G-30-1439-en
OPMI® VISU 200 BrightFlex™ Surgical Microscope
Issue 3.0
Printed on 21. 11. 2002
Operation
53
Adjusting the surgical microscope
Bring the surgical microscope into starting position within the focusing range. Set the minimum magnification on the surgical micro-
scope. Bring the surgical microscope into working position. Adjust the interpupillary distance on the binocular tube. Set the diopter
scales on the eyepieces. Please note that instrument myopia may occur.
Emmetropes
set the diopter scale to 0 diopter (D).
Eyeglass wearers
(who perform surgery wearing their
glasses) set the diopter scale to 0 di-
opter (D).
Ametropes
(who know their refractive powers
and perform surgery without wear-
ing their glasses) set the diopter
scale ring to their refractive powers.
Set both eyepieces on the main micro-
scope to +5 D.
Set both eyepieces on the assistant’s
microscope to +5 D (if applicable).
Eyepieces without reticles:
Eyepieces with reticles:
Turn the diopter scale ring on the eye-
piece slowly clockwise until the reticle is
imaged sharply. Stop turning the ring.
Turn the diopter scale ring of one
eyepiece slowly clockwise until the
image of the object is sharp. Stop
turning the ring. If necessary, repeat
this procedure three times and take
the average of the readings found.
Adjust the second eyepiece in the
same manner.
Focus the surgical microscope on the
object. The reticle and the object must
be imaged sharply at the same time.
Replace the tube and eyepieces on
the microscope body and firmly
tighten the securing screw.
Adjust the second eyepiece in the same
way until the object is seen sharply.
Adjust the eyecups in such a way that the full field of view can be seen. Set the maximum magnification on the microscope and focus
on the object. Set the working magnification required. When the magnification is changed, the focal plane is retained, but the depth
of field changes.
Note: If several surgeons use the instrument, it is advisable to draw up a table
showing the individual refractive powers of each surgeon and to keep it in a handy
location near the instrument.
*) CAUTION:
Never point the eyepieces at the sun!
Ametropes
(who do not know their re-
fractive powers and perform surgery
without wearing their glasses):
Set both eyepieces on the main micro-
scope to +5 D.
Set both eyepieces on the assistant’s
microscope to +5 D (if applicable).
Remove the binocular tube and
eyepieces from the microscope
body and point them at a distant ob-
ject
*)
, i.e. use them like a pair of
binoculars.The image of the object
is still unsharp.
Содержание VISU 200
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