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3.
If the pupil margin was not detected correctly or if you want to center the
treatment either to the limbus or to the lens apex, proceed as follows:
The following step is mandatory, because the pupil margin defines the
limit for the laser cuts. Be aware that the laser cannot be focussed behind
the iris!
n
To determine the pupil margin, click the ‘Mark pupil’ button (Fig. 152)
and mark three points on the pupil in the video camera image.
The following step is optional. In case the limbus centering is different to
the pupil centering, the capsulotomy center will be shifted towards the
center defined by the limbus marking. In any case the pupil margin
including the minimum safety distance of 500 µm will be respected.
n To determine the limbus margin, click the ‘Mark limbus’ button
(Fig. 152) and mark three points on the limbus in the video camera
image.
Note that centering to the lens apex is only possible once the marking of
the anterior and the posterior lens surfaces have been done as described in
steps 5 to 8!
n
To center to the lens apex, click the ‘Center to lens apex’ button
(Fig. 152) in the video camera image.
Fig. 153: Pupil margin is determined (example)
ð
The green marking circle appears in the video camera image (Fig. 153).
The pupil margin is determined.
TREATMENT
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SKU: 70005780TPV * Version 6 * UM-100010770 GB
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TPV Controlled Document / Status: Effective / Effective Date: Jun 14, 2017 2:38:46 PM
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