Slit Lamp Microscope USER MANUAL
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4. Lock the base. After the microscope is
adjusted, tighten the base locking screw
(see Figure 3.3.2) to fix the base so that it
cannot move.
3.4 Operation of illumination system
1. Change the brightness of the slit image:
Rotate the slit width control knob (see
Figure 2.3.1) to change the slit width from
0mm to 12mm (when the width is
adjusted to 14mm, the slit becomes
circular), the knob has a scale to indicate
roughly the width value (see Figure
3.4.1).
2. Change the aperture diameter and slit
height: Rotate the aperture selection knob
to get 7 different sizes of circular spot and
1 continuous change aperture. The
diameter of the circular spot is 14, 10, 5, 3,
2, 1, 0.2. Continuously changing the
aperture can continuously change the
length of the slit from 1 to 14 mm. The
aperture data is displayed from the pupil
reading window (see Figure 3.4.2).
Figure 3.4.2
3. Rotating slit image: horizontally move
aperture selection knob can rotate the slit
image at any angle between vertical and
horizontal. The angle of rotation can be
displayed by the scale board. Each small
grid is 5, and the larger grid is 10. (See
Figure 3.4.3).
Figure3.4.3
4. Offset illumination. Rotate the centering
knob and rotate the slit width adjustment
knob in the direction of the arrow to offset
the illumination light from the center of
the microscope field of view. This is
mainly used for indirect inverse
illumination methods to check the eyes.
Rotate the centering knob and the slit light
returns to the center of the field of view
(see Figure 3.4.4).
Clockwise to
lower,
counterclock
wise to raise
Aperture and Slit
Height and Display
Window
Aperture and Slit
Height Control Knob
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