FOCUSING THE EYE PIECES

Be sure the eye pieces are in focus for you.  

If both eye pieces can be focused, 
set them at 0 and then with a narrow 
slit on either the focusing rod or on 
the patient's closed lid, be sure that 
both eye pieces are in simultaneous 
focus.  If not adjust to bring the slit 
in focus.

If only one eye piece can be focused, 
using only the eye with the eyepiece 
that can not be focused, be sure the 
slit is in focus on the focusing rod 
(#1) or the patient's closed lid.  Then 
looking through the other eye piece, 
adjust it to bring the slit in focus.

If you are not familiar with the instrument it is suggested that you go through the segment on the Instrument Controls and Maintenance before continuing with this module.