In February 2012, the patient complained of decreased visual acuity and blurred vision.Eye examination using tracking laser tomography (Spectralis, Heidelberg EngineeringInc., Germany) revealed a typical presentation of HCMV bilateral retinitis,characterized by focal hemorrhages, exudates in both eyes, and thinning, anddisorganization of the retinal layers (Figure 1).At that time, the pp65 antigenemia test indicated 1 infected cell/2×105leukocytes, and the CD4+ cell count was 8 cells/mm3. The gene discussed is CD4; the disease is retinitis.