4
Collect Patient Data
4.1
VNG – Center and Focus the Video Image
A. Click the
New Test
tab on the Main Window and choose the eye(s) to be tested.
B. Click
F7 Video Adjust
to display the Video Adjustments dialog.
C. Adjust the eye image.
1. Ask the patient to look straight ahead.
2. Move the goggles to center and level the pupils. Make sure the pupils are inside the boxes, as close to the center
as possible.
3. Tighten the back head strap until the goggles are snug. The goggles should fit securely so they will not move dur-
ing positional testing.
4. Straighten and tighten the top head strap to assist in positioning the goggles on the patient’s face and positioning
the pupils in the box.
Video Adjustments Dialog Box, Both Eyes
5. Use the goggle horizontal
and vertical positioning
knobs to center each pupil
image.
6. Use the goggle focus knobs
to focus each image.
7. Repeat as needed to center
the pupils and focus the eye
images.
Note
•
For monocular testing, only the selected eye will be visible. If testing both eyes, make sure both eye images dis-
play, both pupils are centered, and both eye images are in focus.
D. Use the goggle controls (knobs) if needed to align the patient’s eyes and focus the image while the patient looks
straight ahead.
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Otometrics - ICS Chartr 200 VNG/ENG
4 Collect Patient Data