Position Too High / Low; Incorrect Pressure - Haag-Streit AT 910 Instructions For Use Manual

Whole upper semicircle – part of the lower semicircle (6)
Measuring prism not centred on the eye, eye still too far to the
right.
Using the control lever, move the slit lamp to the right.
Whole lower semicircle – part of the upper semicircle (7)
Measuring prism not centred on the eye, eye still too far to the
left.
Using the control lever, move the slit lamp to the left.
Only part of the lower semicircle (8)
Measuring prism not centred on the eye, eye much too far to
the left.
Using the control lever, move the slit lamp to the left.
Correct setting! (9)
Two semicircles appear exactly in the middle of the eyepiece.

5.7.3 Position too high / low

Only part of a semicircle in the upper half (10)
Measuring prism not centred on the eye, eye far too high.
Using the control lever, move the slit lamp upwards.
© HAAG‑STREIT AG, 3098 Koeniz, Switzerland – HS‑Doc. no. 1500.7006000.04240 – 24. Edition / 2018 – 04
01-IFU_AT900-7006000-04240_eng.indd 11
SVENSKA NEDERLANDS PORTUGUÊS ESPAÑOL ITALIANO
6 Nearly entire circle above, incomplete circle below (12)
Measuring prism not centred on the eye, eye still too high.
Using the control lever, move the slit lamp upwards.
Two incomplete circles, the larger one on top (13)
7
Measuring prism not centred on the eye, eye still too high.
Using the control lever, move the slit lamp upwards.
Correct setting! (14)
8
Two semicircles appear exactly in the middle of the eyepiece.

5.7.4 Incorrect pressure

9
The outside borders of the fluorescein bands are in contact
with each other (15)
Not enough pressure.
Increase the pressure slightly by rotating the knob on the
tonometer.
Fluorescein bands are superimposed to form a band (16)
10
Pressure slightly too low.
Increase the pressure slightly more by rotating the knob
on the tonometer.
FRANÇAIS DEUTSCH ENGLISH
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03.05.2018 10:11:16
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