Zeiss Humphrey Matrix 800, User Manual

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Humphrey Matrix User Manual 2660021138935 Rev. F 2015-11
Maintenance 10-9
Calibration
The Humphrey Matrix Visual Field Instrument does not require scheduled calibration. The
instrument calibration is automatically checked each time the instrument is powered ON
and at the start of each test to be sure the unit is properly calibrated. If the instrument
detects the need for calibration, the Operator LCD Display will display a needs calibration
warning. Perform calibration at any time, not only when requested by the instrument.
Calibration will take approximately 15 minutes to complete.
To calibrate the instrument, select Help (F6) > Calibration ( Figure 10-5 ).
Figure 10-5 Calibration Screen
Before selecting the Calibrate button in the C
ALIBRATION
Screen, make sure the Patient
Eyepiece is covered with the Calibration Cap. Once the Patient Eyepiece is covered, select
Calibrate. There is a prompt to ensure the Patient Eyepiece is covered. If the Calibration
Cap is not available, substitute something that will temporarily block light from entering
the Patient Eyepiece (black cloth over Patient Visor, etc.) or perform the calibration in a
completely darkened room. The Operator LCD Display will indicate if there is too much
ambient light to complete the calibration. A Calibration Progress indicator is provided.
The Advanced >> button displays Factory Calibration information reserved for Technical
Service use. The button toggles between Advanced >> and Basic <<.