1.3 Positioning the patient
The patient must be positioned in such a way that the distance from the device to the eye is 80 mm.
A steady head position and the correct device-to -patient distance is promoted by resting the patient’s head
well against the chin rest and forehead band.
A correct alignment with the patient’s pupils can be visually checked by the operator referring to the two
lines on the forehead supports.
Figure 1
It is necessary to tell the patient to look steadily at the fixation point in the center of the Placido disk.
The position of the device in relation to the patient’s eye thus found is a starting point for fine measurement
adjustments.
The patient does not use the controls.
The patient may be an elderly person, an invalid, or a child. In any case the device is to be controlled by the
aforementioned specialized personnel.
1.4 Places of use
The intended places of use are: health care centers, doctors' surgeries, operating theatres.
1.5 Contraindications
Patient could have a dazzle effect, after the exam, dues to the device lights, but it disappears in few minutes.
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