Figure 14

OCTA of BRVO and CRVO. (A) The left eye of a 61 year old Asian woman with a chronic branch retinal vein occlusion using the Angiovue optical coherence tomography angiography (OCTA) software of the RTVue XR Avanti (Optovue, Inc., Fremont, CA). (A1) Full-thickness (internal limiting membrane to Bruch’s membrane) 3 x 3 mm OCT angiogram showing capillary non-perfusion superotemporal extending into the foveal avascular zone (FAZ) and telangiectatic vessels at the border of the ischemic areas. (A2) Full-thickness 6 x 6 mm OCT angiogram demonstrating that the capillary non-perfusion is along the superior arcade. The edges of the ischemia are bordered by telangiectatic vessels, capillary loops, and possible microaneurysms. (A3) En-face structural OCT with a retinal thickness map and a red line corresponding to the highly-sampled OCT b-scan in A4. (A4) 12 mm highly sampled OCT b-scan through the fovea which appears relatively unaffected. (A5) Retinal thickness map demonstrating superior thickening due to edema. (B) The left eye of a 72 year old Caucasian man with a chronic central retinal vein occlusion using the Angiovue OCTA software of the RTVue XR Avanti (Optovue, Inc., Fremont, CA). (B1) Full-thickness 3 x 3 mm OCT angiogram showing diffuse capillary non-perfusion continuous with the FAZ and telangiectatic vessels. (B2) Full-thickness 6 x 6 mm OCT angiogram demonstrating telangiectatic vessels and diffuse capillary non-perfusion especially along the inferior arcade. (B3) En-face structural OCT with a retinal thickness map and a red line corresponding to the highly-sampled OCT b-scan in B4. (B4) 12 mm highly sampled OCT b-scan through the fovea which shows macular edema and disruption of the photoreceptor layer. (B5) Retinal thickness map demonstrating thickening that is greatest inferiorly.