The role of viruses in the development of ocular tumors.

The role of viruses as a cause of human cancer has been investigated by a variety of techniques in recent years. While no definitive answer exists at present, several lines of evidence indicating a viral role in human tumors and reviewed. These include the well-documented role of viruses in causing animal tumors; evidence for an association of certain viruses with human tumors; and virally induced animal models of human tumors, melanoma, retinoblastoma, and ocular malignant melanoma.