Zeiss HUMPHREY 720i, User Manual

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REV. B 02/03 PN 51680-1 HUMPHREY FIELD ANALYZER
II -
i series
KINETIC TESTING
Stimulus Color
This drop-down menu allows the user to choose between the following stimulus colors: white*,
red, and blue.
Note: SPECIAL MAPPING must be selected to use the Meridian Pattern and Radius Distance
options below. These two features are used only for Scotoma Mapping and the Blind Spot Map.
They are ghosted during standard kinetic testing. See “Special Mapping” below for details.
Meridian Pattern
This feature lets the user select the meridian pattern used to map a patient’s blind spot or
scotoma. The buttons indicate directions along which each stimulus will move. The operator
can choose from a 4, 6, or 8 meridian pattern. Each meridian of the 4 meridian pattern is
separated by 90˚, the 6 meridian pattern by 60˚, and the 8 meridian pattern by 45˚. Each
meridian of a chosen pattern will be tested in random order.
The chosen meridian pattern is indicated by the highlighted number in the center of the
button. The example in the left-hand margin shows that the 8 meridian pattern is chosen.
Radius Distance
This drop-down menu is used to set the distance (in degrees) from the starting point to where
Scotoma Mapping or Blind Spot Map will end (if the patient does not indicate seeing the
stimulus). The user may choose from 5, 10*, and 15 degree settings.
Kinetic tests can either start at the edge of an eighty degree (80˚) or a thirty degree (30˚) field
size. The default size is the 80˚ format. If you want to test only the central visual field, the
stimulus can start from a point 30˚ from fixation. Trial lenses may only be used when testing
the central visual field.
1
From the Kinetic Test
screen, press ZOOM TO 30.
The visual field is now thirty
degrees (30˚) in size.
The ZOOM TO 30 button will be
replaced with the EXPAND TO 80
button. Press this button again to
return to the original field size.
Changing the visual field size
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