Stratus OCT User Manual PN 2660021134133 A
Prepare To Scan
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• It is important to situate the target light level with the patient's fellow eye and as far
as possible from the patient.
The Patient Experience
The patient experience with the Stratus OCT is normally brief and comfortable. An
experienced operator can acquire several scans from each eye in the space of 5-7 minutes.
An exam usually requires the patient to look inside the ocular lens of the Patient Module
for 1-3 minutes at a time for each eye, depending on the number of scans desired. The
instrument acquires most scans in about 1 second. The additional time is required to
position the Patient Module before scanning and to optimize scan quality. The patient
need not remain in the head mount throughout an examination, since the operator can
reposition the patient module as needed. Note that the Stratus OCT is never to contact the
patient's eye.
• If you select internal fixation, we recommend that you cover the patient's fellow eye
while scanning. This enables the patient to fixate more steadily.
• During positioning, what the patient sees with the study eye is a rectangular field of
red punctuated with a green target light. Normally, the patient can look at this field
for several minutes at a time without discomfort or tiredness.
• During scan alignment, the patient sees the scan pattern in motion on the red field. It
is traced rapidly at first, while in scan alignment mode, then more slowly in scan
acquisition mode.
• Finally, during scan acquisition, the patient sees a bright greenish-white flash, like a
camera flash. This is the video camera acquiring a red-free fundus image for storage
with the scan image. (The operator has the option of acquiring scans without the
flash, and therefore without a high contrast image.)
• Except for the most photosensitive, the flash should not be uncomfortable, and the
patient may experience numerous such flashes without harm. However, he or she may
find it startling at first, so the patient should be made aware of it in advance. As with
any flash, the patient may see shadow images for a few seconds.
Enter Patient Data
The Stratus OCT integrates the patient database with scanning and analysis. Scanning is
disabled until you select a patient from the database. You cannot change patient
information during the exam. However, you can edit or delete patient records after the
exam. You can add a patient to the database in the M
AIN WINDOW (see Add/Edit Patient
Records, page 2-9).
DICOM Workflow for Modality Worklist
When the CZM DICOM Gateway is properly installed and configured an a Stratus OCT
instrument, you can retrieve a list of patients who are schedule for exams (DICOM Modality
Worklist).
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