Tomey UD-600, Operator'S Manual, Page: 133 / 262

3-105
<Immersion mode>
For auto measurement in the immersion mode, the following
conditions are added to those for
A
to
C
provided for the con-
tact mode.
D The corneal waveform shall be within the range of 2.2 to
5.0mm (which is shown with the broken lines in the fig-
ure).
The following items are not the conditions for taking measure-
ment data, but used for checking if acquired waveforms are
ideal or not.
Give this check together with the use of i) to iii) of the contact
mode.
v) No unnecessary waveform shall be between the initial wave-
form and the corneal waveform.
Air void, if included in the protective media filled in the
cup provided at the end of the immersion attachment or
applied between the biometry probe and the cornea, causes
to produce unnecessary waveforms.
Immersion echo
Lens front echo
Corneal echo
Retinal echo
Lens rear echo
3.6 Biometry