Zeiss Humphrey II-i series, Руководство пользователя

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Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
Test Parameters and Strategies 4-9
Blue-Yellow (SWAP)
(SITA-SWAP with
24-2 test)
OFF/ON Model 745
i
and Model 750
i
(optional on Model 740
i
) can perform
SITA-SWAP (Blue-Yellow) testing. A Size V blue stimulus is presented on a
yellow background. When a 24-2 test is chosen and the Blue-Yellow option
is selected, the SITA-SWAP strategy will be the default strategy. See
Chapter (9), "Short-Wavelength Automated Perimetry (SWAP)," for more
information.
Foveal Threshold Off A threshold value for the fovea will not be measured.
On 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 illuminated.
Refer to “Foveal Threshold,” on page 5-7 , for details on performing this
supplemental test.
Stimulus Size I, II, III, IV, V Five stimulus sizes (diameters) are available on most instrument models.
They range from Size I (smallest) to Size V (largest). Model 720
i
has only
the Size III stimulus available for testing. SITA Standard and SITA Fast tests
only use the Size III stimulus with white-on-white testing. Only the Size V
stimulus is used for SITA-SWAP.
Stimulus Color White White stimulus projected onto white bowl background. SITA Standard and
SITA Fast only use the white stimulus.
Red Red stimulus projected onto white bowl background.
Blue Blue stimulus projected onto white bowl background.
Fluctuation On Does not apply to any SITA strategy. Available for Full Threshold and
FastPac Tests only.
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” (probability) values.
Off Threshold values for pre-selected points will not be determined twice.
Some points may be retested even if fluctuation is turned off. Off is the
default setting when the Blue-Yellow parameter is set to 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 Standard or SITA Fast tests.
Table 4.2 Threshold Test Parameters
(Factory default parameter settings appear in bold print.)
Threshold

Parameters
Parameter

Settings
Description