Haag-Streit BM 900 Instructions For Use Manual - page 8
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© HAAG-STREIT AG, 3098 Koeniz, Switzerland - HS-Doc. No. 1500.7200492-04150 – 15. Edition / 2017 – 01
DEUTSCH
ENGLISH
FRANÇAIS
ITALIANO
ESPAÑOL
NEDERLANDS
PORTUGUÊS
SVENSKA
DEUTSCH
ENGLISH
FRANÇAIS
ITALIANO
ESPAÑOL
NEDERLANDS
PORTUGUÊS
SVENSKA
•
Adjust the eyepieces (23) in accordance with the examiner’s refraction by turning
the knurled rings and set the eye distance.
•
Switch on the illumination by turning 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.
•
The rigid control lever (30) gently inclined towards the examiner can be used to
push the entire instrument until the slit appears approximately focused on the
cornea.Thisinitialsettingisverifiedwiththenakedeye.Finetuningisperformed
by tilting the control lever, which is easily controlled at the top end, while observ-
ing via the stereo microscope (22).
•
The slit width is set left or right with the rotating knob (17), as is the angle be-
tween the stereo microscope and illumination.
•
The slit image can be set vertically, horizontally or as diagonally as required by
turning the illumination facility on the control knob (20) (locking points at 45°, 90°
and 135°; stops at 0° and 180°; scale in 5° increments).
•
To ensure that unimpeded binocular fundus examination in the optical section is
also possible at lateral angles of between 3° and 10°, a short mirror (12) is used,
the illumination turned 90° using the locking screw (20) and tilted in 5° steps us-
ing the latch (27), and the illumination and microscope turned to the central po-
sition (0°).
•
ThemagnificationofthestereomicroscopecanbechangedontheslitlampBM
900 by changing the lenses using the lever (24) or exchanging the eyepieces.
•
Front-lens glasses and contact glasses are used to examine the ocular fundus.
Diffuse illumination:
•
A diffuse illumination is achieved by positioning the diffusor (8) upstream. This
enables overview monitoring and can be used for taking overview images with
the Imaging Module.
Indirect illumination:
•
For observation in regredient light (indirect illumination), the centering screw (26)
isloosenedinordertomovetheslitimageoutofthecenterofthevisualfield.
Tightening the screw centers the slit image again.
Slit tilting:
•
The latch (27) can be used to tilt the illumination in 5° steps. This creates an
angled light beam during horizontal slit orientation. Tilting the slit enables re-
flex-freeexaminationwithcontactglasses(fundusandgonioscopy)andmagni-
fying glasses.
22
20
19
23
10
11
17
4
6
7
24
26
27
30
5.4 Settingthefilters&diaphragms
34
38
39
40
41
35
36
37
34. Open
35. Greyfilter(10%)
36. Redremovalfilter
37. ReserveopeningforfilterØ15mm
(0 / -0.2), thickness 2.5mm
38. Fixation star
39. Apertures of 8, 5, 3, 2, 1 and 0.2
mm in ø
40. Display of slit length in 1 to 8 mm
41. Bluefilter
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