9
•The vertical position of the
instrument rod on the surface of the
eye is an essential condition for the
accuracy of IOP measurement. Place
the Tonometer rod on the upper
eyelid of the patient 2-3 mm from its
edge (in the sclera region), holding
the tonometer body strictly vercally.
The contact area of the tonometer
rod should fall on the upper por-
on of the sclera corresponding to
corona ciliaris in Meridian 12 (Figure No 14). Recom-
mended installaon points are indicated in the figure.
Attention! Avoid slipping of the eyelid onto the cornea
while taking the measurement!
!
•
•
The heel of the hand holding the Tonometer should rest
against the patient’s forehead. The smoothness and
preciseness of movements required for the measuring
process is achieved by resting the hand against the
patient’s head (forehead), as well as trained through
continuous usage.
Stretch the upper eyelid with a finger of your free hand
in a way to ensure alignment of the upper eyelid edge
with the upper corneal edge. Fixate and hold the eyelid
in this position, without pressing on the eyeball.
• Holding the Tonometer vertically
down, smoothly lower it down
by 2-3 mm. At this point, dynamic
force is actuated, which is
perceived as light vibration.
During the measuring process,
make sure that the buffer ring does not touch the
eyelid, but remains 2-3 mm above the eyelid surface.
Avoid slipping of the eyelid onto
the cornea while taking the
measurement.
Attention! When the Tonometer is
lowered too far down, it produces a
continuous single-tone beep, which
stops automatically when the device
is raised high enough for measuring.
!
•1 or 2 seconds after lowering the Tonometer down, it
produces a beep indicating that the measurement is
completed, and the measured IOP value is displayed in
its window. The measuring process will continue until
the device is lifted away.
To end the process, lift the device up. At the moment
when the measurement is taken, the device produces
another beep, and the measured IOP value is displayed
in the window.
Figure 13
Figure 14
Figure 15
