Posterior Segment2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User Manual8-36RNFL & ONH Summary ChartRNFL GPA has three different indicators for detecting RNFL change and one indicator fordetecting ONH change, each with a checkbox in the summary:• RNFL Thickness Map Progression (best for focal change)• RNFL Thickness Profiles Progression (best for broader focal change)• Average RNFL Thickness Progression (best for diffuse change)• Average Cup–to–Disc ProgressionThe summary box reports progressive change as one of “Possible Loss” (yellow), “LikelyLoss” (red), or “Possible Increase” (lavender). “Possible Loss” means progressive loss hasbeen detected once. “Likely Loss” means it has been confirmed by consecutive follow–upexaminations. Shown below are examples of summary box displays.The yellow checkmarks in the RNFL Thickness Map Progression and RNFL Thickness ProfilesProgression summary boxes above show “Possible Loss”.The red checkmark in the RNFL Thickness Map Progression summary boxes above shows“Likely Loss”.The lavender checkmark in the RNFL Thickness Map Progression summary box above shows“Possible Increase”.
