Prepare Patient; Start Calibration - Interacoustics EyeSeeCam Instructions For Use Manual

EyeSeeCam vHIT Instructions for Use – EN

4.3.1 Prepare Patient

Begin by selecting Prepare and instructing the patient.
Figure 4-11 Head calibration headings
The head movements can be passive, the clinician moves the patients head, or active where the patient
moves their own head.
The patient is instructed to keep his eyes on the target on the wall and oscillating the head gently, first
around the yaw axis (like shaking your head "no") and, after a few oscillations, around the pitch axis (like
nodding your head "yes"). The examiner can perform the head calibration by standing behind the patient
and grabbing the head the same way as during head impulse testing of the lateral canals. About five
sinusoidal oscillations in both yaw and pitch directions need to be performed at moderate peak head
velocities not exceeding 100 deg/sec. The total duration of the head calibration is on the order of 15 sec.

4.3.2 Start calibration

Select Start to begin the test and select stop when finished.
Figure 4-12 Diagram showing the different planes of head rotations.
During the head calibration procedure, you will see a graphical representation of the data. The areas of
interest to you are (a) Head velocity in degrees per second, (b) eye position in degrees, (c) a circular plot
of roll/pitch and (d) yaw/pitch
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