Intraocular pressure study using monitored forced-infusion system phacoemulsification technology

Jason Jensen, Tyler Boulter, Nathan G. Lambert, Brian Zaugg, Brian C. Stagg, Jeff H. Pettey, Randall J. Olson

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Purpose To optimize phacoemulsification efficiency by varying the intraocular pressure (IOP) using the Centurion Vision System, a monitored forced-infusion system. Setting John A. Moran Eye Center Laboratories, University of Utah, Salt Lake City, Utah, USA. Design Laboratory investigation. Methods Porcine lenses were soaked in formalin and divided into 2.0 mm cubes; 0.9 mm balanced tips were used. Intraocular pressure levels were tested from 30 to 110 mm Hg at 10 mm Hg intervals. Vacuum was set at 500 mm Hg, aspiration at 35 mL/min, and torsional power at 60%. Efficiency (time to lens removal) and chatter (number of lens fragment repulsions from the tip) were measured. Results There was a linear relationship between efficiency and IOP. Increasing IOP led to an increase in efficiency (ie, to a decrease in time necessary to remove the lens fragment) (R2 = .5769, P = .0176). Chatter correlated with IOP in the range of 30 to 50 mm Hg (R2 = .4506, P = .0448) and was minimal at higher IOPs. Conclusions Increasing IOP in the monitored forced-infusion system improved efficiency. Chatter was also decreased or eliminated with increasing IOP. Additional studies will be required to understand the reasons for these findings. Financial Disclosure None of the authors has a financial or proprietary interest in any material or method mentioned.

Original languageEnglish (US)
Pages (from-to)768-771
Number of pages4
JournalJournal of Cataract and Refractive Surgery
Volume42
Issue number5
DOIs
StatePublished - May 1 2016

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Intraocular Pressure
Technology
Lenses
Efficiency
Phacoemulsification
Disclosure
Vacuum
Formaldehyde
Swine

All Science Journal Classification (ASJC) codes

  • Surgery
  • Ophthalmology
  • Sensory Systems

Cite this

Intraocular pressure study using monitored forced-infusion system phacoemulsification technology. / Jensen, Jason; Boulter, Tyler; Lambert, Nathan G.; Zaugg, Brian; Stagg, Brian C.; Pettey, Jeff H.; Olson, Randall J.

In: Journal of Cataract and Refractive Surgery, Vol. 42, No. 5, 01.05.2016, p. 768-771.

Research output: Contribution to journalArticle

Jensen, Jason ; Boulter, Tyler ; Lambert, Nathan G. ; Zaugg, Brian ; Stagg, Brian C. ; Pettey, Jeff H. ; Olson, Randall J. / Intraocular pressure study using monitored forced-infusion system phacoemulsification technology. In: Journal of Cataract and Refractive Surgery. 2016 ; Vol. 42, No. 5. pp. 768-771.
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