Guided Progression Analysis (GPA)
Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
8-24
Figure 8.11b Correction of a Poor Quality Default Baseline – Follow Up
The Out of Range “X” is no longer present where the blind spot from the other eye had been (as
shown by the arrows pointing to the former location of the “X” in three different spots on this
illustration). There are a few scattered points flagged in the Progression Analysis Probability Plot for
each test, but they are not repeatable enough to raise the GPA Alert.