<prompt> Most common eye pathology in toxoplasma infection is: March 2009Corneal ulcerRetinochoroiditisUveitisCataract  <response>: Ans. B: Retinochoroiditis Intraocular features of toxoplasmosis infections are: Macular scarring Retinochoroiditis Vitritis When human retinal pigment epithelium RPE cells are infected with Toxoplasma gondii, there is an increased production of several cytokines including interleukin 1beta IL-18, interleukin 6 IL-6, granulocyte-macrophage colony-stimulating factor GM-CSF, and intercellular adhesion molecule ICAM. Patients with acquired toxoplasmic retinochoroiditis exhibit higher levels of IL-1 than asymptomatic patients. IL-10 polymorphisms associated with a low production of IL-10 also appear to be associated with the occurrence of toxoplasmic retinochoroiditis. Toxoplasma parasites are rarely identified in aqueous humor samples from patients with active ocular toxoplasmosis. 