KERATOMETER MEASURING TECHNIQUE

Placing Patient in Instrument

Prior to putting the patient in the headrest 
of the instrument the chin and head rests 
should be wiped with an alcohol swab or a 
tissue placed on the chin rest.

The patient should be seated comfortably 
and the instrument adjusted to the height 
of the patient.  The patient is asked to rest 
their chin in the chin rest and to bring their 
forehead tight against the headrest.  A 
common mistake is for the patient to be 
too low (instrument too high) and for the 
patient's forehead to be away from the 
headrest.

The patient should be asked to grasp the 
instrument just in front of the chinrest so 
that they will stay as still as possible 
during the measurement.