BQ GA 04050 def.pmd - Haag-Streit USA

4 Operating the equipment
• The height of the table must be selected to enable the patient
to obtain a firm rest for the forehead and chin.
• In order to ensure that only that part of the eye to be examined
is illuminated and to avoid disturbing glare, the height of the
light beam should be appropriately adjusted.
Notice
• Only use as much light intensity as required.
• The light intensity should be reduced to a minimum on
completion of each examination. This extends the life of the
light bulb and protects the patient from severe glare at the
beginning of an examination.
• Those parts of the equipment coming into contact with
patients should be cleaned with a dry cloth before each
examination.
4.1 Illumination unit
Slit width
The slit width is set with either of the control knobs (18). The
division on the left hand knob enables any given slit width
setting to be subsequently recovered; but provides no information
on the actual width of the slit light.
Slit length
The slit length is set with the knurled control knob (22).
Slit positioning
The slit image can be positioned by turning the upper part of
the illumination unit with the knurled control knob (22) from the
vertical, through a range of any given oblique positions, to the
horizontal.
Examinations in indirect light
The slit image can be moved away from the center of the visual
field by loosening the centering screw (29). Tightening the
screw will recenter the slit image in the visual field of the
microscope.
Binocular examinations (fundus)
In order to ensure the possibility of conducting a binocular
examination in optical cross section without difficulty from
side angles between 3 and 10°:
• the shorter mirror should be installed,
• the illumination unit is rotated through 90° with the knurled
control knob (22) and with the latch (30) in stages of 5°,
• the illumination unit and the microscope are turned to the
center position (0°).
1500.7001000.04050
22
29
30
18
© HAAG-STREIT AG, CH-3098 Koeniz, Switzerland
ACHTUNG
Bitte das Kapitel "Gerätesicherheit" vor der
Inbetriebnahme des Gerätes unbedingt
durchlesen und beachten.
ATTENTION
Avant la mise en service de l'appareil consultez
le chapitre "Sécurité de l'appareil".
CAUTION
It is imperative to read the chapter "Operating
safety" before operating the equipment
and to observe its precautions.
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