The authors present the case of a patient with a history of ischemic branch vein occlusion and multimodal imaging of the retinal vasculature by fluorescein angiography (FA) and ultrahigh-speed swept-source optical coherence tomography (SS-OCT) microangiography (SS-OCT laser prototype; 1,050 nm, 100,000 A-scans/second). Multiple images across the macula were acquired (3 × 3 mm cubes in clusters of four repeated B-scans). En face images of the vasculature were generated by implementing an intensity differentiation algorithm. The retinal vasculature as well areas of nonperfusion could be identified precisely at multiple retinal levels. Ultrahigh-speed SS-OCT microangiography provides noninvasive, three-dimensional, high-resolution images of the retinal vasculature including the capillaries.
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