Fig. 1
From: Retinal vessel tortuosity as a prognostic marker for disease severity in Fabry disease
The automatic quantification of the retinal vessel tortuosity index with help of the MONA REVA software is displayed. A The optic nerve head and the fovea were marked in the images by an inner and outer circle. B The circle was centralized around the fovea. C A zone between 1.5 and 5 times the radius of the optic disc, as indicated by the yellow circles, was generated automatically by the software. In this area all vessels > 100 µm were measured automatically