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- Adjust the chin rest height by chin rest control knob until the eye height mark of the chin rest
reaches the same height as the patient’s eye
- confirm that the height mark of the measuring window is at the height of the patient's visual line
Eye height mark
Eye height mark of
Measuring window
Chin rest control knob
[Height adjustment of patient]
! CAUTION
Do not have patient place his or her hand or finger on top of the chin rest’s lower part. Hand
or finger may get injured.
Cleanse forehead rest with solvent such as ethanol every time patient changes to prevent
infection.
Replace chin rest paper every time patient changes to maintain cleanness.
4. Measurement location and focusing
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