10
3.2 Patient position and fixation target-----------------------------------------
1) Positioning the patient’s head
Have the patient place his chin on
the chin-rest (17) and the forehead
against the forehead-rest belt (24).
Adjust
the
chin-rest
elevation
adjustment knob (12) below the
chin-rest until the patient’s canthus
aligns with the horizontal mark (23)
(Fig.21).
Fig.21
2) Use of the fixation target
For fixing the patient’s eyesight, just
make him look at the fixation target
(30) with the eye not to be examined.
To change fixing position, move the
lamp bar, as well as move the curved
lever around the forehead.
The fixation target with diopter
compensation supplies a dot and
concentric circles target. Slide the
knob
to
adjust
the
diopter
compensation within the range from
-15D to +10D (Fig.22).
Fig.22
The fixation target with spot light is
especially for the patient whose
diopter exceeds -15D (Fig.23).
When changing, just loosen the
fixation screw, replace the fixation
target with the spot light source and
refasten the fixation screw.
Fig.23
3.3 Base operation ------------------------------------------------------------------
1)
Horizontal rough adjustment
Keep the joystick (1) erect and move
the base (4) to make the microscope
move on the horizontal surface to
aim at the object roughly. (Fig.24).
2) Vertical adjustment
Rotate the joystick to adjust the
microscope’s height until it aligns
with the target. Turn the joystick
clockwise to raise the microscope
and counter clockwise to lower it.
3)
Horizontal Fine adjustment
Tilt the joystick to make the
microscope move slightly on the
horizontal surface. While watching
