Johnson & Johnson Surgical Vision Veritas, Operator'S Manual

Page: 143 / 270

Program Settings
Z370584 Rev. D WHITESTAR Technology
6-21
High Power Pulse Phaco Power
High Power Pulse generates continuous phaco power in foot pedal position 3. When you
press the foot pedal, the continuous pulse changes into long pulses and then gradually
changes to short pulses.
Single Burst Phaco Power (Panel Only)
Single Burst delivers a single burst of ultrasonic power of 110 ms duration when you press the
foot pedal to position 3. You must return to foot pedal position 2, pause for approximately
one-half (0.5) second, and then press the foot pedal to position 3 to obtain an additional
burst of energy.
Multiple Burst Phaco Power (Panel Only)
Multiple Burst generates a burst of ultrasonic power of 110 ms duration, with additional
bursts deployed beginning at approximately 1 burst per second when you press the foot
pedal to position 3.
The frequency of burst increases as you press the foot pedal. At the maximum level of foot
pedal position 3, the delivered rate of the bursts are 4 bursts per second.
Continuous Burst Phaco Power
Continuous Burst can deliver an ultrasonic burst duration from 50 to 150 ms. As you press the
foot pedal through position 3, the bursts get closer together. At the maximum level of
foot pedal position 3, the bursts blend together, and the power becomes continuous (at the
preset power level). The default setting is 100 ms.
To set the Continuous Burst range:
1. Tap the Continuous Burst button.
2. Tap the On Time number. An On Time dialog box opens.
3. Tap the up or down arrows to increase or decrease the burst rate from 50 to 150.
4. Tap Finished to close the screen.
WHITESTAR Technology
WHITESTAR Technology can be applied in any phaco power delivery mode. This advanced
phacoemulsification power technology delivers finely modulated pulses of energy
interrupted by extremely brief cooling periods. This technology is available in linear or panel
mode. When the WHITESTAR delivery mode is turned on, either or appears on the
touchscreen.
WHITESTAR duty cycles are expressed as pulse time on/pulse time off, to achieve a desired
duty cycle. For example, the duty cycle setting 6/12 means that the pulse time on is 6 ms, and
the pulse time off is 12 ms, that results in a 33% duty cycle.