Zeiss Humphrey II-i series - Page 562

Troubleshooting
Humphrey Field Analyzer II- i series User Manual 2660021145640 A
M-4
Printout does not include all eligible tests for a
patient when printing Overview or Guided
Progression Analysis (GPA) printout
• Some test parameters not valid for STATPAC (7-2) or GPA.
• Patient name or date of birth incorrect on some tests (3-8, 10-14).
• Search via recall patient data - fix with Merge Patients feature (3-14, 10-12).
• Sixteen (16) test maximum for Overview and GPA printouts (7-8, 8-3).
Blind Spot Monitor
Cannot change Blind Spot size • HFA II- i uses same stimulus size for testing and Blind Spot check (4-8).
Cannot locate blind spot • Realign patient (3-26).
• Verify that proper eye is being tested (5-17).
• Check to make sure the patient’s non-testing eye is occluded (5-17).
• Make sure patient is not looking around but fixating on fixation light (5-17).
• Select FIXATION button and then press RE-TRY TO FIND BLIND SPOT (5-12).
Blind Spot alarm beep keeps sounding • Same as “Cannot find blind spot” above.
• Blind Spot may be turned off during test by pressing FIXATION (5-11).
Gaze Tracking
Gaze Tracking will not initialize • HFA not Model 740 i , 745 i , or 750 i .
• High power trial lens being used (5-13).
• Droopy eyelid - ask patient to open eye wider during initialization (5-13).
• Interfering eyelashes - ask patient to
open eye wider during initialization.
• Small pupils (5-13).
• Excessive eye movement or blinking (5-13).
• Excessively large or dilated pupils (5-13).
• Dry eyes, cloudy media or dark iris (5-13).
• Deep-set eyes (5-13).
Head Tracking
Head Tracking does not work • HFA not Model 750 i .
• Head Tracking not turned on (2-14).
• Trial lens holder not in Up position (5-5).
• Gaze Tracking was not initialized at the start of the test (5-4).
Head Tracking alarm activates too often • Patient’s chin not moving with the chin rest - re-instruct patient (5-5).
• Reset Head Tracking (5-5).
• Turn off Head Tracking - press TURN OFF HEAD TRACKING (5-12).
Table M.1 Troubleshooting Table
Problem Possible Cause or Solution