Ocular Manifestations of Granulomatosis With Polyangiitis.

The current state of knowledge on ANCA-associated vasculitis (AAV) indicates that it is a group of autoimmune diseases in which small blood vessels in various organs are affected. Disease entities included in this group are granulomatosis with polyangiitis (GPA), microscopic polyangiitis (MPA), and eosinophilic granulomatosis with polyangiitis (EGPA, Churg-Strauss syndrome). These are rare diseases, with an incidence in Europe of approximately 20-25 cases per million people per year. There is a slight predominance among men, and the risk of developing the disease increases with age. ANCA antibodies play a role in the pathogenesis of the disease, and inflammation within small vessels leads to damage of the vessel walls, resulting either in rupture or occlusion of the vessel lumen. Consequently, vital organs such as the kidneys, lungs, heart, nervous system, upper respiratory tract, gastrointestinal tract, and eyes may be affected. If the disease is not diagnosed, untreated, or treated improperly, it can lead to irreversible failure of these organs and even death. Despite appropriate treatment, AAV diseases tend to relapse; therefore, therapy consists of two phases: induction therapy and maintenance therapy. Current EULAR/EDTA guidelines for induction treatment of AAV recommend the use of cyclophosphamide (CYC) or rituximab (RTX) in combination with glucocorticosteroids in cases of severe disease. If remission is achieved after induction therapy, maintenance treatment shoul…

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