Zeiss VISU 200, Инструкция по эксплуатации, Страница: 22 / 80

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Description
G-30-1439-en OPMI® VISU 200 BrightFlex™ Surgical Microscope Issue 3.0
Printed on 21. 11. 2002
2 Support arm for the surgical microscope
The support arm incorporates a tilt device. This allows the viewing di-
rection of the surgical microscope to be adapted to the requirements
of the surgical field. Using the knob for fine tilt, you can position the
surgical microscope in a range from +180° to -180° (+ in the direction
of the surgeon and - in the opposite direction). The +90° setting is ideal
for surgery on patients in a seated position or lying on their side.
Caution:
Do not tilt the main microscope / - 180°, as this could
damage the microscope cable or the light guide.
3 Main microscope
The apochromatic optics of the main microscope provide superb op-
tical quality. The microscope image displays optimum contrast and ex-
cellent detail recognition along with a large depth of field. The bright
microscope image is a particular benefit in vitreoretinal surgery. A 1:6
ratio zoom system allows the magnification of the overall system to be
set as required by the surgical procedure.
Two apochromatic objective lenses with focal lengths of 175 mm and
200 mm are available for different working distances.
A 180° tiltable tube is used as a viewing device for the surgeon. The
large tilt range allows work with minimum fatigue.
The standard equipment includes eyepieces with a magnification
factor of 12.5x (option: 10x).
The illumination system has been designed for use in ophthalmology.
A light guide directs the light from the light source in the suspension
system to the surgical microscope.
6° illumination can be continuously faded in. This allows the illumina-
tion intensity in the surgical field to be adjusted continuously, without
changing the color of the light. The illumination of the surgical field at
an angle of 6° produces an image with an outstanding impression of
depth.
An additional illumination system produces an intensive red reflex
even when the eye is decentered. The angle of illumination can be
switched from +2° to -2°.