CMV retinitis
Cytomegalovirus (CMV) retinitis is a viral inflammation of the retina of the eye.
CMV retinitis is caused by a member of a group of herpes-type viruses. CMV is very common. Most adults have antibodies to CMV in their blood (indicating they have been infected) by age 40. Usually, CMV produces no symptoms. However, serious CMV infections can occur in people who have weakened immune systems due to: