3.3
VNG – Place Goggles on Patient
The video goggles contain video camera lenses and mirrors. The video image displays on the monitor. For more inform-
ation about how the goggles function, refer to the User Manual.
A. Place the VNG video goggles on the patient. Proper placement of the goggles is very important. Refer to the User
Manual for detailed instructions.
1. Make sure the mirror is clean. Avoid touching the mirror while placing the goggles on the patient.
2. Place the goggles on the bridge of the patient’s nose.
3. Make sure the back head strap is over the back of the patient’s head below the inion (bump on the lower part of
the skull.) Replace worn head straps. See the User Manual.
VNG Video Goggles
A.
Fine focus adjustment knob. Turn this knob
to fine tune (focus) the eye images in the
Video Adjustments dialog box. Focus adjust-
ment may be needed if the patient has deep-
set or protruding eyes.
B.
Horizontal positioning knob. Turn knob to
adjust the horizontal position of the eyes.
Adjustment may be needed if the patient has
wide-set or close-set eyes.
C.
Vertical positioning knob. Turn knob to adjust
the vertical position of the eyes.
B. VNG: Go to
Step 14 VNG – Center and Focus the Video Image
to adjust the video image.
C. Go to
.
Otometrics - ICS Chartr 200 VNG/ENG
17
3 Prepare Patient for Testing
