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
All of the following clinical signs seen in Keratoconus except: 
Select and explain. 
A. Fleischer ring, B. Rizutti sign, C. Haab's striae, D. Oil droplet reflex
C: Haab's striae
Answer: C: Haab's striae 
Explanation: Haab's striae seen in primary congenital glaucoma.
Keratoconus

Oil droplet reflex seen in direct ophthalmoscopy.
Rizutti sign - Light thrown temporarily falls in arrow head pattern on nasal limbus.
Fleischer ring - Iron deposition at the base of cone.