Setup and Testing
HFA3 Instructions for Use
2660021166131 Rev. A 2018-11
4-18
Meridian Mode
While the Meridian test mode is selected, perform the following
steps to present a stimulus to the patient:
1. Select a stimulus type from the stimulus legend or choose a New
stimulus.
2. Touch the screen or depress the mouse on a point anywhere on
the test pattern. The Meridian and Radius values of the point are
displayed above the test pattern.
3. While mouse is left-clicked, or with finger on screen, move finger
or mouse to any location. The Meridian and Radius values update
above the test pattern, and a vector line with an arrow is drawn from
the point to the center. If the radius position is outside the testable
area, the point will automatically be placed at the maximum
position.
4. Lift finger or release the mouse to fix the point.
5. The stimulus immediately begins to move down the line to the
center.
6. The point along the line at which the patient responds is displayed
by an icon.
Point to Point Mode
While the Point to Point test mode is selected, perform the following
steps to present a stimulus to the patient:
1. Select a stimulus type from the stimulus legend or choose a New
stimulus.
2. Touch screen, or click mouse, to place the first point anywhere on
the test pattern. If the radius position is outside the testable area,
the point will automatically be placed at the maximum position.
3. Lift finger or release the mouse to fix the point.
4. Touch the screen, or click mouse, to place the second point
anywhere.
5. A vector line with an arrow is drawn between the two points and
is updated as the finger or mouse moves the position of the second
point.
6. Lift finger or release the mouse to select the second point.
7. The stimulus immediately starts to move between the two points.
8. The point along the line at which the patient responds is displayed
by an icon.
