ALCON HAND HELD AUTO-KERATOMETER

Measuring Technique


If you are misaligned you will see four
green lights off to the side (figure 1).  


If you have the instrument too close to 
the patient you will see only 4 green 
lights which will be near the center 
(figure 2)


If you are too far from the patient you 
will see only 4 green lights which will be 
in the periphery (figure 3).