4
Correct measurement position
The forehead
Look straight ahead and the
support A rests
tonometer is at a 90-degree
on your forehead
angle to your face. The probe is
and the cheek
about 5 mm from your eye and
support B rests
points perpendicularly to the
on your cheek.
center of your eye.
90°
START
<90°
If you see a red light in the probe
base, the tonometer is tilted too
much downwards. You should
straighten your posture and lift
your chin.
Positioning the tonometer is instructed in the
following section.
9