4
Correct measurement position
The forehead
support A rests
on your forehead
and the cheek
support B rests
on your cheek.
90°
START
Look straight ahead and the
tonometer is at a 90-degree
angle to your face. The probe is
about 5 mm from your eye and
points perpendicularly to the
center of your eye.
<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