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English
Using the Vantage
Filter Selection Control (I)
By rotating the knob (I), different filters may be selected.
Note: For use in surgery, steriliseable levers may be screwed
into the ports located on both the Filter and Aperture Selec-
tion Control Knobs.
1
) Silver Circle
Clear light -
Select the clear light with no filter when inspecting a specific
pathology and a brighter, whiter light is desired.
2) Safety Filter
Use this filter for all routine examinations, as it reduces infrared, ultra-violet
and blue hazard wavelengths without compromising tissue colour. This
setting is also more comfortable for the patient, as the light is slightly
yellow rather than white.
3) Green Circle
Red Free Filter -
This filter reduces red light, so blood will appear black,
silhouetted against a dark background.
4) Blue Circle
Cobalt Blue Filter -
For fluorescein angioscopy.
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