SL 20i
INSTRUCTIONS FOR USE
12
Lock
Projected
Slit
Figure-12 Focus on Slit
Figure-13 Adjust Patient Height
Base
Figure-14 Adjust Height
Figure-15 Adjust Slit Width
Canthus
Mark
8126700-795
SL 20i
Issue 1.0
Printed on June,2019
OPERATION
1. Turn on the power using the On/Off switch located on the front
of the power supply. Brightness can be adjusted by rotating the
illumination level knob. Change the knob for brighten control.
NOTE:
The maximum position is for intermittent use only.
Continuous use will shorten lamp life.
2. Insert the Focusing Rod in the pivot post of the instrument
body to make rough IPD and focus adjustments.
3. Position the light onto the flat surface of the focusing rod and
adjust the pupillary distance and focus of the eyepieces to
suit the needs of the operator. Refer to figure-12.
4. Set Magnichanger knob to 16x. Bring 10mm Aperture into the
light path by rotating aperture disc. Focus image on target rod.
Circular Image should be in the Centre of FOV as Shown in
Figure 12.
5. Using the Slit Width Knobs, adjust the projected slit so that
the thinnest slit is shown on the Focusing Rod. Refer to fig.
-12 & 15.
NOTE:
The thinnest line will allow for greater accuracy.
6. Remove the Focusing Rod.
7. To position a patient, adjust the chin rest height by turning
the Chin rest Elevation Handle on the post of the Chin Rest
Assembly until the patient’s canthus is in line with the canthus
mark on the chin rest post. Refer to figure-13.
8. Microscope elevation is adjusted by rotating the joystick and
observing the slit image through the Microscope Assembly until
slit is centered on the patient’s cornea. Refer to figure-14.
9. Move the slit lamp with the joystick held firmly and slightly
angled toward the patient, until the slit appears sharply on the
cornea.
NOTE:
The accuracy of this rough adjustment should be checked
by the naked eye. The fine adjustment is performed while
observing the slit through the microscope.
10. Tilt the Joystick, which is now held lightly at its upper end,
until the slit appears sharply at the depth of the eye which is to
be observed.
11. The horizontal motion of the base can be locked by tightening
the Base Locking Screw. Refer to figure-14.
Chin rest
Elevation
Handle
Height
Adjust Lamp
Slit
Width/Rotation
Knob
