Zeiss Humphrey II-i series, User Manual

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Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
Troubleshooting M-5
Vertex Monitoring
Vertex Monitoring does not work • HFA not Model 750i.

• Vertex Monitoring not turned on ( 2-15 ).

• Trial lens holder not in Up position ( 5-6 ).

• Gaze Tracking was not initialized at the start of the test ( 5-8 ).
Vertex Monitoring alarm beep goes off too often • Patient moving away from trial lens - reposition patient ( 5-6 ).

• Vertex Monitoring needs to be reset - press RE-INITIALIZE VERTEX ( 5-6 ).

• Turn off Vertex Monitoring - press TURN VERTEX OFF ( 5-12 ).
Pupil Size
Not being automatically displayed on printout or
on Patient Data 2 screen • HFA not Model 750i.

• Gaze Tracking was not initialized ( 5-8 ).

• Auto pupil turned off - turn on at System Setup screen ( 2-26 ).
External Keyboard
Does not work • May not be compatible with HFA II- i ( 1-26 , 2-6 ).

- try another keyboard.

• Plugged in after HFA II-
i
was powered on ( 1-31 ).

- plug into HFA II-
i
before HFA II-
i
powered on.
• Not plugged in properly ( 1-28 , 1-29 ).
Glidepad, Trackball or Mouse
Does not work • May not be compatible with HFA II- i ( 1-28 , 2-7 ).

- try a different trackball/mouse.

• Plugged in after HFA II-
i
was powered on ( 1-31 ).

- Turn off. Plug into HFA II- i and power on HFA II- i .
Does not connect to HFA II- i • Needs adapter plug ( 1-26 ).
SWAP (Short-Wavelength Automated Perimetry)
SITA-SWAP not available with Blue-Yellow
switched to on • Wrong test pattern used ( 9-3 ).

- Choose a 24-2 Threshold test, then turn Blue-Yellow on.
Grayscale looks very dark • May be “normal” for Blue-Yellow. The eye is less sensitive to the blue stimulus.

- Gray scale is the same one used for White-on-White ( 9-8 ).

- Use Total and Pattern Deviation plots for diagnosis ( 9-8 ).
• Patient had difficult time recognizing when to respond ( 9-3 ).

- Re-instruct the patient and repeat the test.
Table M.1 Troubleshooting Table
Problem Possible Cause or Solution