Posterior Segment2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User Manual8-20addition, poor signal strength, pigmentation of the Fundus, and peripapilliary atrophy canoccasionally cause misleading sub–RPE illumination findings.To edit sub–RPE illumination:1. Open an edit screen by clicking the Segmentation Tool (shown at left). The screendisplays the sub–RPE illumination segmentation as a colored region on the sub–RPEslab. The current sub–RPE illumination segmentation becomes active for editing. Theedit screen also includes the OCTen face image with slice navigators and theHorizontal B-scan tied to the navigator position.cáÖìêÉ=UJNP=bÇáí=pìÄÓomb=pÉÖãÉåí~íáçå=aá~äçÖ2. Use one of the available edit tools (shown clockwise at left) to modify thesegmentation boundaries:• Pencil: Click and drag to draw with fine detail.• Floodfill: Adds gross detail. To fill in a full lesion, draw the boundary of the lesionwith the pencil tool or the floodfill tool, click the floodfill icon, and thenclick the lesion to fill it in.• Eraser: Removes gross detail. To remove a large area, draw the boundary of thearea with the knife or eraser, click the eraser icon, then click the area toerase.• Knife: Click and drag to delete with fine detail.3. Once you have completed editing, click Apply to complete the operation and return tothe analysis screen with the updated segmentation. On the analysis screen, thesegmentation is shown as an outline around the area that had been filled in on theedit screen.Sliceindicators
