Evaluation of Microcirculation in Optic Nerve Head Using Laser Speckle Flowgraphy in Active Thyroid Eye Disease

Figure 1

Analysis of pulse waveforms for the optic nerve head (ONH) using laser speckle flowgraphy (LSFG). (a) A representative color-coded composite map was used to record the mean blur rate (MBR). Red represents high MBR, and blue represents low MBR. (b) MBR was calculated by placing a rubber band around the ONH. The segmentation of the vessel area (black area) and tissue area (white area) of the ONH is shown in binary format. (c) A pulse waveform of MBR for one cardiac cycle.

(a)

(b)

(c)