This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
Gancyclovir is used intravitreallyfor treatment of? 
Select and explain. 
A. Influenza, B. Rhinovirus, C. HZV, D. CMV retinitis
D: CMV retinitis
Answer: D: CMV retinitis 
Explanation: Ans. is 'd' i.e., CMV retinitis Some drugs which are used intravitreally are :? 1) Bevacizumab : inhibits VEGF action; used in metastatic colorectal cancer; off label use as intravitreous injection to slow progression of neovascular macular degeneration. 2) Foscarnet : CMV retinitis. 3) Gancyclovir : CMV retinitis. 4) Ranibizumab : slow macular degeneration. 5) Pegaptanib : neovascular age related macular degeneration.