ALIGNING AND FOCUSING THE RING PATTERN

Aligning:

You will now see a live picture 
of the rings reflected from the 
patient’s cornea (or their lids 
or skin if align is off).  First 
align the instrument by using 
the left and right arrow keys 
on the keyboard to move the 
unit right and left.  Use the 
PgUp and PgDn keys to move 
the unit up and down.  Center 
the cross hair in the center ring.

Focusing:

You also have to focus the instrument by using the up and down arrow keys.  Get the rings in sharp focus.