![]() For example, young children present with reduced visual acuity, strabismus, nystagmus, and leukocoria. Ocular symptoms vary according to the age of the subject. 7 – 9 The infection can be congenital or acquired. 4 – 6 Toxoplasmic retinochoroiditis is one of the most common causes of posterior uveitis, especially in young patients. Fluorescein angiography (FA) does not usually contribute significantly to the diagnosis in typical case however, it is helpful in demonstrating associated features such as vasculitis, vascular occlusion, arteriovenous shunt within the retina, retinochoroidal shunts, macular edema and choroidal neovascular membranes, as well as optic nerve and neuroretinal involvement. Magnetic resonance imaging (MRI) scanning typically shows multiple lesions that are isointense with the brain on TI-weighted images and isointense or hyperintense on T2-weighted images. ![]() Intracranial calcification may be seen on computed tomography (CT). Toxoplasmosis produces multifocal lesions in the central nervous system with a predilection for the basal ganglia and the frontal, parietal, and occipital lobes. Toxoplasmic optic neuropathy is rare, characterized by subacute visual loss and optic nerve swelling, at times accompanied by a macular star (neuroretinitis). ![]() ![]() 4 Retinal lesions are usually found adjacent to blood vessels. 1 – 3 Toxoplasmic retinochoroiditis classically presents as a focus of new retinitis adjacent to an old chorioretinal scar. Ocular toxoplasmosis is a common cause of infectious retinochoroiditis worldwide.
0 Comments
Leave a Reply. |