Zeiss HUMPHREY 720i, User Manual

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REV. B 02/03 PN 51680-1 HUMPHREY FIELD ANALYZER
II -
i
series
TESTING 5-11
Printing partial If a test is paused or cannot be run to completion, it may be printed by pressing the PRINT
tests FUNCTIONS icon button. Paused tests may be resumed after printing and saved when
completed. Partial tests cannot be saved in most cases. Full field tests may be saved at the
completion of the central part of the visual field.
Fixation monitoring The test will pause when the FIXATION button is pressed. It will remain paused while the
fixation monitoring screen is displayed. Pressing any of the available buttons will change the
parameter for the remainder of this test only. All monitoring devices will revert to the previous
settings for testing the next eye.
A “ghosted” button indicates either that choice is not available or the feature is not an option
with your model HFA II. After one of the following options is chosen, the test will continue.
RE-TRY TO INITIALIZE GAZE
This will repeat the initialization process for Gaze Tracking. The Head Tracking and Vertex
monitoring systems will be re-initialized at the same time. Appropriate situations to re-
initialize gaze are:
• The patient dramatically shifted his or her eye position.
• The Gaze Graph indicates poor fixation even though the patient was fixating in a steady
manner.
• Many downward markings show on the Gaze Graph indicating that Gaze Track was
having trouble detecting the patient’s gaze direction.
• Head tracking moved the patient’s head too far in the wrong direction.
• The vertex monitor alarm was sounding too often, even with good head positioning.
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