OCULUS BIOM 4 Instruction Manual page 21

For BIOM 4c only (focusing done by electric motor):
Only use the BIOM 4c's motorized focusing function when the front lens is far

enough away from the patient's eye.
The surgeon may only use the motorized focusing function when the distance be-

tween the ophthalmoscopy front lens and the eye is simultaneously monitored.
It must be ensured that the operator can stop the motorized focusing function at

any time.
Attention
After the BIOM 4 has been swung in into the working position, the following must not be
performed during the proper use:

to use the rough adjustment mechanism of the microscope support under any
circumstances (since the mechanism is not designed for precisely controlled
movement).

to change the height position of the microscope support by mechanical or
motorized means whilst above the operating area.

to change the patient´s position by raising/lowering the OP-table.
Visualization of the posterior eye segment
After all preparations for surgery in the posterior segment have been completed proceed
as follows, without changing the microscope position!

Use a suitable endoillumination.

Swing the BIOM 4 into the beam path of the microscope. Lift up safety insertion and
only release it again when the swung-in end position has been reached.

The lens slides down to its designated position. This position has been reached when
the control marks are fully visible.

Turn off the microscope illumination.

Activate the SDI to right the complete image reversal.

For BIOM 4c and SDI 4c only:
 If the BIOM 4c is swung out of the beam path the inverter function is not activated.
While swinging the BIOM 4c into working position the SDI 4c is activated

automatically.
The position switch on board of the BIOM 4c thus operates the re-inverting function.

 If another status of the inverter is desired, the SDI 4c can be optionally operated via
a combi foot switch.

At a low microscope magnification: Begin initial focusing of the BIOM 4-image by
turning the BIOM 4 focus adjusting wheel.

Magnify the image section by actuating the focus foot switch at the microscope.
Instruction manual BIOM 4 (G/54400/1011/en)
7 Use of the BIOM 4
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