1. Retinal flow density by optical coherence tomography angiography is useful for detection of nonperfused areas in diabetic retinopathy

    Retinal flow density by optical coherence tomography angiography is useful for detection of nonperfused areas in diabetic retinopathy

    Purpose Fluorescein angiography (FA) has been conventionally used for detection of retinal nonperfused area (NPA) in diabetic retinopathy (DR) in spite of its qualitative evaluation. Optical coherence tomography angiography (OCTA) has been recently reported to be useful for the quantification of retinal vascular disorder in DR. In this study, we examined whether retinal flow density (FD) measurement in OCTA was useful for NPA detection in DR. Methods The study included 41 eyes from 29 patients with DR who underwent FA and OCTA. Regions surrounded by arteries or veins were extracted in the OCTA image, and the FDs in each region ...

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