“…The rate of occurence is approximately 20–40%, especially in patients whose CD4+ lymphocytes were fewer than 50 cells/µl [2, 3, 4, 5, 6]. If CMV retinitis were left untreated, it could result in progressive retina damage and loss of vision [1, 2, 3, 4, 5, 6]. Several published methods based on polymerase chain reaction (PCR), a method that can rapidly and specifically amplify signals, could quickly identify ocular CMV infection [7, 8, 9, 10, 11].…”