There are four possible causes of iridocyclitis, also called anterior uveitis: 1. Infectious factors, which are divided into two types of infection, one endogenous and one exogenous. Endogenous may be infected bacteria, fungi, viruses, parasites, etc., which cause iridocyclitis through the occurrence of antigenic antibody reactions. The first of these is the development of a new type of iridocyclitis. 2. autoimmune factors, various causes of autoimmune dysfunction, can lead to an immune response to its own antigens, thus causing the development of iridocyclitis. 3. trauma and physical and chemical injury, such as inflammation due to trauma and trauma, can also lead to the development of iridocyclitis. 4. genetic factors. There are many cases of iridocyclitis that are genetically related, such as ankylosing spondylitis with iridocyclitis and Harada-Koyasu syndrome, which are associated with genetic occurrence.