PLUSOPTIX S12C Short Manual page 7

b) Patient does not focus on hte camera!
this example, the patient is looking to the left of the camera (when seen from the
patient). The red points in the gaze map highlight this line of vision.
Cause: This error message is shown if the patient is not looking at the hexagon on the
camera face.
Reason: To avoid incorrect refraction measurement values in the periphery of the eyes,
both eyes must be facing the middle of the camera.
Tip: Position the child so that their knees and nose are facing the camera. Do not use
any external fixation aids and stay calm! Both corneal reflexes must be seen in
the centre of the pupil middle on the camera image. Only green points should be
seen in the two gaze maps on the "Measurement values" results page.
c) Pupils too big!
In this example, the pupils are greater than 8.0 mm.
Cause: This error message is shown if one or both pupil diameters are greater than 8.0
mm.
Reason: The pupil reflexes will be overexposed if the pupils are too large. In this case, the
measurement will be interrupted inconclusively. If measurement values are still
shown, these have a greater tolerance.
Tip: Brighten the examination room so that the pupils become smaller.
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