Keratron
™
Onda Installation and operating manual
OPTIKON 2000
Cod. 161401EN
7-13
2015-03-27
Rev.C
7.4
CORNEAL TOPOGRAPHY [TOPOGRAPHY]
If the unit has not been previously calibrated (refer to “Calibration” in section §7.2),
pressing [Topography] on the initial screen will cause the following message to
appear:
Figure 7-22: Message that calibration is missing
Otherwise, pressing the button on the
joystick
will cause a topographic acquisition
to be initiated, and the screen will appear as shown in Figure 7-23.
NOTE: To stop it at any time, you simply need to press [Abort] in the upper left-
hand corner.
The screen in Figure 7-23
shows the live image of the patient’s eye (1). In the lower
left-hand corner of the image (2), a position sensor detects and indicates whether
you are acquiring the right or left eye.
Pressing (3) or (4) on the
touchscreen
allows you to select which pair of
photoelectric cells (“Near” or “Far,” refer to section §5.1.2) is to be used in the
EPCS. This choice is made at the beginning of each test (max. 8 images, all at the
same operating distance), otherwise all of the previously acquired images will be
deleted.
Figure 7-23: Topography: Live view
