CIRRUS HD-OCT User Manual2660021169012 Rev. A 2017-12Tracking and Repeat Scans6-37cáÖìêÉ=SJOP==_JëÅ~å=qçç=eáÖÜ=çå=ëÅêÉÉåIn the example above, the B-scan is too high on the screen. If this occurs, use the up anddown arrows next to the scan window or the mouse wheel to center the scan.In this case (Figure 6-24), because light is not passing directly through the center of thepupil, the fundus image quality is reduced.cáÖìêÉ=SJOQ==mççê=cìåÇìë=fã~ÖÉ=nì~äáíó