12 Perform a Measurement
Instruction Manual Corvis® ST (G/72100/XXXX/EN 1019 Rev01) 33 / 80
Ask the patient to place his or her head on the chin and head rest.
The eye height marking (2) between the chin rest and the headrest
should be located roughly at the centerline of the patient's eye.
Attention
Risk of contact of the patient's eye with the air nozzle
Fast and/or uncontrolled movements may cause the air nozzle to touch
the patient's eye.
When operating the Corvis® ST, move it carefully toward the
patient's eye.
If necessary, set the safety stop again, see sec. 10.5.2, page 21.
If necessary, adjust the height of the chin rest with the buttons.
In addition, you can also adjust the height of the measure head by
turning the joystick:
Turn it clockwise to move the measure head upwards.
Turn it counter-clockwise to move it downwards, see sec. 12.2.2,
page 35.
To prepare the patient prior to the measurement:
Explain to the patient what will happen next to help him/her relax:
"A little air will be blown into your eye. Don't let it scare you. Please
be patient and relax for a moment."
Ask the patient to not blink during the measurement, otherwise the
measurement results will be falsified.
1 Head rest 3 Chinrest
2 Mark eye height
Abb. 12-2: Position patient according to the markings
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