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
Most uncommon type of latent strabismus is: 
Select and explain. 
A. Esophoria, B. Exophoria, C. Hyperphoria, D. Cyclophoria
D: Cyclophoria
Answer: D: Cyclophoria 
Explanation: Ans. Cyclophoria