Inter-visit variability of conjunctival microvascular hemodynamic measurements in healthy and diabetic retinopathy subjects

Figures

• 

  Fig. 1. Example of a conjunctival microvasculature mosaic image in an NC subject showing regions of image sequences (white boxes) for (a) the first and (b) the second visits. Overlapping regions between the 2 visits are shown by similarly colored boxes overlaid on the mosaic image. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

• 

  Fig. 2. Example of conjunctival microvascular images obtained by averaging registered image sequences for a NC subject in (a) the first and (b) the second visit. Vessel segments were numbered automatically, and the detected vessel boundaries were outlined by red lines. Direction of RBC movements is shown by white arrows. Vessel segments 1 to 5 were representing repeated microvasculature between the two visits. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.)

• 

  Fig. 3. Inter-visit variability of conjunctival microvascular D (a) and V (b) using Bland and Altman analysis. Difference against hemodynamic measurements per subject are shown for NC (black circles) and DR (gray diamond) subjects. Mean of differences (solid line) and 95% confidence interval (dashed lines) of NC subjects are also indicated.

• 

  Fig. 4. Inter-visit variability of conjunctival microvascular Q (a), WSR (b) and WSS (c) using Bland and Altman analysis. Difference against hemodynamic measurements per subject are shown for NC (black circles) and DR (gray diamond) subjects. Mean of differences (solid line) and 95% confidence interval (dashed lines) of NC subjects are also indicated.