| Stroke dynamics and frequency of 3 phacoemulsification machines. | |
| | |
MedLine Citation:
|
PMID: 22322168 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
|
PURPOSE: To measure the working frequency and the stroke dynamics of the phaco tip of 3 phacoemulsification machines. SETTING: University Eye Clinic of Trieste, Italy. DESIGN: Experimental study. METHODS: A video wet fixture was assembled to measure the working frequency using a micro camera and a micropulsed strobe-light system. A different video wet fixture was created to measure tip displacement as vectorial movement at different phaco powers using a microscopic video apparatus. RESULTS: The working frequency of the Infiniti Ozil machine was 43.0 kHz in longitudinal mode and 31.6 kHz in torsional mode. The frequency of the Whitestar Signature machine was 29.0 kHz in longitudinal mode and 38.0 kHz with the Ellips FX handpiece. The Stellaris machine had a frequency of 28.8 kHz. The longitudinal stroke of the 3 machines at different phaco powers was statistically significantly different. The Stellaris machine had the highest stroke extent (139 μm). The lateral movement of the Infiniti Ozil and Whitestar Signature machines differed significantly. No movement on the y-axis was observed for the Infiniti Ozil machine in torsional mode. The elliptical path of the Ellips FX handpiece had different x and y components at different phaco powers. CONCLUSIONS: The 3 phaco machines performed differently in terms of working frequency and stroke dynamics. The knowledge of the peculiar lateral and elliptical path strokes of Infiniti and Whitestar Signature machines may allow the surgeon to fully use these features for lens removal. FINANCIAL DISCLOSURE: No author has a financial or proprietary interest in any material or method mentioned. |
| | |
Authors:
|
Daniele Tognetto; Paolo Cecchini; Pia Leon; Marta Di Nicola; Giuseppe Ravalico |
Related Documents
:
|
16784728 - Error-related erp components and individual differences in punishment and reward sensit... 22275578 - Influence of reaching direction on visuomotor adaptation: an explorative study. 22579218 - Speed enforcement in china: national, provincial and city initiatives and their success. 16795318 - Good-behavior game: a replication and systematic analysis. 7965918 - Variable asymmetry and resonance in the avian vocal tract: a structural basis for indiv... 21967268 - The influence of adaptation and inhibition on the effects of onset asynchrony on audito... |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Journal of cataract and refractive surgery Volume: 38 ISSN: 1873-4502 ISO Abbreviation: J Cataract Refract Surg Publication Date: 2012 Feb |
Date Detail:
|
Created Date: 2012-02-10 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 8604171 Medline TA: J Cataract Refract Surg Country: United States |
Other Details:
|
Languages: eng Pagination: 333-42 Citation Subset: IM |
Copyright Information:
|
Copyright © 2012 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved. |
Affiliation:
|
From the University Eye Clinic of Trieste (Tognetto, Cecchini, Leon, Ravalico), Trieste, and the Laboratory of Biostatistics (Di Nicola), Department of Biomedical Science, University of Chieti, Pescara, Italy. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Comparison of deep anterior lamellar keratoplasty and intrastromal corneal ring segment implantation...
Next Document: Small-incision insertion of artificial iris prostheses.