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G. C. Heringer, A. Faria, Jr., W. R. Campos, F. Orefice; Reactivations of Ocular Toxoplasmosis After Pars Plana Vitrectomy. Invest. Ophthalmol. Vis. Sci. 2007;48(13):336.
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To determine the risk of reactivation of ocular toxoplasmosis following pars plana vitrectomy
Retrospective review of the medical records of 54 patients with ocular toxoplasmosis and pars plana vitrectomy.All patients were submitted to surgery because vitreoretinal complications of ocular toxoplasmosis,like retinal detachment,vitreous opacities and hemorrhage,and epiretinal membrane.They were followed for at least 6 months.The presence of risk factors such as sex,age,characteristics of the lesion,the presence of severe vitreitis during last attack of ocular toxoplasmosis,previous surgery,the intervals between surgery and first clinical manifestation of ocular toxoplasmosis and between surgery and the last recurrence of ocular toxoplasmosis, as well as the use of antiparasitic medication and corticosteroid before surgery, type and complications of surgery,anatomical result and optimal visual acuity before and after vitreoretinal surgery.
Four patient (7,4%) they had active episode of retinochoroiditis after the accomplished surgery and the time elapsed between the surgery and the reactivation varied from 3 to 17 months, with average of 11,75.Three patients had vitreoretinal surgery for epiretinal membrane and one for vitreous opacities.The final visual acuity got better in three patients and the one who didn't got macular hole.No additional risk factors for the development of recurrences of ocular toxoplasmosis after vitreoretinal surgery were found.
It's possible to occur reactivation of ocular toxoplasmosis following pars plana vitrectomy and this is the first report on it.
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