This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Ophthalmology
Commonest infection causing blindness in adult man - 
Select and explain. 
A. Toxocara, B. Plasmodium, C. Toxoplasma gondii, D. Tenia solium
C: Toxoplasma gondii
Answer: C: Toxoplasma gondii 
Explanation: Amongst the given options, only toxoplasmosis is a common cause of blindness.
"Toxoplasma infection is one of the most common latent infections of humans throughout the world".
"Almost all untreated congenially infected individuals will develop chorioretinal lesions by adulthood and about 50% will have severe visual impairment".