A 23 year-old white female presented to the emergency department with sudden
visual loss in her left eye. Best-corrected visual acuity was 20/20 in the right eye and
20/400 in the left eye. Fundus examination showed unilateral papillitis, including
optic nerve head edema, optic disc swelling and hemorrhages with a toxoplasma
retinochoroiditis at the upper of the optic nerve head. This uncommon focal active
toxoplasmosis chorioretinitis lesion that appeared to involve the optic nerve as well as
juxtapapillary have been reported only rarely (Rawal Medicine J 2009;34:112-114).
Key words: Optic nerve head, toxoplasmosis, unilateral papillitis.
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