Uveitis of viral origin

Most well-defined viral uveitis cases are due to herpes viruses. Thus, HSV and VZV may cause a chronic anterior uveitis, usually with other characteristic signs. Cytomegalovirus causes a necrotic and haemorrhagic retinitis in immunosuppressed patients. Acute retinal necrosis also seems to be caused by members of the herpes virus family. Many cases of intraocular inflammation have been described in association with viral diseases, but this does not necessarily imply the presence of virus in the eye.