###Rationale: Cytomegalovirus (CMV) retinitis is a sight-threatening disease associated with AIDS (acquired immune deficiency syndrome) -- a serious disease of the immune system caused by infection with HIV (human immunodeficiency virus). In the past, about a quaer of active AIDS patients developed CMV retinitis. Ref ananthnarayana and panikers microbiology textbook 8/e

###Answer: OPTION A IS CORRECT.
###Question: Which is the most common oppounistic retinal infection associated with HIV
###Options:
A. CMV retinitis
B. VZV
C. Syphilictic retinitis
D. Herpes simplex
