elektron eye technology Henson 9000, Manual, Page: 24 / 155

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Hens o n 9000 Per imeter Us er M a nua l
E l e k t r o n E y e T e c h n o l o g y 2 0 1 8
3 .1 .1 .3 M issed stim u li in m u ltiple stim u lu s su prath resh old test
It is not unusual for a patient with no visual field loss to miss the occasional stimulus. To
differentiate between these and misses due to genuine field loss, the pattern should be
presented a second time.
If the incorrect number is given twice then establish which stimuli were missed by:
1. Asking the patient where they saw stimuli. It is often helpful at this stage to tell the
patient to consider the bowl as a clock face and to give the hour positions of the
stimuli.
2. To mark a location as missed move the mouse to the missed location, click the left
button and from the pop up select
.
To correct mistakes (i.e. remove stimuli marked as missed) repeat 2 but select .