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Operation
Humphrey FDT User Manual
2660021149532 Rev. B 2015-11
3-8
the test if their lenses or contact lenses are tinted or change contrast based on lighting
conditions (photochromatic). Tests may be taken with bifocal or progressive lenses (unless
the progressive lenses have more than 3D equivalent sphere distance correction).
Explain the Test Procedure to the Patient
“A demonstration of the test is running now. Can you see the black dot in the center and
the entire lit video screen? You need to stare at the black dot in the center of the screen
during the entire test.”
“From time to time, you will see patterns of flickering black and white vertical bars that will
briefly appear in different areas of the screen. The patterns will sometimes be very faint and
at other times be very distinct. You are not expected to see the bar patterns at all times.
Each time you see the flickering black and white vertical bars of one of the patterns, press
the response button once. Can you see these patterns in the demonstration running now?
You may practice now by pressing the Button to respond to the patterns.”
“It is OK to blink and a good time to blink is when you press the response Button. If you
need to rest or ask questions during the test, you can pause the test at any time by
pressing and holding down the response Button. Do you have any questions? Do you
understand how to take the test?”
“I will now start the test. There will be a few brief flashes and then the test will begin. Press
the response Button once each time you see the flickering black and white vertical bars of
one of the patterns, even if the bars are very faint. Please remember to stare at the black
dot in the center of the screen during the entire test.”
Note: A separate demonstration test is available from the
FDT MAIN MENU
to help
facilitate the patient’s understanding of the test, if needed. To run a practice test, select
RUN DEMONSTRATION (2nd BLUE Button from the top)
from the
FDT MAIN
MENU
. A demonstration of the test stimulus automatically begins. The patient should
use this time to become familiar with the test and practice using the
PATIENT
RESPONSE BUTTON
(Ask the patient to look into the Patient Eyepiece within the
Patient Visor and then test the procedure.) Press the GREEN Button to cancel the
practice test and return to the
FDT MAIN MENU.
Содержание Humphrey FDT 710
Страница 1: ...Humphrey FDT Model 710 User Manual...
Страница 19: ...Humphrey FDT User Manual 2660021149532 Rev B 2015 11 Introduction 2 7 Patient Video Screen Patterns...
Страница 20: ...Introduction Humphrey FDT User Manual 2660021149532 Rev B 2015 11 2 8...
Страница 38: ...Operation Humphrey FDT User Manual 2660021149532 Rev B 2015 11 3 18 Screening C 20 Test Result Sample...
Страница 39: ...Humphrey FDT User Manual 2660021149532 Rev B 2015 11 Operation 3 19 Threshold C 20 Test Results Sample...
Страница 40: ...Operation Humphrey FDT User Manual 2660021149532 Rev B 2015 11 3 20 Threshold N 30 Test Results Sample...
Страница 50: ...Service Information Humphrey FDT User Manual 2660021149532 Rev B 2015 11 5 2...
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