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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4.2 Adjusting the eyepieces / eyeguards<br />
Eyepieces<br />
Before the first examination, the eyepieces should be adjusted<br />
singly to correspond with the refraction divergence of the<br />
examiner. Insert the provided focusing rod (48) in place of the<br />
protecting cover (14) with the flat projection surface facing the<br />
microscope. Line up the illumination unit and the microscope<br />
in the central position (0°).<br />
Adjust each eyepiece separately, by turning the knurled ring<br />
with the diopter scale separately, until the projected slit is seen<br />
in focus. Adjust from (+) to (-) at low magnification.<br />
Younger examiners are recommended to make an additional<br />
correction on both eyepieces of - 1 to - 2 diopters each, to<br />
compensate for the accommodation that occurs as a result of<br />
convergence when conducting binocular examinations. The<br />
requisite pupil distance on the microscope can then be adjusted.<br />
Eyeguard<br />
The adjustable eyeguard serves to set up the correct working<br />
distance of the examiner to the eyepiece.<br />
For examiners without spectacles:<br />
pull out the eyeguard fully to the extended position.<br />
For examiners wearing spectacles:<br />
push in the eyeguard fully to the retracted position.<br />
Eyepiece with prism housing<br />
25 Prism housing<br />
49 Index (white spot)<br />
50 Knurled ring with diopter scale for setting the refraction<br />
of the examiner (± 8 D)<br />
51 Sliding eyeguard<br />
4.3 Possibilities for regulating the brightness<br />
The brightness of the slit light illumination can be varied by<br />
means of<br />
• the knob on the instrument base which adjusts the intensity<br />
of the slit illumination<br />
• the 10 % grey filter on the upper part of the illumination<br />
unit of the slit lamp<br />
1500.7001000.<strong>04050</strong><br />
48<br />
14<br />
25<br />
49<br />
50<br />
51<br />
© HAAG-STREIT AG, CH-3098 Koeniz, Switzerland<br />
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