Usefulness of an automated ultrasonic pulse system for phacoemulsification-aspiration cataract surgery
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Accession number;04A0375653
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| Title;Usefulness of an automated ultrasonic pulse system for phacoemulsification-aspiration cataract surgery |
| Author;
NISHIHARA HITOSHI
(Showa Univ. Fujigaoka Hospital, JPN)
YAGUCHI SHIGEO
(Showa Univ. Fujigaoka Hospital, JPN)
SUZUKI SATOSHI
(Showa Univ. Fujigaoka Hospital, JPN)
INOUE TOSHU
(Showa Univ. Fujigaoka Hospital, JPN)
ISHIDA YOSHIKO
(Showa Univ. Fujigaoka Hospital, JPN)
NISHIMURA EIICHI
(Showa Univ. Fujigaoka Hospital, JPN)
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Journal Title;Japanese Journal of Clinical Ophthalmology
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Journal Code:Z0515B
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ISSN:0370-5579
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VOL.58;NO.4;PAGE.445-448(2004)
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| Figure&Table&Reference;FIG.4, TBL.1, REF.6 |
| Pub. Country;Japan |
| Language;Japanese |
| Abstract;We developed an automated ultrasonic pulse emission system for cataract surgery. This system is designed to oscillate 50 times per second. Each pulse continues for 6ms. Whenever the foot-switch is pressed by 90% of the maximum value or over, or the vacuum for aspiration lasts for 1 second or longer at 80% of basic level, the pulse prolongs automatically to 14ms and the ultrasound duty increases from 30% to 70%. The power output of the system is set between 15% and 40% depending on the harness of lens nucleus. It is set at 40% for continuous oscillation. We performed cataract surgery on 43 eyes with this system. The following items were significantly less than with the conventional system: duration of surgery (p=0.02, paired-t test), sum of duration of ultrasound emission (p<0.0001), and total ultrasound energy (p<0.0001). The system was particularly useful in reducing the amount of ultrasound energy. (author abst.) |
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