General Acquire Procedure; To Begin Scan Acquisition - Zeiss CIRRUS HD-OCT 500 User Manual

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General Acquire Procedure

To Begin Scan Acquisition:

2660021169012 Rev. A 2017-12
General Acquire Procedure
• Enhance Live Scan
posterior segment live scans. Associated up and down arrow buttons enable you to
adjust each manually.
NOTE: HD Angle scans are not aligned to the corneal vertex.
NOTE: If a button or menu option does not appear on the Acquisition screen for your
current scan selection then that function is not available for the current scan.
This section contains information about acquiring scans supported in CIRRUS HD-OCT.
NOTE: Review both the "Acquire Screen and Controls" on page 6-19
for Maximum Image Quality" on page 6-31
Once you have selected the patient of interest, the Acquire button at the bottom of the
Patient screen becomes selectable.
NOTE: The first scan selection and scan of the day will run slightly slower than all later
scans.
NOTE: To minimize errors and artifacts, acquire OCTA Cube scans with FastTrac on.
• HD Line 100x: A single high definition OCT B-scan, using 1024 A-scans, with
selectable B-scan averaging 100 frames with an adjustable length from 3 mm to
9 mm and an adjustable angle from 0 to 90 degrees.
1. Ensure that the Patient is fully prepared for the scan as described in
Practices" on page 5-1.
2. Select Acquire. The screen will change to indicate the scan types available.
3. Select the scan type of interest
4. Ask the patient to hold their gaze and head steady (as the chinrest will be moving)
and select Auto Focus in the Fundus Viewport.
5. Left–click the pupil center of the live image in the Iris Viewport to center the scan
beam through the pupil.
6. After Auto Focus, check the Iris Viewport to ensure that the pupil is still centered. If
the Fundus Viewport turns dark following Auto Focus, center the pupil, click
then click the Auto B/C button. If additional brightness and contrast changes are
necessary, use the appropriate slider controls.
7. Further adjust the chinrest manually, if necessary, by use the circular X-Y control (see
"Iris Viewport (Posterior Segment Scan) and Anterior Segment Scan
Patterns" on page 6-29). Use Z controls (left–right arrows or mouse scroll wheel)
to reach the proper working distance by bringing the iris image into focus.
8. Use Enhance (polarization) and Center (Z-offset) (posterior segment scans only)
buttons and sliders to the left help you improve the scan image quality and center it
vertically.
allows you to adjust the polarization (X,Y–offsets) of
sections prior to acquiring scans.
CIRRUS HD-OCT User Manual
and "Set Up
"Patient Good
,