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6.2.4 Before treatment
Before treatment, it is essential to ensure the spot is in fo-
cus and the pattern produced by the aiming beam matches
exactly to the gure on the GUI preview.
6.2.5 Checking the Spot Focus
1. When the system is on treatment mode, the red pilot
laser is active.
2. Check the spot focus on the focusing stick.
3. Check also the beam alignment by ensuring the spot is
placed in the middle of the slit of the slit lamp.
6.2.6. Treatment Instructions
1. Ensure the position of the patient is correct
2. Ensure that the gure drawn to the retina is completely
visible. Otherwise the microscope has to be moved be-
fore starting the treatment.
3. Coagulate the gure by pressing the foot switch. The
treatment laser coagulates a set of pulses to the target
tissue. The program begins to coagulate the spots from
the outer edge of the gure and continues to the center
to ensure the safety of the treatment. A warning sound is
produced when the treatment laser is active.
4. Each press of the footswitch produces one scanned
pattern to the target tissue unless the treatment is inter-
rupted prematurely by releasing the foot switch.
6.2.7. Finishing the treatment
1. After the treatment press the top bar to deactivate the
treatment laser.
2. The program returns to the setting mode.
6. Using Valon
Attention!
As the aiming
beam passes
down the same
delivery sys-
tem as the
working beam
it provides a
good means of
checking the
integrity of the
system. If the
aiming beam
is not present,
its intensity is
reduced or it
look diffused,
this is a pos-
sible indication
of a damaged
or malfunction-
ing delivery
system.
Warning!
Do not use the
system if the
pattern pro-
duced by the
aming beam
differes in any
way from the
pattern on the
user interface!