Zeiss Humphrey II-i series, User Manual

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Introduction & Instrument Setup
Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
1-20
• More sensitive testing; advances in algorithm development has made static perimetry superior
to the kinetic method for identifying defects
• Ease of operation; menu-driven software makes automated perimeters easy to learn and use
The Humphrey Advantage
Over 25 years of advancements in research, design and development are reflected in the Humphrey
Field Analyzer II-
i
. Equally important, the latest models represent improvements suggested by users
from around the world who generously have shared their best ideas with Carl Zeiss Meditec. With
tens of thousands of Humphrey Field Analyzers in use worldwide, Carl Zeiss Meditec took on the
challenge of improving the testing experience for the patient, the operator, and the practitioner.
Here are some of the features which differentiate the HFA II-
i
from other autoperimeters that are
available.
Ergonomic Design
The HFA II-
i
relieves many physical discomforts associated with visual field testing. The chin rest and
bowl shape allow patients to assume a more natural and relaxed sitting position when taking tests.
The power table improves patient comfort by permitting the HFA II-
i
to adjust to the patient instead
of the patient adjusting to the instrument. This especially is important for wheelchair bound patients.
The patient response button is easy to operate, especially for patients who have limited use of their
hands; for instance, patients with arthritis. The uniquely-shaped button may be placed on a knee,
lap or the arm of a chair for better leverage. The cord angles away from the patient for greater
comfort. The response button beeps each time it is pressed to give immediate feedback to the
patient and to the operator.
Easy Operation
Sophisticated instrumentation need not be complicated. The HFA II-
i
offers a number of features
intended to make the instrument easier to use:
• Touch screen design speeds data input.
• Menu and icon commands simplify operation.
• On-screen video eye monitor is standard on all models.
• Confirmation screens reduce unintentional data loss.
• A keyboard, glidepad, trackball or mouse can be connected to the HFA II-
i
as optional data
input devices.
• An optional keyboard with built-in glidepad is available for HFA models that were not delivered
with one.
Rapid Testing
Carl Zeiss Meditec’s SITA (Swedish Interactive Thresholding Algorithm) testing strategies allow
precise visual field measurements with unprecedented speed. SITA is a rapid, reliable,
state-of-the-art autoperimetric technology that is available only with the Humphrey Field Analyzer.
With the SITA strategies, users can obtain visual field information in half the time it takes using
conventional testing algorithms without compromising accuracy. For further explanation of the SITA
testing strategy, refer to
Appendix (K) .