Zeiss HUMPHREY 720i User Manual page 83

TEST PARAMETERS AND STRATEGIES
REV. B 02/03 PN 51680-1
Threshold Parameter
Parameters Settings
Foveal Threshold
Off
On
Stimulus Size I, II, III,
IV, V
Stimulus Color
White
Red
Blue
Fluctuation On
Off
Description
A threshold value for the fovea will not be
measured.
A threshold value for the fovea will be determined at
the beginning of the test. The foveal threshold test
presents stimuli inside the Small Diamond fixation
target; the Small Diamond will automatically be illu-
minated.
Refer to Section 5: "Foveal Threshold" for details on
performing this supplemental test.
Same as Screening Parameters. Model 720i has only
the Size III stimulus available for testing.
Same as Screening Parameters
Same as Screening Parameters
Same as Screening Parameters
Threshold values for ten (10) pre-selected points
are retested to determine the variability of the
patient's responses.
Threshold values for the retested points are printed
on the numeric printout and appear in parentheses
directly below the first test result.
Fluctuation values which differ significantly from
normal are flagged with appropriate "p" (probabil-
ity) values.
Threshold values for pre-selected points will not be
determined twice. Some points may be retested even
if fluctuation is off. Off is the default setting when
Blue-Yellow is turned on.
Note: Short-term Fluctuation (SF) and Corrected
Pattern Standard Deviation (CPSD) values will
not be available if fluctuation is turned off.
Neither SF or CPSD are displayed with SITA Stan-
dard or SITA Fast tests.
HUMPHREY FIELD ANALYZER II - i series
4-9