Zeiss SL 120, Documentation

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Operation of the instrument
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Adjusting the illumination
The light dose is based on the illuminance and exposure time.
Very long exposure times of the same area of the retina are not typical, as
slit lamp examination is a dynamic process.
The illuminance directed on the fundus can be reduced as follows:
•
Reduce the lamp brightness.
•
Do not dilate the patient's pupil unless it is really necessary.
•
Only adjust the size of the illuminated area (slit width, slit length) as large
as necessary.
•
For observation, adjust the illumination angles as large as possible.
•
Use color filter or, in special cases a diffusor.
Tonometry
•
The measuring prisms must be disinfected and undamaged.
Therefore, we recommend the use of several measuring prisms.
•
The instrument table must be horizontal to avoid movement of the slit
lamp with attached measuring prism towards the patient. This is of
particular importance when taking tonometric measurements without
locking the instrument base.
Therefore, we recommend that you always fix the instrument base as
soon as the measuring prism touches the cornea.
•
Refer to the manual of the AT 020 or AT 030 applanation tonometer.