Zeiss Humphrey II-i series, Руководство пользователя

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STATPAC Analysis & Printing
Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
7-2
Introduction To STATPAC Analysis
The Humphrey Field Analyzer II- i ’s statistical software, STATPAC, provides immediate expert system
analysis of threshold visual field test results. With STATPAC you can analyze test results at the time of
examination, store test results and analyze them at your convenience, or recall previously stored
tests to analyze for comparative purposes.
STATPAC includes several exclusive features to help you judge visual field change.
• Using results from a single test, STATPAC can point out suspicious areas that otherwise might
not be evident until subsequent tests were done.
• STATPAC can identify areas that look suspicious but which, in fact, compare favorably with
normals data.
• Using results from a series of tests, STATPAC provides a highly sensitive and informative analysis
of changes in the patient’s visual field over time.
• STATPAC’s advanced Guided Progression Analysis (GPA) helps you identify and monitor
increasing visual field loss due to glaucoma.
Prerequisites for STATPAC Analysis
If you intend to run a STATPAC analysis, always take two important steps during testing:
1. Make sure that the patient’s name and date of birth are entered exactly as they were recorded
on previous tests. Use the RECALL PATIENT DATA button, as described in “Recalling Patient
Data,” on page 3-14 , to reduce patient-data entry errors.
2. Save the test results to disk (hard drive and a USB storage device).
These steps will avoid errors when using printouts that require multiple files for the same patient.
Also, because STATPAC uses an age-adjusted model, the analysis cannot be performed properly
unless you provide the patient’s date of birth.
STATPAC Threshold Formats
STATPAC offers statistical analysis and printouts in several formats: Single Field Analysis, Overview,
Change Analysis, and the Guided Progression Analysis described in
Chapter (8), "Guided
Progression Analysis (GPA)."
The Single Field Analysis, as its name implies, analyzes the results of a single threshold test. This is
the default printout which provides the most information for a given test.
The Overview presents the results of up to sixteen (16) tests for convenient comparison. You may
view multiple test results per page for easier analysis.
The Change Analysis compares up to sixteen (16) tests and analyzes indices of change in the
patient’s field over time, flagging significant indicators for your attention.
The Guided Progression Analysis highlights changes from a Baseline which are larger than the
inter-test variability found in stable glaucoma patients giving you a more accurate assessment of
glaucoma progression.
Note: Historical information pertaining to Full Threshold and FastPac printouts or Glaucoma Change
Probability Analysis can be found in
Chapter (L), "Reference to Older Test Strategies." .