Technical data

G-30-1682-en OPMI® Lumera® T Issue 4.0
Printed on 02. 02. 2009
Safety 25
When using a wide-angle observation system (e.g. BIOM 3)
When using a wide-angle observation system (e.g. BIOM 3 from Oculus)
which is usually installed between the surgical microscope and the pa-
tient, make sure that the patient is neither put at risk nor injured by the mo-
torized focusing system or the movement of the suspension system arm.
Only use accessories expressly certified by the manufacturer for combi-
nation with the surgical microscopes described in this manual.
Warning!
• With the wide-angle observation system swung out of position, always
position the microscope body in such a way that index dot (1) of the
microscope's focus is in the middle of triangle (2) of the marking.
• Select a medium magnification (e.g. 1.0).
• Lower the surgical microscope toward the surgical field until you see
the patient's cornea sharply defined.
• Turn the setting screw for limiting the downward movement clockwise
as far as it will go and check without the patient that the suspension
arm cannot be lowered any further.
It is vital that you read the user manual for the wide-angle observation
system used (e.g. BIOM 3 from Oculus).
Phototoxic retinal injury in eye surgery
General
Several papers
1)-5)
dealing with the problem of phototoxicity in ophthalmic
surgery have been published. A comprehensive review of these publica-
tions reveals five aspects of particular concern:
– Illumination characteristics (spectral composition)
– Illumination intensity
– Angle of illumination
– Focus of the light source
– Exposure time to light
1
2
Risk of collision!