Zeiss IOLMaster, User Manual

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000000Ć1150Ć839 IOLMaster 11.02.2004
Axial length measurement [ ALM ]
Ÿ Activate the ALM mode using the
Ć ALM button or the
Ć < A > key or the
Ć (pushbutton on the joystick).
Note:
With the ALM button and the < A > key you can start axial length
measurements from all modes. The pushbutton on the joystick
will work only in Overview mode.
To measure aphakic or pseudophakic eyes or eyes filled with silicone,
select the corresponding mode from the ALSettings menu. This special
AL mode is being displayed in the video image field and will be active
until you reset it via the menu. The instrument will also be reset to the
"phakic" mode by changing the side (other eye) or by measuring a new
patient.
Note:
In the measurement of pseudophakic eyes and with specific
intraocular lenses, two peaks may appear. The first higher peak
is a side maximum of the IOL, while the second peak is produced
by the retina. In this case, manual correction is necessary (see
evaluation of ALM results).
On activation of ALM mode, the instrument automatically changes the
magnification: a smaller section of the eye becomes visible with the
reflection of the alignment light ( 2 , Fig. 16) and a vertical line ( 1 , Fig. 16).
Fig. 16 Video image of the eye with correctly aligned instrument
1
2
3
Ÿ Ask the patient to look at the red fixation light. On the display, a
crosshair ( 3 , Fig. 16) with a circle in the middle appears.
Ÿ FineĆalign the instrument so that the reflection of the alignment light
appears within the circle.
Key Button
A;
joystick pushĆ
button
Fig. 15 ALSettings
Operation