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Click on the "Save" button (9) to save your settings under the
X
X
user name entered at the desired location.
In the service menu, a value for the maximum duration of
the GLOW800 mode from 10 to 180 seconds can be adjusted
by service.
Note We recommend to put just the GLOW functions to the
handle which are known thoroughly. Typical commands are
"On/Off" and "Playback".
7.2
Fluorescence visibility
The GLOW800 function optimizes automatically the fluorescence
visibility to receive the best possible image for a broad working
range of microscope parameters and ICG dosage.
However, these parameters still have an impact to the fluorescence
visibility as the following description explains for further
optimizations.
Illumination × Dosage
FL Visibility =
2
Mag
× WD
FL Visibility:
Fluorescence brightness/perceptibility on the
screen
Illumination:
Microscope Excitation intensity
Dosage:
Injected ICG amount in mg/kg
Mag.:
Magnification
WD:
Working Distance
The ICG Dosage is the anesthetist's and/or surgeon's
decision.
• Less excitation intensity "Brightness GLOW800" and/or a lower
ICG dosage reduces the fluorescence visibility, especially at high
magnification and/or long working distance. Less fluorescence
visibility or fluorescence brightness might be observed already
at a lower magnification and WDs.
• Higher excitation intensity "Brightness GLOW800" and/or a
higher ICG dosage increases the fluorescence visibility,
especially at high magnification and/or long working distance
and can compensate the reduction of these two optical
parameters.
The fluorescence visibility can decrease even with standard
conditions, if the efficiency of the illumination system is
reduced or the Xenon bulb life time reaches its end.
In this case a message is displayed on the graphical user interface
(GUI) with a request to change the illumination bulb.
2
GLOW800 / Ref. 10 747 241 / Version 04
7.2.1
GLOW800 Brightness (Illumination/
Excitation intensity)
Open the "FL" tab to set the GLOW800 brightness to the
X
X
required level with bar (1).
Recommended Brightness settings
The default and recommended "Brightness GLOW800" setting is
100 % to achieve good fluorescence visibility in higher
magnifications and working distances.
7.2.2
Working distance limitation
Decide if the working distance limitation in white light mode
X
X
should be switched on (default) or off (10).
When the working distance limitation in white light mode is
switched off and the working distance is above the limit
when switching to GLOW800 mode, the working distance
will be reduced and the picture will get out of focus.
Preparation before surgery
1
10
13
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