Chorioretinal Lacunae – Page 10 of 40

Although the retinal pigment epithelium (RPE) is only a single layer of cells, it appears as two reflective layers with a dark zone in between on high definition OCT scans. The “inner reflection” has been referred to by some authors as the outer segment-RPE interdigitation (OS/RPE)¹ or Verhoeff’s membrane². The outer reflection is the RPE/Bruch’s membrane complex (RPE/BM).¹ Note the two reflections from the RPE complex are only visible on high definition scans. On lower resolution OCT scans the RPE generally appears as one solid thick band.