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
Contact lens is best used in: 
Select and explain. 
A. High myopia, B. Irregular astigmatism, C. Aphakia, D. Regular astigmatism
B: Irregular astigmatism
Answer: B: Irregular astigmatism 
Explanation: Ans. Irregular astigmatism