The RNFL and RGC+ probability maps predicted by the schematic model for 3 hypothetical IVZ defects that are relatively narrow, but deep. (A) A cpRNFL thickness plot as in Fig. 1C and 2C showing the location of 3 hypothetical defects (black, blue and green regions). (B)(C)(D) The predicted RNFL probability maps for the 3 defects. (E)(F)(G) The predicted RGC+ probability maps for the 3 defects. In panels (B–G), green and red indicate within normal limits and significantly abnormal, respectively, while yellow indicates a thinned RGC+ region that may or may not be obvious on the RGC+ plot as the RGC+ layer outside the macula (black circle) is relatively thin, even when healthy.