Zeiss OPMI Lumera i, Instructions For Use Manual

Page: 17 / 184

Version 8.0
G-30-1720-en
Page 17
OPMI Lumera i Safety measures
Illumination intensity
The majority of researchers suggest that the surgeon should use the lowest
light intensity required at the patient’s eye to guarantee good viewing during
surgery.
Brightness control ZEISS has addressed this aspect by providing its devices with a feature for
continuously varying the brightness of the light source. This permits the
surgeon to optimally adapt the light intensity at the patient’s eye to the
conditions existing in each case.
Angle of illumination
Several publications
1)-4)
suggest tilting the microscope to reduce the exposure
of the macula to direct illumination.
Tilting mechanism The surgical microscope features a tilting mechanism for the main microscope
to enable indirect illumination.
Focus of the light source
Studies show that injuries are likely to occur if the filament of the light source is
imaged on the patient’s retina. The peak intensity of a filament is considerably
higher than that of an even and extended light source such as a light guide.
Fiber optic illumination
For this reason, ZEISS uses fiber optic illumination in its surgical microscope
systems.