Keratron™ Installation and operating manual
OPTIKON 2000
Cod. 161501EN
7-10
2014-04-23
Rev.0
NOTE: To stop it, you simply need to press [Abort] in the upper left-hand corner.
The screen in Figure 7-
16 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 sect ion §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 7-16: Topography: Live view
In (5) and (6), together with an audible signal, is shown the relative position between
photoelectric cells and corneal apex. The lower LED, wi
th an arrow pointing up (▲),
indicates moving closer to the eye, while the upper LEDs, with arrows pointing down
(▼), indicates moving away from the eye; if the arrow changes direction and points
up, this means that the exact focus point has been passed. When the
OK
indication
lights up, this means that you have reached the correct focus.. These indications are
accompanied by distinctive audible signals that allow you to concentrate better on
the positioning of the eye rather than on the LED indicators.
Pressing the
joystick
in the
OK
position will cause the software to proceed to acquire
the image and the stop image will appear on the screen.
In (7) we have the test for the break-up time (TBUT) that enables us to assess after
how much time the patient has the lacrimal film broken. Activating this function, after
making the patient blink an initial image of the eye must be acquired in
OK
position.
Then 16 distance images of 1 second are automatically taken and transmitted to the
PC. During this sequence, the patient must keep his eye fully open and the operator
must keep the image as centred and as near to the
OK
position as possible.
For the results analysis and the filing of the TBUT test, see the Scout software's
Help.
