Hypertensive choroidopathy in atypical hemolytic-uremic syndrome

Purpose: We present the case of a 22-year-old woman, diagnosed as having atypical hemolytic uremic syndrome with a hypertensive crisis, who presented a bilateral serous retinal detachment. Case Description: A 22-year-old woman, diagnosed as having atypical hemolytic uremic syndrome, was referred for blurred vision in both eyes, evolving over 7 days. Treatment including hemodialysis, plasma exchange, systemic steroids, antihypertensive medications and eculizumab was started 1 month prior to referral. At presentation, best-corrected visual acuity was 20/40 in the right eye and 20/25 in the left eye. Retinal examination revealed bilateral serous retinal detachment in the posterior pole and some small, flat, variably pigmented lesions. Optical coherence tomography confirmed marked serous retinal detachment in both eyes. Fluorescein and indocyanine green angiography was performed. Treatment for systemic hypertension was changed. Seven days later, dilated fundus examination and optical coherence tomography demonstrated a significant regression of the serous retinal detachment. Her visual acuity improves in both eyes at the last control, showing at fundus examination a complete resolution of the exudative detachment but a persistence of variable flat pigmented lesion. Conclusion: Although multiple organ systems are commonly affected in hemolytic uremic syndrome, ocular involvement has only been described in very few cases. Ocular manifestations in atypical hemolytic uremic syndrome include retinal, choroidal and vitreal hemorrhages, retina and/or ischemic signs. Bilateral serous retinal detachment may also be a sign of atypical hemolytic uremic syndrome or even the first manifestation of a hypertensive event.