Zeiss Humphrey II-i series, Руководство пользователя

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Humphrey Field Analyzer II-
i
series User Manual 2660021145640 A
Kinetic Testing 13-7
Note: You must select SPECIAL MAPPING 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. Refer to
“Special Mapping,” on page 13-27 , for details.
Meridian Pattern
This feature lets you select the meridian pattern used to map a patient’s blind spot or scotoma. The
buttons indicate directions along which each stimulus will move. You 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 box sets 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). You can
choose from 5, 10*, and 15 degree settings.
Changing the Visual Field Size
Kinetic tests can start either 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. You can use trial lenses only when testing the central visual
field.
1
From the Kinetic Test screen, press ZOOM TO 30. The visual field to
be tested is now thirty degrees (30°) in size.
The ZOOM TO 30 button will be replaced with the EXPAND TO 80 but-
ton. Press this button again, when you wish to return to the original
field size.