The distance between the inner and outer line of the linear artifact was 63.18 ± 5.52 μm, and the height from the ellipsoid zone to RPE/Bruch’s complex was 81.30 ± 5.65 μm. The linear artifact was like a miniature copy from the ellipsoid zone to the RPE/Bruch’s complex, and the reduction ratio was approximately 1:1.3 (Fig. 2). The rate of sclerochoroidal interface above, below or at the same level as the linear artifact line was 67.1%, 7.4% and 7.4%, respectively (Table 3).Figure 2The linear artifact and corresponding retinal structures in EDI-OCT. The ellipsoid zone, the outer segments of photoreceptors, the interdigitation zone and RPE/Bruch’s complex corresponded to the four zones of linear artifact, respectively. Table 3Rate of linear artifact line above, below or at the same level as the sclerochoroidal interface.APACGPACSCPACGPOAGCSCControlTotalBelow10 (43.5%)14 (58.3%)19 (59.4%)24 (96%)14 (56%)19 (95%)100 (67.1%)At the same level1 (4.3%)2 (8.3%)3 (9.4%)0 (%)4 (16%)1 (5%)11 (7.4%)Above1 (4.3%)2 (8.3%)1 (3.1%)0 (%)7 (28%)0 (0%)11 (7.4%)Not observed11 (47.8%)6 (25%)9 (28.1%)1 (4%)0 (0%)0 (0%)27 (18.1%)