Icare tonometer ONE manual
English
8
www.icaretonometer.com
Inserting probe into probe base
3.
After the probe has been inserted, be careful not to point the tonometer downward to prevent the probe from falling out.
4.
Press the measurement button once to activate the inserted probe. During activation the device magnetizes the probe (probe
moves rapidly back and forth).
Once the probe is activated, the PROBE LED remains lit. The tonometer is now ready to take a measurement.
MEASURING INTRAOCULAR PRESSURE
A measurement sequence is a set of six measurements. The measurement value, shown after all six measurements are taken, is
displayed on LED display. The measurement value is an average of four successful interim measurements of those six interim
measurements performed. The highest and the lowest value is left out from final value displayed. If there is too much variation in
average (SD) error code REPEAT is lit on LED display. See error messages and indicators.
In the automatic mode the six measurements in a sequence are taken automatically and in the normal mode the user must take
each measurement individually until all six measurements are taken.
To measure intraocular pressure:
1.
Check that the tonometer is set up correctly and the measurement position is adjusted by a doctor or a nurse.
2.
The patient should relax, and look straight ahead at a specific point while keeping eyes wide open.
Patient with the tonometer correctly positioned
3.
Bring the tonometer near the eye in front of a wall mirror as shown in Figure (Measurement step). Move the tonometer closer so
that the forehead and cheek support touch the skin. The distance from the tip of the probe to the center of the cornea must be
4-8 mm (5/32-5/16 inch).
4.
Press the measurement button lightly to perform the measurement, taking care not to shake the tonometer. The tip of the probe
should make contact with the central cornea. The way you take measurements depends on the chosen mode.
In
Automatic
mode, press the measurement button
once
to perform the measurement. A long beep indicates the end of one
measurement sequence (six measurements). In automatic mode single measurement values are not shown.
In
Normal
mode, press the measurement button to take one individual measurement at a time. A short beep sounds after each
measurement. A long beep sounds when the six measurement sequence is complete.
In addition to showing the IOP range, the accurate IOP value is stored in the internal memory.
Icare ONE is constantly controlling the measurement position. When too far or near from eye or if the measurement angle is too tilted, the
tonometer beeps twice and displays a red LED indicating an error (Position). Press the measurement button again to clear the error message and
follow the corrective actions according to indicators described on page 10.
