(A) Cross-sectional Cirrus HD-OCT (Carl Zeiss Meditec, Inc., Dublin, CA) image of the normal macula. (B) An enlargement of the image demonstrates the ability to visualize intraretinal layers that can be correlated with intraretinal anatomy: nerve fiber layer (NFL), ganglion cell layer (GCL), inner plexiform layer (IPL), inner nuclear layer (INL), outer plexiform layer (OPL), outer nuclear layer (ONL), external limiting membrane (ELM), junction of inner and outer photoreceptor segments (IS/OS), retinal pigment epithelium (RPE), and Bruch's membrane (BM).