This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Amsler sign - 
Select and explain. 
A. Fuch heterochromatic iridocyclitis, B. Posner-schlossman syndrome, C. Uveal-effusion syndrome, D. None of the above
A: Fuch heterochromatic iridocyclitis
Answer: A: Fuch heterochromatic iridocyclitis 
Explanation: (Ref: Yanoff & Ducker 3rd/e p.865) During paracentesis in Fuch's heterochromic iridocyclitis, there is bleeding from neo-vasculorizarion. This is known as "Amsler's sign".