PLUSOPTIX A12C User Manual page 58

In this example the patient has tilted her head slightly down and is looking up into the
camera. The pupils are partially covered by the upper eyelids.
In this example the right pupil is covered by the upper eyelashes and the left pupil by
Cause: This error message is displayed if a measurement has started but could not be
completed.
Reason: Once a measurement has started it must be completed within 0.5 seconds (this
corresponds to 360 camera images).
Tip: Immediately restart the measurement by pressing the shutter twice.
Position the child so that her knee and her nose are in line with the camera. Ask
the child to lift her head, or hold the camera lower.
hair.
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