Retinal Capillary Nonperfusion on OCT-Angiography and Its Relationship to Kidney Function in Patients with Diabetes

Figure 1

Optical coherence tomography angiography (OCTA) measurements and scanning protocol. Flowchart showing OCTA measurements and scanning protocol. (a) Four 12 mm × 12 mm scans were used to complete a wide field of view (FOV) image for each participant, (b) the original wide FOV image of retinal blood flow, (c) the nonvessel map, (d) the nonperfusion area map, and (e) the quantification results map; green: nonperfusion area in 30° FOV quantification region and purple: nonperfusion area in 60° FOV quantification region.