ALCON HAND HELD AUTO-KERATOMETER

How it works

Patient's View:

From the patient side of the 
instrument you will see a ring 
of green lights, a central 
viewport, and four projectors.

The outer ring of green lights 
are reflected off the cornea so 
the operator can visually 
inspect the cornea and detect 
distortion or large amounts of 
astigmatism.  They are not used 
in the actual measurement.