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4.2
Adjusting the eye-pieces and the eyeguards
Eye-pieces
Before the first examination, the eye-pieces should be ad-
justed singly to correspond with the refraction divergence of
the examiner.
Insert the provided focusing rod (65) in place of the protecting
cover (66) with the flat projection surface facing the microscope.
Line up the illumination unit and the microscope in the central
position (0°). Set the eye-piece with the fixing screw until it no
longer continues to turn when adjusting the diopter settings.
Adjust each eye-piece separately, by turning the knurled ring
with the diopter scale separately, until the projected slit is
seen in focus.
Adjust from (+) to (-) at low magnification.
Younger examiners are recommended to make an additional
correction on both eye-pieces of -1 to -2 diopters each, to
compensate for the accommodation that occurs as a result of
convergence when conducting binocular examinations.
Eyeguard
The adjustable eyeguard (71) serves to set up the correct
working distance of the examiner to the eye-piece.
For examiners without spectacles:
pull out the eyeguard fully to the extended position.
For examiners wearing spectacles:
push in the eyeguard fully to the retracted position.
4.3
Possibilities for regulating the brightness
The brightness of the slit light illumination can be varied by
means of
• the knob on the instrument base (18) which adjusts the
intensity of the slit illumination
• the 10% grey filter on the upper part of the illumination unit
of the slit lamp
Regulation of the brightness for the video
The brightness of the background illumination (optional) on the
cold light source housing can be varied by means of the knob
for a continuous regulation of the brightness.
4.4
Focussing with the video
Focussing onto an object during an examination should always
be carried out as a rule by moving the microscope towards the
object until the area of interest comes into focus.
If the microscope is moved further towards the object, it may
continue to be physically observed due to the users accom-
modation, but no further compatibility will exist with the video
camera.
65
66
Okular mit Prismengehäuse
67 Prismengehäuse
68 Okularstutzen
69 Index (weisser Punkt)
70 Rändelring mit Dioptrienskala zur Einstellung der
Refraktion des Untersuchers (± 6 dpt)
71 Verschiebbare Augenmuschel
72 Okular-Feststellschraube
Oculaire avec prisme du boîtier
67 Boîtier du prisme
68 Tubulure de l'oculaire
69 Repère (point blanc)
70 Bague moletée avec échelle de dioptrie pour
régler la réfraction de l'examinateur (± 6 dioptries)
71 Bonnette amovible
72 Vis de fixation de l'oculaire
Eye-piece with prism housing
67 Prism housing
68 Eye-piece mounting
69 Index (white spot)
70 Knurled ring with diopter scale for setting the refraction
of the examiner (± 6 dpt)
71 Sliding eyeguard
72 Eye-piece fixing screw
1500.7200631.04040
67
68
69
70
© Haag-Streit AG, CH-3098 Koeniz, Switzerland
71
72
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