Zeiss Humphrey II-i series, User Manual

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Guided Progression Analysis (GPA)
Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
8-22
Figure 8.10b Poor Quality Default Baseline – Follow Up
On this Follow-up printout, you can see by the date of the first Follow-up test C that it was done on
the same day as the incorrect second Baseline test A seen on the previous page. The technician had
corrected the mistake by having the patient redo the test. Unfortunately, the incorrect test was not
removed from the GPA list.
Note the X in the Progression Analysis plot pointed out by the arrow D. This point corresponds to
the false scotoma created by the Blind Spot of the second Baseline test B. The proper thing to do is
to remove the second Baseline test from the GPA list and have the HFA re-process the GPA.
C
D
D
D