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
Marfan's syndrome has which of the following prominent eye defects? 
Select and explain. 
A. Megalocornea, B. Microcornea, C. Microspherophakia, D. Ectopia lentis
D: Ectopia lentis
Answer: D: Ectopia lentis 
Explanation: Marfan's syndrome is characterized by ectopia lentis (superior-temporal) 80% and megalocornea 15% in the eye. Ref: A.K KHURANA (2005), Chapter 8, "Disease of The Lens", In the book, "Opthalmology", 3rd Edition, Newdelhi, Page 210