REV. B 02/03 PN 51680-1
HUMPHREY FIELD ANALYZER
II -
i
series
TESTING
5-8
Gaze tracking initialization
The advantages of Gaze Tracking were previously explained in this section. If gaze monitoring
is active, the Gaze Tracking initialization will occur before the testing begins.
1
From the appropriate
testing screen, press
the START button.
2
When gaze monitoring
is engaged, you will
automatically get an operator
message.
3
Position the patient so that
the patient’s test eye is
located in the center of the
video eye monitor (within the
small, central box). Use the
chin rest control to adjust the
patient. The cross-hatch sign
should be in the middle of the pupil, as shown.
4
Instruct the patient to look at the fixation target and try not to blink. Ask the patient to
open his or her eyes wide for about a count of twenty, or until you say the process is over.
5
Press START to initiate gaze setup. Pressing CANCEL returns you to the Start of Test screen.
Notes:
1.
Patients with droopy eyelids should keep their eyes open as wide as possible. Do not
adjust the chin rest during Gaze Tracking Initialization.
2.
To be effective, Gaze Tracking needs the patient to be looking at the Central fixation
target. Do not attempt to use gaze tracking if using one of the lower fixation targets
(Small diamond, Large diamond, Bottom LED). Use Blind Spot instead. The blind spot
monitor is off-set the appropriate amount to compensate for the different angle of
fixation when using the lower fixation targets.
5.htp
3/14/03, 3:15 PM
8
Содержание HUMPHREY 720i
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