Appendix2660021169012 Rev. A 2017-12 CIRRUS HD-OCT User ManualB-18Table B-16: Repeatability of GCA Parameters Measured – Glaucomatous SubjectsGCA Parameters (μm)RepeatabilityRepeatabilitySDRepeatabilityLimitaCV b%OverallAverage GCL + IPL Thickness 0.6274 1.7567 1.0%Minimum GCL + IPL Thickness 1.5246 4.2689 2.6%Temporal–Superior GCL + IPL Thickness 1.2204 3.4171 1.8%Superior GCL + IPL Thickness 1.2653 3.5429 1.8%Nasal–Superior GCL + IPL Thickness 0.8219 2.3013 1.2%Nasal–Inferior GCL + IPL Thickness 1.1204 3.1371 1.7%Inferior GCL + IPL Thickness 1.0569 2.9593 1.7%Temporal–Inferior GCL + IPL Thickness 1.2160 3.4049 2.0%Mild GlaucomaAverage GCL + IPL Thickness 0.5099 1.4277 0.7%Minimum GCL + IPL Thickness 0.9000 2.5200 1.4%Temporal–Superior GCL + IPL Thickness 0.8062 2.2574 1.2%Superior GCL + IPL Thickness 1.0198 2.8555 1.4%Nasal–Superior GCL + IPL Thickness 0.8367 2.3426 1.1%Nasal–Inferior GCL + IPL Thickness 1.1489 3.2170 1.6%Inferior GCL + IPL Thickness 1.0677 2.9896 1.6%Temporal–Inferior GCL + IPL Thickness 1.0488 2.9367 1.6%Moderate GlaucomaAverage GCL + IPL Thickness 0.7661 2.1352 1.2%Minimum GCL + IPL Thickness 1.1132 3.1169 2.1%Temporal–Superior GCL + IPL Thickness 1.3433 3.7611 2.1%Superior GCL + IPL Thickness 1.8238 5.1065 2.9%Nasal–Superior GCL + IPL Thickness 0.8209 2.2986 1.2%Nasal–Inferior GCL + IPL Thickness 0.8341 2.3354 1.4%Inferior GCL + IPL Thickness 1.1325 3.1711 2.0%Temporal–Inferior GCL + IPL Thickness 0.8723 2.4424 1.5%Severe GlaucomaAverage GCL + IPL Thickness 0.7071 1.9799 1.2%Minimum GCL + IPL Thickness 2.6682 7.4708 5.3%Temporal–Superior GCL + IPL Thickness 1.7728 4.9639 2.9%Superior GCL + IPL Thickness 1.0235 2.8659 1.6%Nasal–Superior GCL + IPL Thickness 0.7868 2.2030 1.2%Nasal–Inferior GCL + IPL Thickness 1.3093 3.6661 2.1%Inferior GCL + IPL Thickness 0.9386 2.6281 1.6%Temporal–Inferior GCL + IPL Thickness 1.7795 4.9826 3.3%a. Repeatability Limit is the upper 95% limit for the difference between repeated results. Per ISO 5725–1 and ISO 5725–6, Repeatability Limit = 2.8 x Repeatability SD.b. CV = Coefficient of variation = SD ÷ Mean.
