This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Ophthalmology
Which drug can cause macular toxicity when given intravitreally ? 
Select and explain. 
A. Gentamicin, B. Vancomycin, C. Dexamethasone, D. Ceftazidime
A: Gentamicin
Answer: A: Gentamicin 
Explanation: Gentamycin causes macular infarction (retinotoxic). Preferably the aminoglycosides should be avoided intravitreally. Ref : Khurana page no. 169