Heidelberg Engineering SPECTRALIS SPIRIT Administrator Guide

1
Exchanging Lenses: Fitting the Anterior Segment Module (ASM)
Acquisition: Preparation
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How-to Guide
Turn the 30° SPECTRALIS standard
lens about 50° counterclockwise
and remove it.
Position the external fixation
target approximately level with the
“Heidelberg Engineering” logo on
the camera head and in front of the
eye which is opposite to the eye you
are scanning.
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Position the camera to center the bright spot and move the camera head slowly
towards the patient’s eye so that the infrared image is evenly illuminated.
Once the Anterior Segment Module has been fitted, the
focus setting “D” (diopters) changes to “mm” (millimetres).
Turn the focus knob until the “Focus” value is approximately
“0.00 mm”.
Do not turn the focus knob again after the initial adjustment
to 0.00 mm. This may lead to a decline of the image quality.
The infrared image will be overexposed for a few seconds until the
automatic brightness adjusts to the correct illumination.
Turn the focus knob to approximately +21 diopters and pull the camera back-
wards. Insert the ASM by aligning the red dots of the camera head and the
ASM. Turn the ASM about 50° clockwise until it catches.

2
Acquisition: Cornea
Acquisition: Anterior Chamber Angles (ACA)
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If the OCT image quality is good but the IR
image is out of focus, click andchangethe
anterior chamber depth.
Move the camera slowly towards the patient’s eye until
the cornea OCT image is displayed in the Sweet Spot.
Press the joystick button for 2 seconds to activate the
eyetracking. Wait for ART mean of 60.
When the quality of the image looks good, shortly press
the joystick button.
Move the camera slowly towards the patient’s eye until both anterior chamber
angles are displayed in the Sweet Spot.
Center the blue scan line on the centre of the pupil and make sure it extends from
the nasal to the temporal limbus.
Press the joystick button for 2 seconds to activate the eyetracking.
When the quality of the image looks good, do a short press of the joystick button.
If the camera is too far
away from the patient’s
eye, the IR image will be
out of focus and the OCT
image will be inverted.
If the OCT scan is pivot-
ed, subtly move the pa-
tient’s fixation horizon-
tally using the fixation
target until the image
is level.
If the apex
reflex is visible in
the OCT image,
click on the IR
image to place
the OCT scan
just below the
reflex.
If the camera
is too far
away from the
patient’s eye,
the IR image
will be out of
focus and the OCT image would not be in the Sweet Spot.
How-to Guide