Peripapillary Retinal Thickness Maps in the Evaluation of Glaucoma Patients: A Novel Concept

Figure 1

Example of a spectral domain optical coherence tomography (SDOCT) frame that depicts the three boundaries that were automatically determined by our algorithm: (1) top surface of the retina, (2) the posterior retinal nerve fiber layer (RNFL), and (3) the posterior retinal pigment epithelium (RPE). The algorithm sequentially finds the top surface of the retina, the posterior RPE boundary, and then the posterior RNFL boundary. The depth difference between the top surface and the posterior RNFL boundary gives the RNFL thickness while the difference between the top surface and the posterior RPE boundary gives the retinal thickness (RT). The lateral dimension of this frame is 5.81 mm with a scan depth of 1.85 mm. The image was expanded vertically by 2 for better visualization.