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Receiver operating characteristic curves for the rod (blue), cone (green), melanopsin (red), and combined PLR (black). The proportion of the IIH patients classified as abnormal (sensitivity) is plotted as a function of the proportion of the controls classified as abnormal (1-specificity; false positives). The PLR cutoff values, sensitivity, specificity, AUC, SE, and corresponding P value are given in the Table.
