This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cornea and sclera, Subject name: Ophthalmology
A 28 year old male complains of glare in both eyes. The cornea shows whorl like opacities of the epithelium. He also gave a history of long term treatment with amiodarone. The most likely diagnosis is - 
Select and explain. 
A. Terrain's marginal degeneration, B. Cornea veicillata, C. Band shaped keratophathy, D. Arcus Juvenalis
B: Cornea veicillata
Answer: B: Cornea veicillata 
Explanation: This is whorl like opacities in the corneal epithelium seen in patients on long term treatment with medication such as amiodarone, chloroquine,phenothiazine and indomethacin.it is also seen in patients with Fabrys disease.The condition is generally asymptomatic, harmless and revesible on stopping the drug . REF:Parsons' Disease of the eye,20th edition,pg no.206.