Elektron Technology HENSON 8000, User Manual

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30 Henson Perimeter User Manual
© 2017 Elektron Technology
3 .1 .2 .1 P a t ie n t in s t ru ct io n s
It is important that the patient understands w hat they need to do during the
test.
Below is a set of instructions that w e have found to w ork w ell.
The eye not being tested should be occluded and the test eye must be
correctly aligned w ith the patient sitting comfortably.
Threshold set by age
The test is going to take about 2 minutes.
You should press the response button when you see a light flash.
Some presentations are deliberately blank so do not press the button unless you
are sure you saw a light flash.
You must keep looking at the central red light and keep your eye as still as possible.
If you want to take a break, you can hold down the response button. The test will
pause until the response button is released.
The first few presentations are a demonstration, so do not worry if you make a
mistake at the beginning.
Add when setting the threshold by measurement
At the beginning of the test the light will be very dim.
Do not worry if you do not see many lights
Only press the button when you are sure.
The lights will brighten up later on.