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L. E. Fernandez de Castro, K. D. Solomon; Fluid Dynamics During Phacoemulsification. Invest. Ophthalmol. Vis. Sci. 2008;49(13):376.
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© ARVO (1962-2015); The Authors (2016-present)
To describe a model for visualizing and quantifying fluid dynamics of the torsional and the conventional phacoemulsification handpiece using the Alcon Infiniti Vision System.
Visualization and quantification of intraocular fluid dynamics was obtained by injecting polysterene-beads (125-212 microns diameter) and videoing with anterior, side views, and a high speed camera in porcine eyes, donor eyes, and in a closed controlled environment. Images of irrigation, irrigation combined with aspiration, irrigation/aspiration, and phacoemulsification using different parameters (torsional and ultrasound power, aspiration flow rate, vacuum, pulse, and bottle height) were analyzed.
Despite of changing power settings, the model distinguished different clearance rates and aspiration efficiency of beads. The high speed camera demonstrated different fluidic patterns of bead flow in the periphery and central needle tip with and without lens material.
Although this unique fluidic model is a preliminary study, it seems to be a feasible model to study fluid movement in the anterior chamber. Future studies using this model can determine what is optimal, which can then be applied to the clinical settings.
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