G-30-1607-en
OPMI® VARIO on S8, S81 & S88 Suspension Systems
Issue 5.0
Printed on 30. 01. 2009
Preparations
157
Surgical microscope with a laser micromanipulator
Please observe the separate user manual for your laser micromanipu-
lator.
Warning!
It is absolutely vital that the focal planes of the surgical microscope and of
the laser micromanipulator are identical.
Before every laser application of the surgical microscope using a laser mi-
cromanipulator, you must adjust the focal plane of the microscope to the
focal plane of the laser micromanipulator. After correct matching of the
two focal planes, the focus of the surgical microscope (Varioskop) must
not be changed in order to avoid any deviations in the focal planes and,
as a result, an unfocused laser beam during the laser application.
Always check the correct adjustment before surgery (without patient!) and
before every laser application as follows (recommended procedure):
•
Set the microscope to maximum magnification.
•
Some micromanipulators offer the possibility of targeted laser beam
defocusing in the focal plane. Make sure that the laser is in the posi-
tion for the smallest possible laser spot for this check. Please observe
the separate user manual for your laser micromanipulator.
•
Hold a wooden spatula in the focal plane in such a way that you see it
sharply focused.
•
Trigger a few trial shots of the laser at the spatula, slightly changing
the spatula position relative to the focal plane for each shot.
The therapy beam of the laser displays its maximum effect in the focal
plane of the laser micromanipulator. The wooden spatula must be
sharply focused in this position. Only then will the two focal planes co-
incide. If this is not the case, correct the adjustment of the two focal
planes.
•
Repeat the test until full coincidence of the focal planes has been ob-
tained.
