1st grading 2nd grading Mean Difference (LoA) ICC (95%CI) Cirrus  SL-AOD (μm) 623±271 626±277 -4 (-122/115) 0.977 (0.966-0.984) RTVue SL-AOD (μm) 611±267 606±253 5 (-123/133) 0.970 (0.957-0.979) Cirrus  SL-TISA (mm2) 0.221±0.106 0.223±0.109 -0.002 (-0.060/0.056) 0.964 (0.948-0.975) RTVue SL-TISA (mm2) 0.215±0.112 0.214±0.104 0.001 (-0.062/0.064) 0.957 (0.938-0.970)

Table 2: Intra-observer reproducibility with the Cirrus SD-OCT and the RTVue SD-OCT. Data are presented as mean ± standard deviation. (SL: Schwalbe’s Line, AOD: Angle Opening Distance, TISA: Trabecular-Iris-Space Area, ICC: Intraclass Correlation Coefficient, LoA: Limits of Agreement, CI: Confidence Interval).