Abstract
In one exemplary mode, a phacoemulsification system includes a phacoemulsification probe, an irrigation tube to provide irrigation fluid into an eye, an irrigation pump to pump irrigation fluid into the eye, an aspiration tube convey aspiration fluid from the eye, an aspiration pump to pump the aspiration fluid from the eye, a sensor to provide a signal indicative of current intraocular pressure in the eye, and a pump controller to receive the signal provided by the sensor, compute a value of intraocular pressure at a future time responsively to the provided signal and an indicator of change in the intraocular pressure over time, and control the irrigation pump to adjust a flow rate of the irrigation fluid to maintain the intraocular pressure at a given intraocular pressure responsively to the computed value of the intraocular pressure at the future time.