User`s guide
230750-101, Rev. C. 19
Interpreting the IOP Measurement
During the measurement, the LCD shows the IOP and cumulative
number of applanations detected. Once 6 applanations are
achieved, the LCD will display the average IOP in millimeters of
mercury (mmHg), along with a statistical condence indicator.
A statistical condence indicator of 95 means that the standard
deviation of the valid measurements is 5% or less of the number
shown. The higher the statistical condence indicator, the more
reliable the measurement.
If the statistical condence indicator is 80 or 80-, a repeat
measurement is recommended.
Figure 4. Closeup of TONO-PEN AVIA VET Tonometer LCD
showing an IOP measurement of 16 and statistical
condence indicator of 95