Zeiss Humphrey II-i series, User Manual

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Setting-Up Tests
Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
3-24
Preparing the Patient
How well your patient understands the test procedure and how comfortable he or she is while
taking the test directly influences the reliability of the test results.
Patient Instructions for Static Testing
Explain the test procedure clearly and completely. Answer all patient questions before starting. Use
the following patient instructions as a guide, but remember to tailor your instructions to the
patient’s individual needs.
“This test will measure your central and side vision. It is important that you always look straight
ahead at the steady yellow light (Point to yellow fixation light). Other lights will flash one at a time
off to the side. Some will be bright, some dim. Press the button whenever you see one of these
lights (Give patient the response button). You are not expected to see all of them.” For threshold
tests: “The test is designed so that you may see fewer than half of them.”
“If you want to rest, hold down on the button (demonstrate to patient). The test will resume when
you release the button. We test one eye at a time. Blink normally so your eye does not get dry. A
good time to blink is whenever you push the response button. When your test is over, you will hear
two beeps. You may sit back at that time.”
Note: Instructions for Kinetic Testing differ slightly. See Chapter 13 for details.
Occluding the Non-Test Eye
Position the eye patch over the non-test eye so that it completely blocks vision, as shown in the
illustration. Make sure nothing interferes with the vision of the test eye. For example, if the patch is
secured with an elastic band, position the band above the eyebrow of the test eye as shown.
Seating the Patient
To increase test reliability, take all steps necessary to ensure patient comfort:
• Adjust the table height.
• Adjust the seat height.
• Slide the instrument towards the patient (if your Power Table is fitted with the optional slider
accessory).
• Check that the patient is relaxed and holding the response button.
Dimming the Room Lights
You should perform your testing with the HFA II- i in a dimly lit room. There should be enough light
present to ensure the safety of the user and patient. Any light present during testing should be
directed away from the patient and the HFA II-
i bowl opening. We also suggest positioning the HFA
II-
i
away from light sources. Avoid light from doorways or external light sources. Should the room
lighting be very bright, the HFA II- i will post a warning and not allow testing to continue without the
lights being lowered.