12
5. Setting up and using the Spectra Iris
Filter selection control (D)
By sliding the lever (D) in direction of the arrows, different filters
may be selected.
Clear – Select the clear with no filter when inspecting a
specific pathology and a brighter, whiter light is desired.
Green – Red-free filter reduces the red light, so blood will
appear black, silhouetted against a dark background.
Blue – Cobalt blue for fluorescein angioscopy.
Mirror angle control (E)
The light is positioned vertically into the field of view
by rotation of the levers (E) located either side of the
binocular block.
Aperture lever (C)
By sliding the lever (C) in direction of the arrows, the size of
the aperture can be adjusted. Slide to the right to increase
aperture size, to the left to decrease. Refer to the white
dots located on the top of the lever, as per image right.
D
E
C
