Abstract
Presentation Description :
OCT angiography allows the macular circulation to be visualized in a depth-resolved fashion and at higher resolution. This allows the foveal avascular zone (FAZ) and the parafoveal capillary network to be more precisely defined, and defined at multiple retinal levels. Using swept source OCT microangiography, we were able to evaluate the parafoveal retinal circulation in a cohort of normal eyes, and quantify the FAZ and the parafoveal capillary density for both the superficial and deep capillary plexi separately. We observed that the deep FAZ was significantly larger (diameter of 0.486±0.162) compared with the superficial FAZ (0.304±0.132), with a greater capillary density in the superficial layer.
Assessment of the normal circulation is particularly important in order to better understand the significance of possible capilary non-perfusion in the setting of retinal disease.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.