Tomey AL-2000, Руководство оператора

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AL-2000 Biometer & Pachymeter
18
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In the event that a spike occurs between
the back of the lens and the retina (e.g.,
due to a vitreous hemorrhage), manually
reposition the retinal cursor (2) by pressing
the retinal cursor shift keys (1).
The waveform to the right of this cursor
location is taken as the retinal waveform.
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1. Select the following settings:
Eye type/converted veolcity: Aphakic/1,532 m/s
Gain:
8
Measurement mode: Hand-held
2. Apply a drop of water to the upper and to the lower
test piece surfaces.
3. Apply the biometer perpendicular to the upper sur-
face. Up to 15 measurements will be automatically
taken, each indicated by a beep. When measurement
is complete, a higher-pitched beep will sound.
4. Repeat steps 2 and 3 for the lower test piece surface.
Expected results:
Waveform:
A representative waveform is shown in fig. 2.
Average AXIAL value (shown above the waveform):
Upper surface: 22.0 mm ± 2 mm
Lower surface: 16.0 mm ± 2 mm
Check the performance of the AL-2000 by using the biometry test piece (found in
the box containing the biometry probe). (See fig. 1.)