Technical data

62 Description
G-30-1682-en OPMI® Lumera® T Issue 4.0
Printed on 02. 02. 2009
Illumination settings
The type of illumination required can be selected using knob (1) on the
surgical microscope.
Warning!
– Avoid looking directly into the light source, e.g. into the microscope ob-
jective lens or light guide!
– Adjust the illumination of patient's eye through the surgical micro-
scope to a level which ensures that the fundus is exposed to as little
light as possible.
– If no red reflex is required, swing the retinal protection device into the
beam path.
– When operating on the eye, use the blue barrier filter (retina protection
filter). It protects the patient's retina against unnecessary (blue) radia-
tion and permits the radiation exposure time to be increased by
factor 3.
Type of illumination
Red reflex illumination
This is the best setting to generate an optimum red reflex.
Glare from the sclera is effectively reduced as only the cen-
tral field of view is illuminated.
Red reflex with surrounding field illumination
This setting permits clear visualization of the red reflex com-
bined with illumination of the surrounding field of view.
Surrounding field illumination
This setting is used for illuminating the field of view if no red
reflex is required.
Surrounding field illumination with retina protection device
In this setting, a retina protection device is swung into the
surrounding field illumination beam path. It prevents light
from entering into the pupil and provides additional protec-
tion for the patient's eye against phototoxic injury.