Changes in corneal nerve morphology and function in patients with dry eyes having type 2 diabetes

Figure 1 In vivo confocal microscopy of corneal sub-basal nerves of four representative patients. A: A dry eye patient with diabetes; B: A dry eye patient without diabetes; C: A diabetes patient without dry eye; D: A control subject. The size of each image is 400 μm × 400 μm.

Figure 2 Nerve fiber length was also associated with diabetes duration. A: Correlation between R1 Latency and the Schirmer I score; B: Correlation between nerve fiber length and diabetes duration time; C: Correlation between R1 Latency and diabetes duration time. NFL: Nerve fiber length. DM: Diabetes mellitus.