Kowa VX-20, Instruction Manual, Page: 30 / 88

14
3 Basic usage
5
Select a fixation target.
Press the “fixation target selection button” on the LCD monitor to select a fixation target and the position
of the patient's eye fixation.
6
Compensate the diopter.
As needed, press the “diopter compensation buttons” on the right side
panel and use the diopter compensation lens.
The diopter range of each button is shown below.
+ : +10 to +35D
0 : ─ 12 to +13D
─ : ─ 32 to ─ 10D
7
Pull the main unit towards you as far as it goes, and move the optical
head base horizontally and/or the optical component vertically so that
the patient's eye is displayed in the center of the LCD monitor.
8
Adjust the working length.
Slowly move the optical head base forward until the working dot is shown on the retinal image. (Coarse
motion)
Adjust the position of the main unit so that the working dot shown on the retinal image becomes the
brightest on the working dot aid. (Fine motion)
EXIT
ID: 123
12.5W
Central
45
ࠋ
L
NON-MYD VIEWER
FIXATION USER1
USER2
USER3
EXIT
ID: 123
12.5W
Central
45
ࠋ
L
NON-MYD VIEWER
FIXATION USER1
USER2
USER3
Notice
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Maintain a sufficient distance to avoid hitting the patient while moving the instrument in a coarse mo-
tion.