home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Contact Lens Series
/
Contact Lens Series Volume 1.iso
/
mac
/
Contact Lens Series V1(MAC)
/
Keratom.DIr
/
00168_Field_168.txt
< prev
next >
Wrap
Text File
|
1997-10-29
|
520b
|
19 lines
KERATOMETER MEASURING TECHNIQUE
Focusing the Mires
The headrest can be moved
forward or backward with the
small knob just below the
patientΓÇÖs chin. Turn the knob
clockwise to move the patientΓÇÖs
head back (when the focus
control was all the way back
towards the examiner and the
mires still not in focus) and
counter-clockwise to bring the
forehead forward towards the
instrument (when the focus
control was all the way forward
and the mires were still not in focus).