ-ential regulation, which suppresses the rate of change of the pressure, was more effective than constant-regulation in order to prevent surge phenomenon.


Copyright © 2002, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1308 印刷版ISSN 0370-5579 医学書院

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