Certified Ophthalmic Medical Technologist (COMT) Practice Exam

How does toxoplasmosis typically affect vision?

1. Causing optic nerve atrophy

2. Inducing retinal necrosis

3. Leading to chorioretinitis

4. Triggering glaucoma

The correct answer is: Leading to chorioretinitis

Toxoplasmosis primarily affects vision by leading to chorioretinitis, which is an inflammation of the choroid and retina. This condition results from the infection caused by the Toxoplasma gondii parasite, often acquired from contaminated food, water, or exposure to cat feces. The inflammation can lead to a variety of visual disturbances, including blurred vision, floaters, and in severe cases, scarring of the retina which may result in significant vision loss. Chorioretinitis is particularly associated with the characteristic lesions seen in the retina that can be identified during a comprehensive eye examination. These lesions are often described as "pizza pie" lesions due to their appearance. In contrast, the other options relate to different ocular conditions or complications that are not the primary manifestations of toxoplasmosis.