This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea, Subject name: Ophthalmology
A patient on amiodarone is diagnosed to have cornea verticillata. What should be management: 
Select and explain. 
A. Stop the drug, B. Penetrating keratoplasty, C. Lamellar keratoplasty, D. Observation
A: Stop the drug
Answer: A: Stop the drug 
Explanation: Ans. (a) Stop the drugRef: Parson's 20/e, p. 206; American Academy of Ophthalmologist: Cornea Section 8, p. 2009 - 2010/375; Cornea by Krachner 2/e, p. 365 - 69; Kanski 6/e, p. 321