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8000-INS-UMENG Rev. 4
Transverse Probe Positions
– Transverse scans provide a lateral image of the globe
that traverses several clock hours. The position of the transverse scan is indicated by
the center of the clock hours in the scan as well as the portion of the globe being
examined (P for Posterior Pole, E for Equator, EA for Anterior to the Equator, etc.).
Example of 12:00 EP Scan
The probe is positioned on the sclera, parallel to the limbus, while the patient is
looking toward the area of the eye being examined. The probe marker is held parallel
to the limbus and pointed superiorly during vertical and oblique scans. For horizontal
scans (6:00 and 12:00 positions), the marker is pointed nasally to keep it parallel to the
limbus.
For a 12:00 EP scan, the probe is positioned at 6:00 with the marker parallel to the
limbus and pointed nasally. The probe is pointed toward the Equator Posterior at
12:00.
Use the selection tool to indicate the area of the globe being scanned. Once the desired
position has been selected, use the “Set” button to save the orientation to the current B-
Scan Image or Video.
