Abstract
Herpes simplex virus (HSV), cytomegalovirus (CMV) and Epstein-Barr virus (EBV) have been recognized as pathogenic agents of intraocular inflammatory conditions. The ability of the Polymerase Chain Reaction (PCR) technique to amplify HSV, CMV and EBV DNA from aqueous specimens makes this technique a valuable diagnostic tool for the detection of these viral pathogens in patients with ophthalmic lesions. We used PCR for the amplification of a 476 bp long sequence from the pol I gene of HSV genome, a 435 bp region of the immediate early-1 (IE-1) gene of CMV and a 375 bp sequence from the EcoRI B fragment of EBV genome. We examined 22 aqueous humour specimens from patients with uveitis and retinitis, inflammatory eye diseases, diagnosed clinically. We found HSV in 4 (18.2%), CMV in 6 (27.3%) and EBV in 1 (4.5%) out of the 22 examined patients. None of the 22 examined samples was found to be infected with more than one of the examined viral pathogens. These data confirm the implications of the members of Herpesvirus family in inflammatory inner eye diseases and the importance of PCR technique as a diagnostic tool in clinical virology.
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