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We report three cases of optic nerve toxoplasmosis, an unusual form of ocular toxoplasmosis. In one patient, the optic nerve involvement occurred in an eye with a toxoplasmic chorioretinal scar and choroidal neovascularization in the supramacular area, subretinal fibrosis, and pigment epithelium detachment. The other two patients had papilledema without healed or active chorioretinal lesions, but both had retinal hemorrhage and macular involvement. The diagnosis was based on clinical examination and elevated serum toxoplasma antibodies. Optical coherence tomography helped uncover the structural chorioretinal changes. All patients were treated with a combination of oral antitoxoplasmic drugs, oral prednisone, and intravitreal injection of bevacizumab. Visual acuity improved in all of them. Optic nerve involvement in ocular toxoplasmosis must be considered when papilledema occurs both in isolation and/or in the presence of an active or scarred chorioretinal lesion.

Neuroretinitis and Juxtapapillary Retinochoroiditis as Atypical Presentations of Ocular Toxoplasmosis