Causes
The cause of non-infectious uveitis is unknown but there are some strong genetic factors that predispose disease onset including HLA-B27 and the PTPN22 genotype.
Recent evidence has pointed to reactivation of Herpes simplex, varicella zoster and other viruses as important causes of developing what was previously described as idiopathic anterior uveitis. Bacterial infection is another significant contributing factor in developing uveitis.
Read more about this topic: Uveitis