䕔
3-30
3.3.6 Precautions for measurement
a) Handling the biometry probe in contact/immersion modes
[Contact mode]
Directly apply the contact section of the biometry probe
perpendicularly to the center of the corneal.
[Immersion mode]
The biometry probe can be used while its tip is immersed in
ultrasound media (water, corneal protective agent, etc.).
䕔 When the immersion attachment is not used
1) Apply the biometry probe perpendicularly to the corneal center
where ultrasound media is applied.
2) Apply an ultrasound media such as corneal protective agent
between the contact section of the biometry probe and corneal so
that the gap between the corneal and contact section of the probe is
always approximately 2.0 – 5.0 mm.
䕔 When the immersion attachment is used
䕔
When putting the ultrasound media in the cup at
the tip of the immersion attachment, pay
extreme attention not to allow air to enter the
cup. If air is in the cup, measurement cannot be
performed or correct measurement cannot be
obtained.
䕔
When using the immersion attachment, be very
careful not to allow the tip to contact the corneal.
The corneal may be damaged or the axial length
is measured shorter due to pressure.
Approximately 2.0 - 5.0 mm
2)
Biometry probe
Corneal
1)