20
5. Keep both eyes open. Covering the eye not being tested may help
you see the rings more clearly.
6. Shorten the supports by rotating them clockwise two clicks at a
time until you only see a symmetrical green ring. The tonometer is
now at the correct distance from your eye.
START
5 mm (0.2 inches)
8.5 Measure your eye pressure
1. Start the measurement when you see only a symmetrical green ring.
Press the Measure button once. The probe gently touches your
eye.
1x
START
2. A single beep indicates a successful measurement. Continue taking
measurements, until you hear a long beep and the light in the probe
base turns off.
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