Overview2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User Manual9-22ONH Overlay and Angio Metrix BarFundus Image: Overlays both the AngioPlex image and the Structure image with theFundus Image.Remove Projections: Filters out any projections. Projection artifacts can potentially givefalse information about blood vessels.Slice Navigators: Overlays the blue (fast B-scans) and magenta (slow B-scans) on theimages. Turn them off by deselecting the option.B-Scan Flow: Enables the use of either one or two colors in the B-Scan when viewing itsflow. A single color shows all aspects of the flow in red. Two colors overlays the scan so thered will overlay the data lying above the RPE and green will overlay data lying belowthe RPE.Segmentation Lines: Adds the dashed magenta lines to the segment viewport.Map: Displays the density of perfusion.Trace: Indicates where flow is detected.Transparency: Active when you are using a prior scan. This option provides visual control ofprior scans. Transparency is relative to the Map and Trace overlays.Show Grid: Shows/hides the circle with the quadrants from the view. The values showndisplay the P and F numbers.Selected ScanThe Selected Scan is the scan you had selected from the scan list, prior to selectingAngiography Change Analysis. The date of the exam is shown above the scan images.AngioPlex Metrix in Change AnalysisThe AngioPlex Metrix features described in "ONH Overlay and Angio Metrix Bar"on page 9-22 are available from the Angiography Change Analysis screen for OCTAngiography and for Montage individual scan images when the Superficial Preset isselected. You can not edit the FAZ outline in the Change Analysis.In the Angiography Change Analysis, the ETDRS and FAZ tables are expanded to includethe densities of the previous scan, the current scan, and the difference between the two.This option is available for ONH Angiography, and provides the ability to quantify RNFLmicrovasculature around the ONH. However, you must select toggle icon in the upper-rightarea of the ONH Angiography Change Analysis screen to display it.
