© Heidelberg Engineering 2007. Art. No. 19964 Please see the Spectralis Operating Manuals for full instruction. 2
Image Acquisition I
General Workflow - Overview
1. Prepare the device (headrest and camera).
o Make sure camera head is pulled all the way back.
o Clean camera chinrest and forehead rest.
o Check that lens is clean.
o Adjust table height and chinrest for the patient.
2. Prepare the patient.
3. Start the software and Acquisition Window.
o Create or open the patient file, start a new acquisition.
o Pre-set the default Acquisition Parameters.
o Select an Acquisition mode using the filter lever and
the control panel.
4. Choose a fixation target (internal or external, via control panel).
5. Ask patient to put head on headrest.
6. Make sure canthus mark is at eye / canthus level.
7. Bring camera forward, align the camera for optimum image quality.
8. Activate desired image modes using the control panel.
9. Acquire images.
10. Move camera backwards and then over to fellow eye to acquire
images for fellow eye.
11. Save images.
12. Review images for content and quality, select inferior/redundant
images to be deleted.
Preparations
Pull the camera in the most backward position, ensure head support and
camera objective are clean. Adjust the height of table and chair for each
patient. Pupil dilation is recommended to increase the image quality. It is
recommended to perform the Spectralis scan before other diagnostic
measures are taken that irritate or dry the cornea.
Explain the procedure and the fixation targets to the patient. Adjust the
focal plane to the refraction (spherical equivalent) of the examined eye
using the focus knob at the back of the camera. For the examination of
highly myopic patients, an internal myopic lens is available for scanning
laser imaging. Start the software (see page 4).
After creating a patient file or opening a new examination session for an
existing patient file, the Acquisition Window will open.
It is recommended to pre-set the default Acquisition
Parameters. In the Acquisition Window, open the menu
Setup and choose the option Acquisition Parameters.
The window shown on the right will open.
Set the resolution / speed parameters. The Cyclic
Buffer Size is important for movie acquisition available
for all scanning laser imaging modes. After the “Series“
button on the control panel has been pressed to start the
acquisition, the system will additionally save the last
images before the button was pressed. The Automatic
Brightness Control is recommended. It automatically
increases/decreases detector sensitivity so that the
image is not too dark or overexposed. This feature can
also be enabled/disabled from the control panel (menu
“More”).
For Angiography, it is recommended to enable the
Show Timer Window option to display the duration
since the last injection.
Use the central internal fixation target if
needed. Ask the patient to place his/her
chin on the chinrest and to place the
forehead against the headrest. Adjust the
chinrest height so that the patient’s eyes
are at the same level as the red canthus
marks on the headrest posts.
Start the laser by pressing the button at
the bottom right corner of the control panel
screen. The main menu will open. The
following default settings are typically used
(see image on the right):
• Infrared reflection mode (IR button on
the control panel, see image), turn
the filter lever to “R” for the reflection
mode.
• Scan angle of 30 degrees.
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