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PREPARATIONS BEFORE USE
ADJUSTING THE LIGHT INTENSITY: OFFISS, OFFISS Lite
The light intensity can be adjusted by the 1st arm operation panel or the foot switch.
Illumination light intensity display:
The illumination light intensity display is based on ISO10936-2 to reduce or prevent retinal injury
caused by the operation microscope's illuminator. (When the radiance (LB value) weighted in
the wavelength 380~700nm is 500mW/(cm2•sr), it is displayed as 1.0.)
The use time is determined on the assumption that the limit value of radiation against the retina in
the aphakic eye is 10J/cm2.
Reference data:
International Commission on Non-lonizinng Radiation Protection, Guidelines on limits of exposure
to broadband incoherent optical radiation (0, 38 to 3µm). Health Phys. 73 (3): 539-554; 1997.
ADJUSTING THE LIGHT INTENSITY: Pro, Pro Lite, Standard
The light intensity can be adjusted by the 1st arm operation panel or the foot switch.
Illumination light intensity display:
The illumination light intensity display is based on ISO10936-2 to reduce or prevent retinal injury
caused by the operation microscope's illuminator. (When the radiance (LB value) weighted in the
wavelength 380~700nm is 500mW/(cm2•sr), it is displayed as 1.0.)
WARNING
If you need to use the coaxial illumination during an ophthalmic
operation, make sure you use the minimum illumination sufficient for the
operation. Exposing the patient’s retina to excessive light may lead to
retinal trouble.
WARNING
To reduce or prevent retinal trouble, use the front lens within 40 minutes
(illumination light intensity display: 0.7)/within 70 minutes (illumination
light intensity display: 0.4). Using the front lens for a long time may lead
to retinal trouble.
WARNING
If you need to use the coaxial illumination during an ophthalmic
operation, make sure you use the minimum illumination sufficient for the
operation. Exposing the patient's retina to excessive light may lead to
retinal trouble.
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