Vascular Length Density and Vessel Density in the Foveal Avascular Zone Dysplasia -Imaging of the Foveal Avascular Zone Dysplasia

Aim:To report the vascular length density and vessel density anomalies in foveal avascular zone dysplasia.Methods: A case of foveal avascular zone dysplasia was observed by color fundus photography, fundus autofluorescence, vessel density, vascular length density and swept source optical coherence tomography (SS-OCT), etc. Results:The macula of both eyes exhibited the incomplete or absent foveal avascular zone.The color fundus photography revealed a diminishment in the foveal light reflex, the fundus autofluorescence findings were within normal limits, both eyes exhibited a band-like high reflection on the temporal side of the fovea in both eyes by SS-OCT.The central foveal thickness and the subfoveal choroidal thickness of foveal avascular zone dysplasia increased.In the central area (1 mm circle) of the macula, the vessel density of the superficial capillary plexus was determined to be 19% in the right eye and 43% in the left eye, whereas in the deep capillary plexus, it was observed to be 25% in the right eye and 40% in the left eye.The vascular length density was measured at 11.2/mm in the right eye and 27.1/mm in the left eye. Conclusion:The central foveal thickness and subfoveal choroidal thickness exhibited an increase in cases of foveal avascular zone dysplasia.The vascular length density and vessel density are valuable evaluation indexes.