Keratron™
Installation and operating manual
OPTIKON 2000
Cod. 161501EN
5-4
2014-04-23
Rev.0
The operator thus can only take images, by pressing the pushbutton on the
joystick
only when the patient eye is at a preset distance, which is the same distance at
which the instrument was formerly calibrated on a sphere having a known curvature
radius.
After the image has been acquired, specific algorithms reconstruct the shape of the
cornea by analyzing more than 7000 points located on the intersection between the
28 mires edges from black to white and from white to black and the 256 radials or
“meridians".
The curvature values are represented on the screen in the form of chromatic maps.
The centre of the rings represents the
corneal apex
, i.e. the point of the cornea
nearest to the video camera, as well as being an important reference point for all the
corneal maps. The
entrance pupil
is also detected in
photopic
conditions by the
removal of the clear rings in the image, and in
scotopic
conditions activating and
acquiring one or several images with the pupillometry in infra-red
.
5.1.3 MAIN CHARACTERISTICS
The Keratron
™
videokeratoscope comprises of a central unit built around an
embedded PC
. The commands are forwarded via a
touch-screen
integr
ated in a 7”
LCD display. The user interface is intuitive and the most immediately executed
commands, apart from via the touch-screen can be issued with the button on the
joystick.
For the processing and display and for the printing or filing of the examinations
communication will be made with a generic external PC (not included), on which the
Keratron "Scout" software is installed, via an Ethernet cable or via a wireless Wi-Fi
connection.
