Haag-Streit BI 900 Instructions For Use Manual - page 12
12
DEUTSCH
ENGLISH
FRANÇAIS
ITALIANO
ESPAÑOL
NEDERLANDS
PORTUGUÊS
SVENSKA
DEUTSCH
ENGLISH
FRANÇAIS
ITALIANO
ESPAÑOL
NEDERLANDS
PORTUGUÊS
SVENSKA
© HAAG-STREIT AG, 3098 Koeniz, Switzerland - HS Doc. no. 1500.7220505-04010 – 2015 – 08
5.6 Operating the instrument
WARNING!
•
Before every examination, check that the automatic left to right de-
tection works correctly from the release module!
•
The device must be switched off after every use. Otherwise there is a
risk of overheating when a protective dust cover is employed.
•
Adjust the eyepieces (22) in accordance with the examiner’s refraction by turning
the knurled rings and set the eye distance.
•
Use the turn screw (A) to set the chin rest in such a way that the patient’s eyes
are at the same height as the black mark (B) on the sides of the head rest (see
separate instructions).
•
Switch on the illumination by pressing the switch on the power supply.
•
Adjust the height of the slit lamp by turning the control lever (30) until the lumi-
nous aigrette is at eye level.
•
Themagnificationofthestereomicroscopecanbechangedviatheleverforex-
changing the eyepieces (92) (see section Microscope and eyepiece).
•
The rigidly held control lever (30) gently inclined towards the examiner can be
used to move the entire device towards the patient until the slit appears approxi-
matelyfocusedonthecornea.Thisinitialsettingisverifiedwiththenakedeye.
Fine adjustment is performed by tilting the control lever while observing via the
eyepiece (22).
•
The slit light width is set left or right with the knurled (control) knob (28), as is the
angle between the eyepieces and illumination.
•
The slit image can be set vertically, horizontally or as diagonal as required by
turning the illumination facility on the handle (5) (raster at 45°, 90° and 135°;
stops at 0° and 180°; scale in 5° increments).
•
To ensure that unimpeded binocular fundus examination is also possible at lateral
angles of between 3° and 10°, a short mirror (8) is used, the illumination turned
90° using the knurled (control) knob (5) and tilted in 5° steps using the latch (27),
and the illumination and microscope turned to the central position (0°) again.
•
Front-lens glasses and contact glasses are used to examine the ocular fundus.
Diffused illumination:
•
Connecting the diffuser upstream created diffused illumination (9). This allows
monitoring of the overview and can be used to capture the overview picture with
a camera.
5
B
9
A
22
25
27
28
30
9
8
Indirect illumination:
•
For observation in regredient light (indirect illumination), the centering screw (25)
isloosenedinordertomovetheslitimageoutofthecenterofthevisualfield.
Tightening the screw centers the slit image again.
Tilting the slit:
•
The latch (27) can be used to tilt the illumination in 5° steps. In this way, a diago-
nal ray of light from below is generated when the slit is oriented horizontally. The
slitorientationallowsareflection-freeexaminationwithcontactglasses(fundus
and gonioscopy) and magnifying glasses.
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