Johnson & Johnson Surgical Vision Veritas, Operator'S Manual

Page: 156 / 270

FUSION Fluidics Phaco Z370584 Rev. D
6-34
Program Settings
Figure 6-23 — FUSION Settings Screen
3. On the FUSION screen, tap the On button to turn CASE mode on.
NOTE: If the Venturi pump option is on, you cannot access the FUSION Fluidics screen.
There is no Occlusion mode phaco or CASE mode with Venturi.
4. The FUSION screen shows the CASE settings as a graph. Use the up and down arrows at
the bottom of the screen to adjust the:

Upper Threshold (Up) – This is the maximum threshold vacuum setting. You define the
amount for the upper threshold by the up time threshold setting.

CASE Vacuum (CASE) – This is the optimum occlusion vacuum setting.

Lower Threshold (Down) – After the occlusion clears, the vacuum level drops to the
lower vacuum threshold setting to allow the occlusion to safely clear, and then
gradually returns to the previous levels.
NOTE: You cannot set the nonzero start value higher than the CASE up threshold or the
CASE vacuum setting. You cannot set the nonzero start value higher than the CASE
down threshold. When the current vacuum level reaches the CASE threshold, the system
uses the CASE settings. When the current vacuum level goes below the CASE down
threshold, the system uses the nonzero start settings as long as the system is also out of
CASE mode.

Up Time – Use the up/down arrows to change the up time threshold. The up time
threshold is the maximum time the system maintains the maximum threshold vacuum.
5. Tap Finished to close the screen.