Retinal Vascular Occlusion
Case 5-4. Branch Retinal Vein Occlusion
A 72-year-old man had a longstanding occlusion of the superotemporal branch retinal vein in his left eye. On examination, his visual acuity was 20/40, and dilated ophthalmoscopy (A) showed a foveal cyst with surrounding cystoid macular edema. Laser scars were also identified along the superotemporal arcade. Fluorescein angiography (B) showed hazy hyperfluorescence temporal and superior to the fovea consistent with macular edema, and hypofluorescent areas consistent with previous laser treatment or blood.
A vertical OCT tomogram (C) obtained through fixation delineated a large, optically transparent space in the fovea consistent with an intraretinal cyst. Significant fluid accumulation was seen in the outer retina superior to the fovea. The central macular thickness measured 800 ¡um, A thin, horizontal band anterior to the retina (arrow) was consistent with a small epiretinal membrane.
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