Zeiss Humphrey II-i series - Page 563

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- 2 6 , 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- 2 8 , 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