Norlase Leaf - Page 21

Leaf User Manual
P/N: 97-4000, Revision 08, Release date: 2020-11-10 Page 21 of 85
This warning describes an energy density increase to target tissue when a spot size is reduced
and the Power and Duration levels remains the same. It is important to understand the
relationship between the power level, pulse duration, spot size and subsequent energy density
within the laser spot size.
As an example, if the Power and Duration remain constant and the spot size is reduced by half,
the energy density increases by FOUR TIMES the original level.
• Energy Density Examples:
Power
Duration
Spot Size
Energy Density
100 mw
100 ms
200 µ
32 J/cm
2
100 mw
100 ms
100 µ
127 J/cm
2
100 mw
100 ms
50 µ
509 J/cm
2
WARNING: Any reduction in spot size during treatment may result in too high of energy delivery
to the patient.
The energy density of any given spot is displayed in the “Status Summary” at the bottom left of
the User Interface for easy reference.