Zeiss opmi lumera 700, Instructions For Use Manual

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Instructions for Use 2 Safety notes
OPMI LUMERA 700 2.8 Maximum radiation exposure
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u
Adjust the surrounding field illumination to be somewhat
darker than the central red reflex spot. This simultaneously
reduces glare from the patient's sclera.
u
Use the lowest brightness setting possible.
u
Use the retina protection filter (blue barrier filter) to reduce the
blue portions of the light. The retina protection filter increases
the recommended duration of the radiation exposure.
u
When working on the exterior eye: use the retina protection
device. This will prevent light from entering the pupil.
u
Turn off the microscope illumination system or cover the
patient’s eye during pauses in surgery.
2.8 Maximum radiation exposure
The following tables are intended to serve as guidelines for deter-
mining potential hazards.
Bases for calculation
The calculations are based on the daily exposure [
}
29] limits
recommended for occupational safety
6)
. A safety factor of 10 has
been used in determining these limits.
The data has been calculated for the worst case scenario:
• Direct exposure
• Uninterrupted exposure (no surgical instruments in the eye)
• Aphakic eye
• Immobile eye (exposure in one area only)
• Pupil dilated to 8 mm
2.8.1 Maximum radiation exposure times with red reflex
illumination
Brightness
level [%] Maximum exposure times per light source [min]
Halogen Xenon LED Xenon
with
HaMode
filter LED with
HaMode
filter
25 47.0 7.6 19.7 26.6 69.7
50 21.3 3.7 9.9 12.9 34.8
75 12.9 2.8 6.6 9.8 23.2
100 9.2 2.0 5.0 2.0 17.4
The use of the retina protection filter increases the recommended
exposure time by a factor of 5. Any deviation from these values is
only permissible when medically justified.