Zeiss AT 030, Product Documentation Set

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7 Maintenance Instruction for use
AT 030 7.4 Checking the device
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ð
Then, tighten the left set screw.
ð
The left set screw is only accessible if the tonometer holder
is pivoted approx. 30° to the right from the stop notch.
u
If the measuring prism is to the left of the center of the field of
view, proceed as follows:
ð
Loosen the left set screw slightly.
ð
Then, tighten the right set screw. The left set screw is only
accessible if the tonometer holder is pivoted approx. 30° to
the right from the stop notch.
u
Adjust alternately until the measuring body can be seen in the
center of the visual field.
u
Then retighten both set screws alternately.
Checking the achieved adjustment status
u
Perform a final check of the adjustment status.
u
If necessary, repeat the steps in sections Setting the correct
height in the field of view (height adjustment A) and Setting
the lateral middle position in the field of view (lateral
adjustment D).
u
If required, move the tonometer to the left alignment hole of
the base plate and check the adjustment of the left eyepiece.
7.4 Checking the device
After transport of the device, check the condition of the device as
follows:
Checking while mounted on slit lamp
Action
u
Move the tonometer to the measuring position.
u
Set the scale reading to 0. The measuring prism can easily be
moved back and forth.
u
Set the scale reading to 1. The measuring arm with the
measuring prism must move immediately towards the front end
position.
NOTE! If the measuring arm with the measuring prism does
not move to the front end position, discontinue using the
device. Consult ZEISS Service.
Please also observe the infor-
mation in the Metrological check [
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33].