This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Ophthalmology
All of the following are true about Keratoconus, except: 
Select and explain. 
A. Increased curvature of cornea, B. Astigmatism, C. K.F ring cornea, D. Thick cornea
D: Thick cornea
Answer: D: Thick cornea 
Explanation: The main pathological changes in Keratoconus are thinning and ectasia of the lens which occur as a result of defective synthesis of mucopolysaccharide and collagen tissue. REF : AK KHURANA 7TH ed.