Page 53/68
In this example the patient is too far away; besides the eyes, half the patient’s face can
be seen in the camera image.
In this example the patient is too close to the camera; both eyes are close to the left and
right edges of the camera image.
a) Picture out of focus
Cause:
This error message is displayed if the patient is too close to the camera or too far
from it.
Reason:
The camera is focused at a fixed measurement distance of 1 meter (3.3 feet) and
measures from a distance of between 95 cm (3.1 feet) and 105 cm (3.5 feet).
Tip:
You can determine the correct measurement distance on the basis of the camera
image, which should appear in clear focus on the screen and every single hair of
the eyebrows and eyelashes should be visible.