This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inflammations of the Cornea, Subject name: Ophthalmology
Which one of the following drugs is contraindicated in treatment of dendritic corneal ulcer 
Select and explain. 
A. Atropine, B. Cefazolin, C. Acyclovir, D. Dexamethasone
D: Dexamethasone
Answer: D: Dexamethasone 
Explanation: Ans.(d) DexamethasoneRef: A.K. Khurana 6th ed. /108-109* Dendritic ulcer is an irregular linear branching ulcer with knobbed ends and reduced corneal sensations seen in epithelial keratitis* It is caused by herpes simplex infection.* Steroids cause progression of dendritic ulcer, into geographical ulcer so, they are contraindicated.* The treatment is done with 3% acyclovir ointment and mechanical debridement. Other antibiotics may be required if there is a secondary infection.