1. Optical Coherence Tomography-angiography: Comparison of the Foveal Avascular Zone between Diabetic Retinopathy and Normal Subjects

    Optical Coherence Tomography-angiography: Comparison of the Foveal Avascular Zone between Diabetic Retinopathy and Normal Subjects

    Purpose To evaluate the effectiveness of optical coherence tomography angiography (OCTA) in investigating changes in the area of the foveal avascular zone (FAZ) in patients with diabetic retinopathy (DR) and normal subjects. Methods Eighty-five eyes of 50 DR patients and 50 eyes of 25 normal subjects were included. OCTA images of the FAZ were acquired using the split-spectrum amplitude decorrelation angiography algorithm of Optovue Avanti RTVue XR OCT. Patients were divided into three groups according to DR severity: mild-to-moderate non-proliferative diabetic retinopathy (NPDR) group, severe NPDR group, and proliferative DR group. The area of the FAZ was measured using built-in ...

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