This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Conjunctiva, Subject name: Ophthalmology
Parasitic subconjunctival cysts are caused by 
Select and explain. 
A. Toxoplasmosis, B. Cysticercosis, C. Leishmaniasis, D. Chagas disease
B: Cysticercosis
Answer: B: Cysticercosis 
Explanation: Parasitic cysts such as subconjunctival cysticercus, hydatid cyst, and filarial cyst are not infrequent in developing countries. cyst with hooklets on the optic disc has been repoed who also had sub-cutaneous and cerebral involvement. The differential diagnosis of orbital cysticercosis includes idiopathic myositis, tumours or metastasis, muscle abscess or haematoma, and other parasitic infections like hydatid cyst Conjunctival cysts need a careful surgical excision. The excised cyst should always be subjected to histopathological examination. Ref: Khurana; 4th ed; Pg 86