· Careful clinical observations.
· Serology: CD4 count (usually <50 in untreated cases of CMV retinitis).
· Retinal biopsy by pars plana vitrectomy.
· Fluorescein angiography: helpful in differentiating retinal lesions.
· Sequential fundus photographs: for diagnosis and monitoring of lesions.
· Testing of
ocular fluid by polymerase chain reaction.