Pigmented congenital vitreous cyst in a patient with positive Echinococcus serology

Published:February 21, 2022DOI:
      An asymptomatic 19-year-old female presented with an incidental vitreous cyst noted on an eye examination by her optometrist. Her visual acuity was 20/20–1 OD and 20/25 OS. Her intraocular pressures were 19 mm Hg OD and 16 mm Hg OS. Posterior segment examination was normal except for a 1.5-disc-diameter round pigmented translucent lesion floating in the vitreous (Fig. 1; Video 1, available online). The patient endorsed a persistent floater since childhood and had grown up on a farm. Her bloodwork revealed eosinophilia and positive Echinococcus serology. However, ultimately, a diagnosis of a unilateral pigmented congenital vitreous cyst was made.
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