A 28-year-old patient with history of Pneumocystis carinii pneumonia, complains of blurred vision and floaters in the left eye. His VA is 20/20 OD and 20/400 OS. Anterior chamber examination shows trace cell and flare in the left eye. Dilated retinal examination is significant for an area of retinal infarction intermixed with hemorrhages, extending from temporal periphery to the posterior pole. Upon further work up, the patient’s CD4 count was found to be 43 cells/mm3 . This type of retinitis:
is the most common ocular infection in patients who have AIDS.
results in blindness if untreated.
rarely occurs, except in immunocompromised patients.
incidence decreases as the CD4 circulating lymphocyte count declines.
Answer:D. incidence decreases as the CD4 circulating lymphocyte count declines.
Explanation: The risk and the incidence of CMV retinitis rise as CD4 count decreases, especially to the levels below 50 cells/mm3 .