BQ GA 04050 def.pmd - Haag-Streit USA
BQ GA 04050 def.pmd - Haag-Streit USA
BQ GA 04050 def.pmd - Haag-Streit USA
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4 Operating the equipment<br />
• The height of the table must be selected to enable the patient<br />
to obtain a firm rest for the forehead and chin.<br />
• In order to ensure that only that part of the eye to be examined<br />
is illuminated and to avoid disturbing glare, the height of the<br />
light beam should be appropriately adjusted.<br />
Notice<br />
• Only use as much light intensity as required.<br />
• The light intensity should be reduced to a minimum on<br />
completion of each examination. This extends the life of the<br />
light bulb and protects the patient from severe glare at the<br />
beginning of an examination.<br />
• Those parts of the equipment coming into contact with<br />
patients should be cleaned with a dry cloth before each<br />
examination.<br />
4.1 Illumination unit<br />
Slit width<br />
The slit width is set with either of the control knobs (18). The<br />
division on the left hand knob enables any given slit width<br />
setting to be subsequently recovered; but provides no information<br />
on the actual width of the slit light.<br />
Slit length<br />
The slit length is set with the knurled control knob (22).<br />
Slit positioning<br />
The slit image can be positioned by turning the upper part of<br />
the illumination unit with the knurled control knob (22) from the<br />
vertical, through a range of any given oblique positions, to the<br />
horizontal.<br />
Examinations in indirect light<br />
The slit image can be moved away from the center of the visual<br />
field by loosening the centering screw (29). Tightening the<br />
screw will recenter the slit image in the visual field of the<br />
microscope.<br />
Binocular examinations (fundus)<br />
In order to ensure the possibility of conducting a binocular<br />
examination in optical cross section without difficulty from<br />
side angles between 3 and 10°:<br />
• the shorter mirror should be installed,<br />
• the illumination unit is rotated through 90° with the knurled<br />
control knob (22) and with the latch (30) in stages of 5°,<br />
• the illumination unit and the microscope are turned to the<br />
center position (0°).<br />
1500.7001000.<strong>04050</strong><br />
22<br />
29<br />
30<br />
18<br />
© HAAG-STREIT AG, CH-3098 Koeniz, Switzerland<br />
ACHTUNG<br />
Bitte das Kapitel "Gerätesicherheit" vor der<br />
Inbetriebnahme des Gerätes unbedingt<br />
durchlesen und beachten.<br />
ATTENTION<br />
Avant la mise en service de l'appareil consultez<br />
le chapitre "Sécurité de l'appareil".<br />
CAUTION<br />
It is imperative to read the chapter "Operating<br />
safety" before operating the equipment<br />
and to observe its precautions.<br />
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