Zeiss HUMPHREY 720i User Manual - page 39

GENERAL OPERATION

REV. B 02/03 PN 51680-1

HUMPHREY FIELD ANALYZER II -

 i

series

2-13

Accessing head tracking

1

Start at the System Setup screen. Select the Head Tracking drop-down menu.

(model 750i)

2

 Choose between ON and

OFF.

Note:If Head Tracking is turned on during testing and the patient moves, the instrument

will adjust the chin rest in small, 0.3 mm increments until the patient returns to the

original position. This feature only works if Gaze Tracking has been successfully initial-

ized and the trial lens holder is in the Up position. For additional information, see

Section 5: “ Head Tracking”.

Accessing the vertex

1

Start at the System Setup screen. Select the Vertex Monitor drop-down menu.

monitor (model 750i)

2

 Choose between ON and

OFF.

Note: When the Vertex Monitor is turned on, a beep will sound if the patient has backed

away from the trial lens during testing. Although the test will not pause, a message will

remain on the screen until cleared by the operator. This feature only works if Gaze

Tracking has been successfully initialized and the trial lens holder is in the Up position.

For additional information, see Section 5: “Vertex Monitor”.

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